189 results about "Turbomachinery" patented technology

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 present disclosure provides a kind of blade for inhibiting the blade of leakage vortex break, blade assembly, impeller machinery and blade shaping method.The blade profile is defined according to the cross section profile of the height direction accumulation, the cross section profile has the ratio of the height of the cross section profile and the total height of the blade, the dimensionless blade height H=1 is the blade tip, the dimensionless blade height H=0 is the blade root;The cross section profile also has the back bending angle δ;At the dimensionless blade height H=1, the back bending angle δ=13 °, and has the tolerance range of the numerical ratio ±20%.

The invention relates to the technical field of bearings, and provides a thrust bearing and turbomachinery. The thrust bearing comprises a fixing ring which is used for being arranged at an interval with the thrust disc in the axial direction; the multiple thrust pads are arranged in the circumferential direction of the thrust disc at intervals and located between the fixing ring and the thrust disc, gaps are formed between the thrust pads and the thrust disc, and the gaps are filled with continuous oil films; the multiple first level blocks are arranged at intervals in the circumferential direction of the fixing ring, and the contact surfaces of the first level blocks and the fixing ring are first spherical surfaces; the multiple second level blocks are arranged between every two adjacent first level blocks and one thrust pad, each second level block is provided with a plane structure facing the thrust pad and a double-spherical-surface structure facing the fixing ring, and each double-spherical-surface structure comprises two second spherical surfaces distributed at intervals; and the two second spherical surfaces are respectively in contact fit with the two adjacent first level blocks. Point contact matching between a spherical surface and a plane is adopted, so that swinging of the level block and the thrust pad is more flexible, and the self-balancing effect is better.

The application discloses a kind of intelligent water power fertilization equipment, it is related to agricultural machinery technical field, the end of the connecting pipe away from pipe component is fixedly connected with fertilizer liquid barrel, the side of the connecting pipe is fixedly connected with flowmeter, the side of the pipe component is fixedly connected with water inlet component, the side of the water inlet component is fixedly connected with first electric valve, the present application is provided with turbine mechanism, when water flow impacts turbine blade, so that turbine blade rotates on bracket, so that the water of mixed fertilizer in main pipe is fully mixed, when turbine blade rotates, by the action of centrifugal force, so that cleaning plate rotates on sliding rod by sliding block, so that when turbine blade rotates, the side of turbine blade can be cleaned by scraper, and after the side of turbine blade is cleaned by scraper, the side of cleaned turbine blade can be cleaned and wiped by cleaning roller.

The present disclosure relates to a hydrogen leakage recovery system (1), the system (1) comprising: at least one turbomachinery unit (11); and a recovery unit (12) fluidically coupled with said at least one turbomachinery unit (11), the recovery unit (12) comprising: a separator (121) configured to receive a mixture of hydrogen and other compounds leaked from the turbomachinery unit (11), and to separate the hydrogen from the other compounds so as to obtain a hydrogen stream, and a compressor (123) fluidically coupled with the separator (121), the compressor (123) being configured to receive the hydrogen stream from the separator (121) and to compress the hydrogen stream so as to obtain a compressed hydrogen stream.

Each turbomachine (1, 100) comprises an output shaft (3, 103), an input shaft (5, 105), and a reduction gear, one (104) of which is an epicyclic gear and the other (4) a planetary gear. Each reduction gear has a sun gear (15, 115), a ring gear (13, 113), a planet carrier (16, 116), bearings (22, 122) mounted on said planet carrier, and two-stage planets (14, 114) rotatably mounted on said bearings, with their first stage (18, 118) meshing with the sun gear and their second stage (19, 119) meshing with the ring gear. The planet carriers (16, 116) are identical. (See Figure 2 for abbreviations.)

The invention discloses a turbine blade flutter evaluation method adopting a single-channel harmonic balance model. The method comprises the following steps: 1, carrying out structural grid division on a turbine blade to obtain a vibration mode, a vibration frequency and a vibration pitch diameter of a vibration blade; 2, performing fluid grid division on the turbine blade to obtain grid coordinates under a cylindrical coordinate system; 3, aligning the coordinates of the structural grid and the fluid grid to obtain a vibration mode of the fluid grid; 4, adopting a Doppler frequency shift effect to obtain blade vibration frequencies, vibration pitch diameters and inter-blade phase angles of other blade rows except the blade row where the vibration blades are located; 5, realizing mutual transmission of upstream information and downstream information of the rotor-stator interface; 6, single-channel unsteady harmonic balance analysis is achieved; and step 7, evaluating the stability of the turbine blade flutter system. According to the method, the flutter of the multiple rows of turbine blades is evaluated, and the method has the characteristics of low calculation cost and high evaluation accuracy.

Graphene-based sliding varnish and its use in turbomachinery manufacturing. The present invention relates to a sliding varnish formulation comprising a water-based carrier suspension, an inorganic binder, and graphene. This varnish formulation is used to protect turbomachine parts from contact wear in assemblies, particularly in the blades of the hot section of a reactor. Figure for the abstract: Fig. 3

The present invention provides a blade, a processing system, a processing method, a turbine blade, and a turbomachinery. The blade (BL) is a blade used in fluid and includes: a substrate (BM) and a coating layer (TBC) formed on the substrate. On the surface of the coating layer, a plurality of first grooves (9) and a plurality of second grooves (7) are formed, and the spacing (P9) of the plurality of first grooves is different from the spacing (P7) of the plurality of second grooves.

A supersonic diffuser for use in turbomachinery adapted to impart thermal energy to a process fluid is provided. The diffuser includes a vaned zone configured to define a passageway having a flow area to pass a flow of a process fluid at supersonic velocity. The vaned zone is configured to define a step-change to the flow area of the passageway at a given location, such as where the flow of the process fluid exits the vaned zone. The diffuser further includes a shock zone coupled to the vaned zone to pass the flow of the process fluid that exits the vaned zone. The shock zone is configured to support a system of shock waves that increases static temperature of the process fluid downstream of the system of shock waves. A mixing and subsonic diffusion is configured to decelerate process fluid from the shock zone to a reduced subsonic speed prior to discharge of the process fluid through an exit of the diffuser.

This application provides a blade manufacturing method, apparatus, electronic device, and storage medium, relating to the field of reverse engineering technology for turbomachinery. The method includes: acquiring multi-point cloud data of multiple blades of the same specification and marking the multi-point cloud data; interpolating, filtering, and fusing the marked multi-point cloud data to obtain blade fused point cloud data; establishing a reverse design model for multiple blades based on the blade fused point cloud data; determining the deviation between the blade output data of the reverse design model and the blade fused point cloud data; and manufacturing multiple blades using the blade output data when the deviation is within a preset deviation range. This application, by constructing multi-point cloud fused data for blades, completes the reverse design of blades and the verification and comparison with the multi-point cloud data of blades, reducing the impact of initial blade manufacturing errors on reverse design and improving the efficiency and accuracy of blade reverse design.

The invention provides a bidirectional self-locking speed governor for an elevator. The bidirectional self-locking speed governor comprises a box body, a centrifugal clutch mechanism and a worm and turbine transmission mechanism, wherein the centrifugal clutch mechanism and the worm and turbine transmission mechanism are arranged in the box body; the toothed guide rail is meshed with a driving gear in the centrifugal clutch mechanism, so that the synchronous movement of the bidirectional self-locking speed limiter for the elevator and the elevator car is realized; the standby and starting work of the two-way self-locking speed limiter for the elevator is achieved through separation and combination of the centrifugal clutch mechanism. When the elevator stalls, the centrifugal part is thrown out of the limiting ejector block clamping the driven shell under the action of centrifugal force, the worm and turbine transmission mechanism connected with the driven shell is driven, and meanwhile the worm and turbine transmission mechanism is driven to achieve work of the elevator two-way self-locking speed limiter. The worm and turbine mechanism can be automatically locked in the working process; after working, the bidirectional self-locking speed limiter for the elevator can be reset by prying a driven shell of a centrifugal clutch mechanism through a turning gear or a tool; the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe are connected, and the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe and external components form a complete elevator system; when the elevator is lifted or falls and stalls, the bidirectional self-locking speed limiter for the elevator automatically drives the brake rod assembly, and the brake rod assembly jacks up the brake shoes in the bidirectional safety tongs to clamp the guide rails to achieve the braking effect.

The application provides a method for determining the structural temperature field and thermal deformation of a compressor rotating disc cavity, which can be applied to the technical field of heat analysis of turbomachinery. The method comprises the following steps: obtaining the geometric parameters, operating parameters and working substance property parameters of the gas in the disc cavity; based on the balance between the buoyancy effect and the viscous effect driven by the centrifugal force, the average heat flux density of the outer ring cover of the disc cavity is obtained according to the outer ring cover radius, the axial gap of the disc cavity, the rotating disc speed, the outer ring cover temperature, the rotating core zone temperature, the Prandtl number, the density, the dynamic viscosity and the thermal conductivity; based on the heat conduction analogy relationship of the laminar Ekman boundary layer, the local heat flux density of the rotating disc is obtained according to the rotating disc speed, the kinematic viscosity, the thermal conductivity and the difference between the rotating disc temperature and the rotating core zone temperature; and the structural temperature field distribution and the thermal deformation of the rotating disc cavity are obtained according to the average heat flux density of the outer ring cover of the disc cavity and the local heat flux density of the rotating disc.

The utility model relates to the technical field of hydroelectric generation, and particularly discloses a pipeline type low-water-head hydroelectric generation turbine system which comprises a guide pipe installed in a pipeline, and a pipeline turbine chamber is formed in the guide pipe. The power generation mechanism is mounted in the pipeline turbine chamber, and the turbine mechanism comprises a spherical turbine and a rotating main shaft; the speed increasing device is used for being connected with a generator or generating electricity to increase the rotating speed of the turbine so as to be matched with the generator; the generator or the speed increasing device is in transmission connection with the transmission part of the rotating main shaft; the guide pipe is installed in an existing water supply pipeline, and then a transmission part in the turbine mechanism is connected with a generator or a speed increasing device. When water in the pipeline turbine chamber flows, the spherical turbine can be driven to rotate around the rotating main shaft vertical to the incoming flow direction under the effect of incoming flow, and therefore pressure potential energy of an incoming flow medium is converted into rotating kinetic energy of a generator rotor through the turbine mechanism to generate electricity.

The invention discloses an expansion machine impeller life prediction method based on a variable fidelity agent model, and belongs to the field of turbomachinery life analysis. The method comprises the following steps: establishing a three-dimensional model of a fluid domain and a solid domain according to structural characteristic parameters of a target turbo expander, and after grid division and boundary condition configuration, acquiring flow field data through steady-state simulation of the fluid domain and verifying the accuracy. The maximum stress amplitude is extracted by combining bidirectional heat-fluid-solid coupling transient simulation, and an improved load spectrum is constructed; sampling design is carried out on impeller shape parameters and operation condition parameters, sample point sets are divided according to the high-precision and low-precision simulation time consumption ratio, high-precision and low-precision life data are generated through two-way coupling simulation and steady-state flow one-way coupling simulation, and a data set with a fidelity label is formed. And training the proxy model by using a variable fidelity machine learning algorithm to realize life prediction. According to the method, the calculation cost is remarkably reduced through a high-low precision simulation hybrid strategy, and an efficient solution is provided for impeller service life evaluation and optimization design.

The invention discloses a synchronous dynamic measurement method for a surface boundary layer and an interstage flow field of an aero-engine rotor blade, and belongs to the technical field of mechanical testing of aero-engine / gas turbine impellers. According to the method, fluid-solid coupling numerical simulation is carried out on a to-be-tested rotor system under a given rotating speed and a given working condition, and arrangement positions and installation postures of a surface hot film, a hot wire probe or a dynamic probe and a strain gauge are determined; a synchronous measurement system composed of a surface hot film measurement channel, a hot wire / dynamic probe measurement channel, a strain gauge measurement channel, a synchronous phase locking device, a high-fidelity slip ring and a multi-channel data acquisition system is constructed; and synchronous dynamic measurement and conjoint analysis of a blade surface boundary layer, an interstage flow field and a blade vibration signal are realized. According to the method, high-precision three-field coupling data can be obtained, and a reliable basis is provided for fluid-structure interaction mechanism research and aeroelasticity and fatigue life design of a high-load aero-engine.

Generally disclosed are rotor thrust balancing systems for turbomachinery and methods of using the same. For example, a rotor thrust balancing system for turbomachinery, where the turbomachinery defines a centerline extending a length of the turbomachinery. The system includes a rotating drive shaft, a thrust bearing, and a first waveguide sensor. The rotating drive shaft couples a turbine section and a compressor section of the turbomachinery. The thrust bearing supports the rotating drive shaft of the turbomachinery. The thrust bearing includes a plurality of ball bearings, an inner race coupled to the rotating drive shaft, and an outer race coupled to a fixed structure. The first waveguide sensor is coupled to the outer race at a first end of the waveguide sensor. The waveguide sensor transmits a vibration frequency from the thrust bearing to a second end of the waveguide sensor.

The present disclosure belongs to the field of turbomachinery, and more specifically, it relates to a sealing strip (1) for sealing the junction of a circumferential groove (2.1) of a rotor (2) with a circumferential root (3.1) of a blade (3).

A device (40) for cooling a turbomachine annular casing (46) having a longitudinal axis X comprises a gas collection housing (42) and a cooling wire set (52) extending circumferentially about the longitudinal axis. The wire set is connected to the gas collection housing such that an interior volume of the gas collection housing is in fluid communication with an interior volume of the wire set. The wire set comprises injection holes (57) which are open radially inward towards the cartridge receiver (46). The gas collection housing comprises a radially inner surface (42b) having an opening (50) intended to be arranged radially opposite the cartridge receiver (46). The opening allows fluid communication between the interior volume of the gas collection housing and the interior volume of the wire set. The cooling device also includes a joint (58) having a generally V-shaped radial cross-section, the apex of which is oriented radially outward.

Turbomachine arrangement (10) comprising an electric machine (19) having a shaft (20), at least one compressor section (12a, 12b) for increasing the pressure of a working medium, wherein each compressor section (12a, 12b) has a compressor shaft (13a, 13b), and / or at least one expander section for expanding the working medium, wherein each expander section has an expander shaft, wherein the electric machine (19), the at least one compressor section (12a, 12b) and / or the at least one expander section are arranged in a common, hermetically sealed housing (21), wherein the shafts, i.e., the shaft (20) of the electric machine (19), the respective compressor shaft (13a, 13b) and / or the respective expander shaft, are all completely enclosed within the hermetically sealed housing (21) and are coaxial with each other, and wherein the shafts in the hermetically sealed housing (21) are supported by active magnetic bearings (22) are stored,with at least one electrical current source (24a, 24b) arranged outside the hermetically sealed housing (21), which is configured to electrically energize the windings of the electrical machine (19) and / or the magnetic bearings (22) for heating an interior space (23) bounded by the hermetically sealed housing (21) when the electrical machine (19) is stationary, wherein the same has at least one first electrical current source (24a) for energizing the windings of the electrical machine (19), and wherein the same has at least one second electrical current source (24b) for energizing the magnetic bearings (22), wherein the at least one first electrical current source (24a) is configured to electrically energize the windings of the electrical machine (19) such that a first phase (U) of the electric current supplied by the respective first electrical current source (24a) has a first current amplitude,a second phase (V) of the electric current supplied by the respective first electric current source (24a),

The invention discloses a collaborative design method for an oil seal and an air seal. The collaborative design method is characterized by comprising the following steps: step P1, step P2, step P3 and step P4. According to the method, a geometric coordination relationship is set, a sample database is established by adopting an experimental design method and a fluid dynamics analysis method, a BP neural network model with active learning ability is constructed, and an optimization algorithm is combined, so that the integrated collaborative design of the oil seal and air seal structure is realized. According to the oil seal and air seal collaborative design method, the problems that an existing design method is low in efficiency, not high in space structure utilization rate, ineffective in sealing and the like can be solved, and the design efficiency and applicability of a high-speed shaft sealing structure of the turbomachinery are effectively improved.

The utility model discloses a novel turbomachinery vector sealing structure. A vector sealing cavity is formed between a stator shell containing sealing teeth and a rotor. The vector sealing cavity is of a spray pipe type structure in mirror symmetry, and the spray pipe type structure comprises multiple stages of sealing cavities which are sequentially connected end to end and are provided with double throat parts; the sealing cavity is sequentially divided into an expansion section and a contraction section in the airflow flowing direction, and a tooth tip jet flow bypass is arranged between the contraction section and the throat part adjacent to the downstream of the contraction section; according to the thrust vectoring nozzle, the sealing cavity is designed to be of a thrust vectoring nozzle structure with a bypass channel, by means of tooth cavity pressure difference generated by the throttling effect, bypass jet flow is spontaneously driven to be mixed with main leakage flow, a leakage path is guided to directionally deflect in the circumferential direction and the radial direction, multi-dimensional reconstruction of a sealing flow field is achieved, and the dual purposes of reducing leakage and restraining fluid excitation are achieved. And a new method is provided for reducing sealing leakage and improving the excitation suppression performance of sealing fluid.

This application relates to the field of turbomachinery technology, and discloses a method for generating a cold-state blade model, an electronic device, and a storage medium. The method for generating the cold-state blade model includes the following steps: establishing a mapping relationship between the finite element points of the hot-state aerodynamic model and the finite element points of the hot-state intensity model; calculating the changes in the finite element points of the hot-state aerodynamic model under hot and cold conditions based on the mapping relationship and the changes in the finite element points of the hot-state intensity model under hot and cold conditions; and superimposing the finite element points of the hot-state aerodynamic model with the changes in the finite element points under hot and cold conditions to obtain an ordered cold-state blade model. Using the method of this application, a cold-state blade model composed of ordered points can be obtained. Furthermore, the cold-state blade model generation method of this application is simple to operate, has a high success rate, has low requirements for the distribution rules of random points in the cold-state airfoil finite element model, and yields good accuracy for the blade tip and root.

The invention discloses a fan-shaped blade grid test device capable of independently adjusting radial and single-blade axial gaps, belongs to the technical field of pneumatic tests of turbomachinery, and aims to solve the key problem that the axial and radial composite gap effect cannot be systematically researched and single-blade installation errors cannot be simulated on the same test bed in the prior art. The test device comprises a test section, wherein the test section is provided with an upper end wall, a lower end wall and a plurality of test blades mounted between the upper end wall and the lower end wall; the test device further comprises a radial adjusting mechanism used for continuously adjusting radial gaps between blade crowns of all the test blades and the upper end wall; the axial adjusting mechanism is used for independently and continuously adjusting the axial position of each test blade; wherein the radial adjusting mechanism and the axial adjusting mechanism are two sets of physically separated independent systems and are respectively configured in different areas of the test section.

The invention discloses a turbomachinery blade resonance interval identification method, device and equipment and a storage medium, and relates to the technical field of blade resonance identification. The method comprises the following steps: acquiring a blade tip pulse signal of the turbomachinery; the blade tip pulse signals are preprocessed, and target blade vibration displacement is calculated according to the preprocessed blade tip pulse signals; performing segmented time-frequency analysis on the vibration displacement of the target blade based on self-adaptive ultra-wavelet transform to obtain a two-dimensional relationship between aliasing frequency and rotation frequency; based on an undersampling principle, a resonance interval is identified according to a two-dimensional relationship between aliasing frequency and rotation frequency. Thus, the blade tip pulse signals are preprocessed, target vibration displacement is obtained after clean blade tip pulse signals are obtained, time-frequency analysis is carried out on the pulse signals through self-adaptive ultra-wavelet transform, and the vibration amplitude and frequency are accurately recognized in a scene with weak resonance characteristics and strong noise in combination with the undersampling principle. Resonance points prone to missing measurement in a traditional blade tip vibration monitoring method are captured.

The present invention relates to an adjusting ring arrangement for adjusting the blades of a turbomachine, wherein the adjusting ring arrangement comprises an adjusting ring (10) and a plurality of spherical bearings distributed around its circumference, each bearing having a bearing surface (11) associated with the adjusting ring and an inner body (12) tiltably mounted therein relative to the adjusting ring for attaching a lever (20) for adjusting one of the blades (30). The invention further relates to a turbomachine assembly, a gas turbine, the use of the adjusting ring arrangement, and a method for manufacturing the adjusting ring arrangement.

The invention relates to the technical field of turbochargers, and provides a turbocharging device and an unmanned aerial vehicle with the turbocharging device, and the turbocharging device comprises a turbine mechanism used for compressing air and a first shell used for guiding the air compressed by the turbine mechanism; the turbine mechanism comprises a turbine fan, a first power unit and a fan unit, wherein the first power unit and the fan unit drive the turbine fan to rotate. A transmission mechanism used for driving the turbofan to rotate in one direction is arranged between the fan unit and the turbofan. A dual-drive mode is adopted, electric drive and wind drive can be flexibly switched, the energy recovery function is achieved, energy consumption is effectively reduced, and the energy utilization rate is increased; by arranging the variable-pitch turbofan, the angle of fan blades can be adjusted according to actual requirements, so that rapid adjustment of airflow pressure is achieved, and the response speed of the turbocharging device is increased.

A multi-stage turbomachine (100) for processing a working fluid with at least one side flow (30) of the working fluid, the turbomachine having a casing (14), a shaft (16) supported by bearings (15), an inlet (12) for a main flow (20) of the working fluid, an outlet nozzle (17) for the main flow (20), and first and second impellers (7) and (8) cantilevered relative to the bearings (15). The turbomachine also has a nozzle (1) for introducing the side flow (30), a spiral scroll (5) housed within the casing (14) for imparting a degree of vorticity to the working fluid in the side flow (30), an annular channel (13) for transporting the side flow (30), and a mixing section (10) where the main flow (20) and the side flow (30) meet and mix.