66 results about "Pump design" patented technology

The invention discloses a method for optimizing key structure parameters of a deep well electric submersible pump based on performance simulation, and relates to the technical field of design optimization of electric submersible pumps, a three-dimensional geometric model of a deep well submersible centrifugal pump is built in advance, the three-dimensional geometric model comprises an impeller, a guide shell, a pump shaft, a pump shell, an upper connector, a lower connector and a full-flow-channel structure, and initial structure parameters are calibrated; and establishing a centrifugal pump simulation model based on a computational fluid dynamics technology, performing fluid domain extraction, grid division and grid independence verification on the three-dimensional geometric model, and setting fluid attributes, boundary conditions and a turbulence model. According to the method, a closed-loop iteration framework for simulation, optimization, evaluation and feedback is constructed by adopting a mode of coupling a computational fluid dynamics simulation technology and a genetic algorithm, the limitation of local parameter optimization in the prior art is broken through, systematic and collaborative optimization of key structure parameters of the submersible centrifugal pump is realized, and the method is suitable for large-scale popularization and application. And the efficiency of the optimization process and the final optimization effect are obviously improved.

This application belongs to the field of pump design technology, and particularly relates to a design verification method for the balance disc and motor electromagnetic components in a long-life pump system. The design verification method includes: Step 1, after integrating the design of the balance disc and motor electromagnetic components in the centrifugal pump system, determining the motor air gap and the outer diameter of the balance disc; Step 2, designing the parameters to be optimized in the balance disc; Step 3, using a fault diagnosis model, verifying the sliding bearing eccentricity fault of the centrifugal pump system containing the designed balance disc under operating conditions. If the verification fails, return to Step 2; otherwise, the verification is considered successful. This application ensures that the designed motor rotor diameter meets electromagnetic performance requirements, and the balance disc also has stronger balancing capabilities. Furthermore, it guarantees through verification that the designed balance disc will not cause sliding bearing eccentricity faults; significantly improving the overall performance and safety of the centrifugal pump system, while extending the lifespan of the centrifugal pump system.

A fluid pump (1) comprising a motor (10), a pump head (20), and a cooling sleeve (30). The motor (10) includes a stator assembly (11) and a circuit board assembly (13) located at one axial end of the stator assembly (11). The pump head (20) and the other axial end of the stator assembly (11) together enclose a cavity (40). The pump head (20) is provided with a fluid inlet (210) and a fluid outlet (211) that communicate with the cavity (40), and coolant is designed to enter the cavity (40) via the fluid inlet (210) and is then expelled from the fluid outlet (211). The cooling sleeve (30) is attached to the outside of the stator assembly (11) and is thermally connected to the circuit board assembly (13), and the cooling sleeve (30) and the outer circumferential surface of the stator assembly (11) together enclose a cooling channel (50).The stator assembly (11) is further provided with an inlet channel (60) and an outlet channel (70) to form the cooling channel (50) and the cavity (40), so that at least some of the coolant in the cavity (40) can enter the cooling channel (50) from the inlet channel (60) and then flow back into the cavity (40) from the outlet channel (70) to dissipate the heat generated by the circuit board assembly (13) and the heat transferred to the cooling sleeve (30). The fluid pump (1) has a simple design, occupies little space, and effectively dissipates the heat for an electronic control unit of the motor.

A drive unit (100) for a motor vehicle (105) comprises a machine housing section (300) with an electric machine (115) and a transmission housing section (305) with a transmission (130), as well as a hydraulic system (135) for cooling and / or lubricating thermal and / or mechanical consumers in the machine housing section (300) and in the transmission housing section (305). The hydraulic system (135) comprises a pump system (200, 600) with a first pump (601). The machine housing section (300) has a first suction point (310) which is hydraulically connected to the first pump (601) via a first suction line (225), and the transmission housing section (305) has a second suction point (400) which is hydraulically connected to the first pump (601) via a second suction line (230). Here, the first pump (601) is designed as a gear pump, which includes more than two externally toothed pump gears (611, 612, 613).

One embodiment of the present invention provides a technology that optimally designs a single-channel pump and improves performance such as high efficiency and low vibration of the single-channel pump. A method of designing a single-channel pump according to an embodiment of the present invention includes a first step of determining a shape of a volute and setting a plurality of points inside and outside the volute, a second step of selecting a target value, which is a value for a performance numerical value of the single-channel pump, and determining a shape of an impeller suitable for the target value, a third step of setting an analytical cross-sectional area, which is a channel cross-sectional area that adjoins inner and outer points in the volute, and setting a plurality of analytical cross-sectional areas for a plurality of portions in the volute, a fourth step of setting a structure design variable, which is a structural variable of the single-channel pump, and deriving the target value by a numerical analysis, and a fifth step of deriving, as a design plan, a structure design variable value that is a value of the structure design variable that allows the target value to satisfy a preset set target value.

The utility model relates to a hydraulic control system for a hybrid power box and a vehicle, and the hydraulic control system comprises a hydraulic oil way which comprises a main oil way and a working oil way, and the working oil way comprises a low-pressure oil way and a high-pressure oil way; the oil supply module is connected with the main oil way; the pressure switch valve is arranged on the high-pressure oil way and is used for controlling the on-off of the high-pressure oil way; the oil way switching valve is arranged among the main oil way, the low-pressure oil way and the high-pressure oil way and used for switching the communication state of the main oil way and the low-pressure oil way or the high-pressure oil way; the feedback cavity communicates with the high-pressure oil way through a feedback oil way, and the feedback oil way is located between the pressure switch valve and the oil way switching valve. According to the scheme, a traditional double-pump design is abandoned, high-low pressure automatic switching under driving of a single oil supply module is achieved, hardware is reduced, and cost is reduced; the feedback cavity of the oil way switching valve and the high-pressure oil way form linkage design through the feedback oil way, automatic switching of the oil flow direction can be achieved, external control signal intervention is not needed, control logic is simplified, and reliability is improved.

A method of designing an artificial lift system for producing fluid from a wellbore includes receiving wellbore data indicating configuration specifications and production specifications for the wellbore and identifying a plurality of candidate electrical submersible pump (ESP) designs for implementing in the wellbore based on the wellbore data. The method further includes determining a design score for each of the plurality of candidate ESP designs, the candidate ESP designs each indicating a collection of downhole components defining an ESP system. The design score is based on inventory data for an inventory of available downhole components and historical wellbore data, the historical wellbore data indicating historical conditions for the wellbore and historical production performance for the wellbore. The method further includes selecting an ESP design from the plurality of candidate ESP designs based on an associated design score best fulfilling one or more criteria.

Hydraulic braking system (30) for a land vehicle, with at least one wheel brake (48, 50) assigned to a wheel of the land vehicle; a master brake cylinder (36) which is hydraulically connected to the at least one wheel brake (48, 50), wherein the master brake cylinder (36) is configured to move hydraulic fluid into the at least one wheel brake (48, 50) when the brake system (30) is actuated by the driver; a pump (58) whose output is hydraulically connected to the at least one wheel brake (48, 50) and the pump (58) is designed to move hydraulic fluid into the at least one wheel brake (48, 50); a variety of valve arrangements (42, 44, 46, 54, 56, 60); a control unit (68) configured to control the pump (58) and the plurality of valve arrangements (42, 44, 46, 54, 56, 60); and an intermediate storage tank (10) which is hydraulically connected to the at least one wheel brake (48, 50) and an inlet of the pump (58), wherein the intermediate storage tank (10) includes a return element and is configured to - to accommodate a hydraulic fluid reserve volume during a rest state of the brake system (30), - to provide the pump (58) with the absorbed hydraulic fluid reserve volume during an actuation state for displacement into the at least one wheel brake (48, 50), and the return element comprises a piston (16) limiting the intermediate storage (10) and a first spring (22) acting on the piston (16), characterized in that the restoring element further comprises a second spring (24), wherein the first and the second spring (22, 24) are arranged such that the first spring (22) causes a restoring force directed in a first direction and the second spring (24) causes a restoring force directed in a second direction.

The utility model discloses a long-acting large-displacement oil lubrication plunger pump, and belongs to the technical field of plunger pump design and manufacturing. The long-acting large-displacement oil lubrication plunger pump further comprises a pair of electric cylinders fixedly connected to the left end face of the first right partition plate. The inner side end faces of the pair of second partition plates are fixedly connected with a pair of oil storage blocks correspondingly. The inner sides of the pair of second partition plates at the same height are slidably connected with sliding rods. A liquid channel is formed in the inner side of each sliding rod; each sliding rod is fixedly connected with the output end of the adjacent electric cylinder; a pair of second one-way valves is embedded in the two ends of the inner side of each liquid channel. A first one-way valve is embedded in the position, corresponding to the oil storage block, of each second partition plate. Two pairs of first one-way valves, two pairs of second one-way valves and two electric cylinders are arranged, so that two sliding rods move oppositely, hydraulic oil is continuously input into a pump outlet, long-acting large-displacement oil pumping is achieved, and meanwhile residual hydraulic oil on the inner side of an oil storage block can be used for oil lubrication.

The application provides a condensate water pressurizing system and method, belonging to the technical field of water pump design, comprising: a first end of a data processing module is connected to a condensate pump control module, and a second end of the data processing module is connected to an input end of a frequency conversion module; the data processing module is used for acquiring a rotating speed signal and a power signal of the condensate pump collected by the condensate pump control module; the data processing module is also used for obtaining a water pump rotating speed control signal based on the rotating speed signal and the power signal, and sending the water pump rotating speed control signal to the frequency conversion module; a first end of a water pump pressurizing module is connected to an output end of the frequency conversion module, and a second end of the water pump pressurizing module is connected to the condensate pump; the water pump pressurizing module is used for receiving the water pump rotating speed control signal output by the frequency conversion module, and driving the condensate pump based on the water pump rotating speed control signal. Through the cooperative control of the modules, the rotating speed and the pressure of the primary and secondary shaftless pumps are dynamically adjusted based on real-time working conditions, so that the anti-cavitation capacity of the condensate water system is improved.

The invention discloses a pet water dispenser main machine integrating control and a water pump, and the pet water dispenser main machine comprises a main machine shell, an upper cover, a bottom cover, a water outlet nozzle, a main control PCB, a living body sensor, a water pump rotor, a rotor driving device and an upper volute. Wires and water pipes are not arranged outside, water and electricity separation is achieved, the risk of electric leakage is avoided, the sealing performance is good, and waterproof glue is poured into the whole inner cavity of the host shell. In addition, the water pump rotor, the upper volute and the rotor sleeve of the water pump rotor can form an integral rotor module, the rotor module and the main machine shell can be integrally installed and disassembled, replacement is convenient, and the assembling efficiency is improved.

This application belongs to the field of pump design technology, and particularly relates to an integrated design method for the balance disc and motor electromagnetic parameters in a long-life pump system. The design method includes: based on the balance disc's outer diameter and the motor's air gap, using a genetic algorithm to solve for the set of alternative solutions for the motor air gap that maximize the coupled axial balance force objective function and minimize the coupled additional shaft power objective function; calculating the theoretical minimum outer diameter of the balance disc and the maximum allowable outer diameter of the motor under each alternative motor air gap solution; then performing a spatial feasibility check based on the maximum allowable outer diameter of the motor to select a reasonable value for the motor air gap; determining the optimal motor air gap by solving for the maximum comprehensive objective function; and using the maximum allowable outer diameter of the motor corresponding to the optimal motor air gap as the outer diameter of the balance disc for design. This application combines the design requirements of the balance disc with the optimization process of the motor's electromagnetic parameters, significantly improving the overall performance of the centrifugal pump system.

Pump for a washing machine, comprising a pump chamber with an inflow, an outflow and a pump chamber bottom, an impeller for guiding water in the pump chamber and optionally a plurality of guide vanes radially outside the impeller, which vanes are stationary and extend helically towards the pump chamber bottom. The pump is designed in the form of a centrifugal pump. According to the invention, at least one curved or bent guide vane is arranged on at least one guide vane or on a support ring below the impeller.

The application discloses a double-outlet cleaning machine pump, a design method of the pump and a cleaning machine, and relates to the technical field of cleaning machine pumps. The double-outlet cleaning machine pump comprises a volute and an impeller, wherein the impeller is driven to rotate by a motor and adopts a back-bent blade structure, the volute channel section is rectangular, and the flow channel is divided into two parts, i.e. an inner volute and an outer volute, which are connected with two independent water outlets, thereby meeting the double-water-path water supply requirement of the cleaning machine. The design method designs the volute structure through a mathematical analysis method, including calculation formulas of a partition tongue angle, a base circle diameter, an inlet width and a section boundary of different volute sections, establishes efficient design of the partition plate type and the partition tongue type volutes under different flow conditions, realizes full diffusion of water flow in the double-flow channels of the volute and efficient conversion of the water flow into pressure energy, and can meet the different water outlet quantity and head requirements of the double-water-path at the same time. The pump has the advantages of compact structure, efficient operation, convenience in integration into a modern dish washing machine system and excellent hydraulic performance and practical value.

An arrangement enables production of a multiple displacement pump designed to be activated either with a pneumatic or an electric drive from extensively similar parts or retrofitting of such a pump from one drive type to the other drive type with little effort. For this purpose, the displacer elements can be connected by way of a connection device that can be extended through a lid of the fluid chambers, so that optionally a mechanical actuator can be affixed, which can be connected to an electric drive or to a control valve.

The application discloses a design method of a two-stage high-speed axial propelling pump suitable for a shallow water working condition, and the two-stage high-speed axial propelling pump comprises a primary-stage impeller and a secondary-stage impeller, and is specifically implemented according to the following steps: according to the actual lift of the primary-stage impeller and the actual lift of the secondary-stage impeller, the actual design lift of the underwater vehicle in the design working condition is determined through a water jet propelling pump thrust and vehicle resistance balance equation; the cascade of the primary-stage impeller and the secondary-stage impeller is respectively designed by using a lift method, the section shape of the primary-stage impeller and the secondary-stage impeller is taken as an airfoil, the best airfoil shape in terms of anti-cavitation performance is selected, parameters in the actual design lift of the underwater vehicle in the design working condition are corrected according to the fluid dynamic characteristics of the airfoil, and the design of the two-stage axial pump impeller is completed; the two-stage axial pump for the underwater vehicle in the shallow water high-speed working condition can be quickly and efficiently designed, and the anti-cavitation performance requirement is met.

The utility model discloses a highly integrated electric pump, relates to the technical field of water pumps, and solves the technical problems that a traditional water pump is high in energy consumption, large and heavy in body, easy to leak and inconvenient to maintain, the highly integrated electric pump comprises an outer shell body, a shell cover, motors and an impeller, the two motors are symmetrically installed in the outer shell, and hollow shafts of the two motors accurately correspond to opening ring positions at the two ends of the impeller. A stable driving structure is formed through tight connection, and sealing treatment is conducted through the shell cover, so that the safety and stability of operation of the electric pump are effectively guaranteed; the simplified design of the utility model not only reduces the cost, but also improves the maintainability and reliability of the system; the highly integrated electric pump design is particularly suitable for occasions requiring high reliability and low maintenance, the structure is simplified, the size is reduced, and the operation stability is remarkably improved.

A hydraulic supply system (100), in particular for a drive motor (115) of a motor vehicle, wherein the supply system (100) comprises the following elements: a reservoir (125) for hydraulic medium (110); a supply line (135) for supplying hydraulic medium (110) from the reservoir (125) to a cooling or lubrication point (105), wherein hydraulic medium (110) exiting the cooling or lubrication point (105) is collected in a sump (150); a bilge pump (130) configured to pump hydraulic medium (110) from the sump (150) into the reservoir (125). The pumping capacity of the bilge pump (130) exceeds the volume flow rate of medium (110) flowing through the supply line (135), so that the bilge pump (130) can pump a mixture of hydraulic medium (110) and air.The storage tank (125) is designed as a pressure vessel whose internal pressure can exceed ambient pressure; the bilge pump (130) is designed to separate air from the pumped hydraulic medium (110), so that essentially air-free hydraulic medium (110) is pumped into the storage tank (125).

A fluid system for a vehicle, preferably for a vehicle chassis, includes: a pump for delivering a fluid, wherein the pump has a first fluid connection and a second fluid connection, an actuator which can be connected to the first fluid connection in a fluid-communicating manner via an actuator valve, wherein the pump is designed to deliver the fluid to be delivered in a first delivery direction and in a second delivery direction opposite the first delivery direction, so that the actuator is fluidically pressurized by the pump via the first fluid connection when the pump delivers in the first delivery direction, and the actuator is fluidically separated from the first fluid connection depending on the position of the actuator valve or the actuator is fluidically relieved by the pump via the first fluid connection when the pump delivers in the second delivery direction.

The invention belongs to the field of fluid machinery design, and particularly relates to a design method for widening an efficient area of a small-flow low-specific-speed multistage pump, which comprises the following steps of: S1, determining a flow amplification coefficient Kq, a specific-speed amplification coefficient Kns and a reference lift ratio Rb; s2, calculating a lift correction factor Fs based on the specific speed amplification coefficient Kns; s3, calculating a dynamic lift ratio R based on the lift correction factor Fs; s4, calculating a volute section design lift Hvo and a guide vane section design lift Hva based on the dynamic lift ratio R; s5, the design flow Qv of the guide vane section is calculated based on the rated flow Qr; and S6, designing a guide vane and a guide vane section impeller by taking the guide vane section design flow Qv and the guide vane section design lift Hva as basic parameters. The core contradiction of the design of the low-specific-speed multistage pump is solved, the efficiency of a rated point is guaranteed, meanwhile, the efficient area of the low-specific-speed multistage pump is widened, the working range of the multistage pump is widened, and the working stability of the multistage pump in a small-flow area is guaranteed.

The pump cover assembly comprises a pump cover and a filter, an annular baffle is arranged on the inner wall of the pump cover and divides a hollow inner cavity of the pump cover into a first containing cavity communicated with a water inlet and a second containing cavity communicated with a water outlet, and symmetrical mounting grooves are formed in the radial inner wall of the first containing cavity of the pump cover; a guide surface is arranged at the upper end between the symmetrical mounting grooves, the baffle is provided with first baffle through holes, the bottom plate of the filter is provided with symmetrical first bottom plate through holes, the first bottom plate through holes can be adaptively inserted into the mounting grooves without alignment, and the first baffle through holes are communicated with the first bottom plate through holes. The pump cover assembly and the water pump which are designed are easy to assemble and have a positive effect on noise reduction.

The invention relates to a thermal management module (1), at least comprising a module housing (100), a heat exchanger (2), and a pump (3), wherein the module housing (100) has flow channels (101, 102, 103, 104, 105, 113, 114) for a liquid medium, in particular oil; the heat exchanger (2) and the pump (3) are provided on the module housing (100); the pump (3) is designed to convey a flow of the liquid medium through at least one of the flow channels (101, 102, 103, 104, 105, 113, 114); the heat exchanger (2) is designed to transfer heat between the medium flow and another medium; and the interior of the module housing (100) is equipped with at least one electrohydraulic control valve (9) for controlling the medium flow through at least one of the flow channels (101, 102, 103, 104, 105, 113, 114) and with an electronic circuit part (8) which is electrically connected to the at least one electrohydraulic control valve (9) and to the pump (3) and is provided with a control circuit (83).

The invention discloses a jet flow wake three-dimensional flow efficient water pump design method, which comprises the following steps: acquiring three-dimensional flow field simulation data in a water pump flow channel, and simulating a fluid movement track by adopting a computational fluid mechanics method to obtain flow field distribution characteristics; according to the flow field distribution characteristics, an optimized flow channel geometric structure is determined; according to the optimized flow channel geometric structure, new three-dimensional flow field simulation data are obtained, and stable flow field distribution parameters are obtained; according to the stable flow field distribution parameters, fluid shear force data of the surfaces of the key parts are obtained, aiming at a high shear force area, a material database is adopted to match the type of an anti-corrosion coating, whether the thickness of the coating meets the durability requirement or not is judged, and if yes, a coating scheme is determined; and according to the coating scheme, calculating the residual life of the component by adopting a finite element analysis method to obtain a pump body life prediction result. The operation efficiency of the water pump is improved, and energy consumption is reduced; and the service lives of the pump body and core components are prolonged.

The invention relates to a low-pressure pulsating vane pump design method based on three-source decomposition and source item analysis and a vane pump, and the method comprises the steps that full-flow-field unsteady flow data of the vane pump under a preset working condition is obtained; a three-source decomposition model is established, and the total pressure pulsation under the static coordinate system is decoupled into a non-uniform pulsation component, a flow synchronous pulsation component and a flow non-synchronous pulsation component; constructing a pressure Poisson equation, and quantitatively analyzing the contribution proportion of a hydrodynamic source item by using a Green function integral method; optimization design is executed based on the analysis result, if the non-uniform pulsation component is dominant, the kinematic sweeping effect is judged, and the load distribution or stacking rule of the impeller blades is optimized; and if the flow synchronous pulsation component is dominant, the dynamic instability is judged, and the geometric parameters of the blade tip clearance are optimized or a vortex suppression structure is configured on the wall surface of the rim. Therefore, accurate decoupling of the kinematics effect and the fluid instability in the vane pump is achieved, and therefore accurate design of the low-pulsation vane pump is guided.

The invention relates to a rib plate, a pump and a pump design method.The pump comprises a pump shell, the rib plate and an impeller, the pump shell comprises an inlet and an impeller cavity which are communicated, the impeller is rotationally arranged in the impeller cavity, the rib plate is arranged on the inner wall of the inlet, and the rib plate is formed by thickening a filling base plane in the normal direction of the filling base plane; the boundary of the filling base plane comprises an outer boundary, an inner boundary, a front boundary and a rear boundary, the outer boundary, the front boundary, the inner boundary and the rear boundary are sequentially connected to form a closed boundary, the outer boundary extends in the axial direction of the inlet, and the spatial positions (x, y and z) of all points on the outer boundary and the inner boundary meet a double-twist-line equation. The design method of the pump comprises the following steps of defining parameters of the rib plate, generating a filling base plane, generating a rib plate main body, chamfering and installing the rib plate into a pump shell. Due to the unique shape design of the rib plates, the flow guide effect of the pump at the inlet is good, the hydraulic efficiency of the pump is improved, prerotation can be restrained, and the cavitation resistance of the pump is improved.

A motionless pumping design that reduces operation and maintenance costs, and enhances reliability in three aspects of pneumatics system configuration. A motionless and corrosion-resistant pump which uses the continuous generation of pressure variation push / pull force by relying on the venturi effect induced by a pair of gas ejectors together with an argon pneumatic sub-system.

This utility model relates to the field of rail transit equipment technology, specifically disclosing a spray motor for a windshield wiper of a rail transit vehicle, including a motor upper cover, a motor body, a motor lower cover, a motor base, and an impeller. The motor upper cover is configured as a container with one open end for mounting the motor body; the opening of the motor upper cover is sealed by the motor base; the motor lower cover is sealed to the motor base, and a cavity is provided between the motor base and the motor lower cover; the output shaft of the motor body passes through the motor base and is drivenly connected to the impeller disposed in the cavity; the motor lower cover is also provided with a drain outlet and a water inlet. This utility model has a simple overall structure, is convenient and practical, and has high reliability. In particular, through various good sealing settings, it prevents washing liquid from entering the motor, improving its reliability. Furthermore, the impeller of this utility model is less prone to clogging and damage compared to the impeller pump design.

This application relates to the field of coal mine mud pump technology, specifically disclosing a mud pump truck for directional drilling in coal mines. It includes a track assembly, a frame assembly mounted on the track assembly, and, from left to right, an energy storage assembly, a mud pump assembly, a high-pressure filter assembly, a multi-way reversing valve assembly, an oil tank assembly, a mine explosion-proof LED locomotive light, a mine explosion-proof three-phase asynchronous motor, a mine explosion-proof and intrinsically safe vacuum electromagnetic starter, and a table-like mounting platform. A pilot control assembly, a portable methane detector alarm, a mine explosion-proof emergency stop button, and mine explosion-proof control buttons are bolted to the mounting platform. This invention solves the technical problem in existing technologies where, to achieve high-flow, high-pressure mud transportation in coal mines, a dual-pump design with greater flow and pressure or increased pump power is used, leading to accelerated contamination and deterioration of the pump truck's hydraulic oil.

The invention discloses an optimized power generation system using combined hydraulic equipment, which relates to the technical field of power generation systems, and comprises a power source, a combined hydraulic water pump, an energy accumulator, a synchronous multi-way reversing valve, a plurality of groups of hydraulic power crankshafts, a transmission and a generator which are in transmission connection in sequence, a continuous and stable hydraulic oil flow is formed by adopting the design of the combined hydraulic water pump; in cooperation with the buffering and pressure stabilizing effects of the energy accumulator, pressure fluctuation is effectively counteracted, and stable hydraulic power input is provided for a follow-up system; the synchronous multi-way reversing valve is provided with three oil cylinder sets, each oil cylinder set comprises an oil inlet oil cylinder and an oil return oil cylinder, an included angle of 120 degrees is formed between every two adjacent cams, an included angle of 180 degrees is formed between every two corresponding cams of the two synchronous shafts, and alternate oil inlet and oil return actions of the three oil cylinder sets are achieved. The hydraulic push rod sets spaced by 120 degrees in the circumferential direction are matched to push the rotating plate and the circular plate to continuously rotate, the problem that power output of a traditional system is interrupted is solved, and constant-speed continuous mechanical kinetic energy is provided for a generator.

The invention relates to the technical field of design of guide vane type mixed-flow pumps, and provides an optimal design method and device for a guide vane type mixed-flow pump with double adjustment of movable and static vanes, and the method comprises the following steps: determining the number of movable guide vanes according to the number of impellers of the mixed-flow pump, dynamic and static interference characteristics and available space of the guide vanes; the inner diameter and the outer diameter of the movable guide vane section are determined according to the size of an impeller section, the structural characteristics of the guide vane section and the size of a water outlet runner section of the mixed-flow pump; based on an Euler motion equation, the three-dimensional shape of the movable guide vane is determined according to the number of the movable guide vanes, the inner diameter and the outer diameter of the movable guide vane section and the impeller outlet setting angle; determining the position of a rotating shaft of the movable guide vane according to the space structure characteristics of the movable guide vane section and the three-dimensional shape of the movable guide vane; and based on the number of the movable guide vanes, the inner diameter and the outer diameter of the movable guide vane section, the three-dimensional modeling of the movable guide vanes and the positions of rotating shafts of the movable guide vanes, an optimal movable and static vane matching combination suitable for different working conditions is determined.