240 results about "High lift" patented technology

The invention provides a modularized flow guide type multi-stage pump, and belongs to the technical field of water pumps. The modularized flow guide type multi-stage pump comprises a pump body assembly and a driving motor, the pump body assembly is formed by sequentially connecting a pump head pattern plate, a multi-stage pump shell, a multi-stage flow guide module set and a water retaining sealing cover, the pump head pattern plate is adjustably connected with a connecting end cover of the driving motor through a long screw rod, and the stage number of the pump can be adjusted by increasing or decreasing the number of the flow guide shells. Different lift requirements are met; the multi-stage flow guide module group is mainly composed of a water inlet flow guide shell, a transmission flow guide shell and a water outlet flow guide shell, a closed impeller is arranged in each flow guide shell to form an independent flow guide module, fluid is guided by spiral flow guide blades between the flow guide shells to orderly flow and smoothly transmit, and turbulent flow eddy current loss is reduced; and the water retaining sealing cover realizes double leakage prevention through a stepped sealing flange and mechanical sealing. The high-lift and high-flow pump has the advantages of being easy to disassemble, assemble and maintain, modularized and flexible to adjust, low in energy loss, high in lift, high in flow and high in sealing performance.

An aircraft wing includes a main wing and a high lift assembly which includes a high lift body and a connection assembly movably connecting the high lift body to the main wing, such that the high lift body is movable between retracted and extended positions. The connection assembly includes primary and secondary connectors mountable to and engageable with the main wing via primary and secondary mount profiles, respectively. The primary connector is rotatable relative to the primary mount profile and at least one of the connection assembly and the main wing to configure the primary connector and mount profile between a decoupled configuration in which the primary connector may be moved into so as to be engaged with, and removed from so as to be disengaged from, the primary mount profile, and a locked configuration wherein movement between the primary mount profile and the secondary mount profile is restricted.

The invention relates to a vertical water-cooling self-priming pump, and belongs to the technical field of fluid conveying. Comprising an upper liquid storage cylinder and a lower liquid storage cylinder which are fixedly connected, a water inlet pipe is arranged on the rear side of the lower liquid storage cylinder, a discharge pipe is arranged on the front side of the lower liquid storage cylinder, a water outlet pipe is arranged on the front side of the upper liquid storage cylinder, and an exhaust valve is arranged at the top of the upper liquid storage cylinder; a water-cooled motor is fixedly arranged in the upper liquid storage cylinder, a multi-stage water pump is arranged in the lower liquid storage cylinder and connected with the water-cooled motor through a coupling assembly, and a supporting assembly is arranged between the water-cooled motor and the inner wall of the upper liquid storage cylinder; an overflow protection assembly is arranged at one end, away from the lower liquid storage cylinder, of the water inlet pipe; the problems that an existing self-priming pump is unstable in installation of a special-shaped motor, high in requirement for the environment of a cooling system, low in lift, unstable in long-time operation and liquid overflows when the self-priming pump is closed are solved.

Towed aerodynamic platforms approach the behavior of flat plate airfoils to achieve high lift-to-drag (L:D) performance when operated at low pitch angles. A lead aircraft may tow multiple platforms to form train units. Low form drag and high L:D enable solar aircraft that are more robust and faster than approaches extending wingspan rather than extending the length of the aerial train. Applications extend beyond solar aircraft and include vehicles towed along an overhead monorail system and aerial drones.

The invention relates to the technical field of centrifugal pump control, and discloses an intelligent control multi-working-condition ultrahigh-lift single-stage centrifugal pump control method which comprises the steps that attention-guided dimension reduction fusion and multi-scale feature extraction are conducted on multi-source working condition data, and multi-scale operation features are obtained; time evolution and clustering processing are conducted on the multi-scale operation characteristics through a time clustering algorithm based on density, and the current working condition of the ultrahigh-lift single-stage centrifugal pump is obtained; and taking the current working condition, the performance parameters and the performance score of the ultrahigh-lift single-stage centrifugal pump as state vectors, and selecting an optimal control vector from a control space by adopting a reinforcement learning model. By fusing multi-source data and introducing time evolution modeling and reinforcement learning optimization strategies, intelligent sensing and self-adaptive control of the ultra-high-lift single-stage centrifugal pump under multiple working conditions and the whole life cycle are achieved, the problems that response to complex operation states is slow and adjustment lags in traditional rule driving control are solved, and the service life of the ultra-high-lift single-stage centrifugal pump is prolonged. The energy efficiency ratio, the operation stability and the equipment service life are improved.

The invention relates to a water pump scheduling method for estimating lift based on data driving, which comprises the following steps: calling structural information and sensing data, calculating friction loss and structural symmetry, extracting differential pressure data flow gradient, judging load matching degree, activating path nodes, identifying differential pressure data change sections, and mapping a calculation path. According to the method, dynamic correction and compensation of input parameters are achieved by means of conjoint analysis of the structural features of the water inlet and the water outlet and flow pressure difference data, and comprehensive judgment of the working condition matching degree and the periodic change state is combined, so that the flow resistance trend is judged, and the calculation result is corrected. The adaptability to cold load fluctuation and loop temperature difference change is enhanced, the response capability of lift calculation to water body characteristic change is improved by introducing flow resistance trend and viscous state factors, and the calculation stability of the model in different operation sections and the calculation accuracy of the model in complex working conditions are optimized by using a path activation configuration and output switching mechanism.

The application relates to a high-efficiency lift flapping wing, a dragonfly-imitating aircraft and an aircraft flight posture control method. The high-efficiency lift flapping wing comprises a flapping wing body and a plurality of one-way air door blades; a plurality of air vents are arranged on the flapping wing body, each one-way air door blade covers the air vent, and the one-way air door blade is used for allowing airflow to pass through the air vent in one direction. The high-efficiency lift flapping wing, the dragonfly-imitating aircraft and the aircraft flight posture control method have the advantages of high lift efficiency, reduced flapping wing burden, improved aircraft service life and stability.

The invention discloses a waverider profile and low-speed airfoil profile fused wide-speed-range airfoil profile design method, and relates to the field of aircraft airfoil profile design, and the method comprises the following steps: S1, based on a lift force generation mechanism of high-speed stage waverider compression characteristics and low-speed stage streaming characteristics, taking a high-speed airfoil profile waverider profile from an airfoil profile front section, and taking a low-speed airfoil profile rear half part from an airfoil profile rear section; s2, according to the task characteristics of the aircraft, a nonlinear weight method is adopted to calculate the distribution proportion of the waverider profile and the low-speed airfoil profile to obtain a basic airfoil profile; and S3, selecting predetermined areas in front of and behind the maximum thickness position of the basic airfoil to perform grid parameterized deformation so as to complete the wide-speed-range airfoil optimization design. According to the wide-speed-range airfoil profile design method integrating the waverider profile and the low-speed airfoil profile, the high lift-drag ratio of the high-speed waverider airfoil profile and the high lift coefficient of the low-speed airfoil profile are fully combined, and the airfoil profile requirement of wide-speed-range aircraft design is met by reasonably selecting the proportion of the waverider airfoil profile and the proportion of the low-speed airfoil profile.

A skew sensing apparatus for detecting skew in at least one, or a plurality of control surfaces of a vehicle. The apparatus includes a tension cord which is held under tension between a) a first spring associated with a sensor and a sensor target and b) an opposing second spring. During normal operation, the apparatus is configured to maintain said sensor target in a first position relative to said sensor, thereby indicating said normal operation. During an abnormal operation, the apparatus is configured to shunt said tension cord such that said sensor target is translated to a second position, relative to said sensor thereby indicating said abnormal status.

A wing for an aircraft, comprising a main wing and a high lift assembly which includes a body, and an assembly connecting the body to the main wing, so the body is movable between a retracted position and an extended position. The assembly comprises a track extending along a longitudinal axis between first and second ends, with an intermediate portion therebetween. A roller bearing ensures that the track moves along the longitudinal axis. The roller bearing comprises bearing units, each mounted to the main wing and having a bearing surface for engaging the elongate track. The units include a first and second end units and an intermediate unit wherein, relative to the longitudinal axis, the intermediate unit is positioned between the first end unit and the second end unit. The elongate track comprises a recessed portion which, in the retracted position, aligns the intermediate unit.

A rotor blade for a wind turbine is provided. The rotor blade includes a high lift root profile with flat-back trailing edge with a suction side and a pressure side, a relative airfoil thickness being between 45% and 75% or between 48% and 70% of a chord length. A trailing edge thickness is between 30% and 75% or between 35% and 60% of the relative airfoil thickness. The chord position of the maximum relative airfoil thickness, which is measured from a leading edge towards the trailing edge, is between 35% and 45% or between 36% and 42% of the chord length. Also provided is a wind turbine equipped with the rotor blade(s).

The utility model belongs to the technical field of water pump application, and particularly discloses a high-flow self-adaptive sewage pump. Comprising a fan blade cover, a motor rear end cover, a machine barrel, a motor front end cover, a pump head, fan blades, a shaft clamp spring, a stator assembly, a first rolling bearing, a rotor assembly, a volute, an impeller, a water retaining ring, a water outlet, a water inlet, a waterproof switch assembly, a switch sealing gasket, a capacitor, a capacitor box lower cover and the like which are assembled in a matched mode. The utility model has the beneficial effects that: before the water pump works, the vortex cavity needs to be filled with water; when the impeller rotates at a high speed, liquid between the blades rotates along with the blades, so that the liquid obtains higher pressure energy, and the lift is improved; the volute and the impeller are respectively made of integrally-formed gray cast iron and have good abrasion resistance, the service life of the volute and the service life of the impeller can be prolonged, and it is guaranteed that the water pump has the long service life under the high load. The working efficiency of the whole machine is improved by using a high-efficiency induction type motor; the hook structure facilitates storage of a power line, and the use convenience of the water pump is improved.

The utility model relates to the technical field of centrifugal pump production, in particular to a pump cover punching tool of a high-lift circulating pump, which mainly comprises an inner clamping component, a water inlet hole punch forming component and a mounting hole punch forming component. The mounting hole punch forming assembly is used for punching a mounting hole in a mounting convex plate of a pump cover blank, the inner clamping assembly is used for providing inner clamping support for the pump cover blank, and bearing pressure is provided in the water inlet hole punch forming and mounting hole punch forming processes, in this way, the cover body deformation condition can be avoided in the punching machining process, and the service life of the pump cover blank is prolonged. And the requirement of punching the lateral water inlet hole and the axial mounting hole at the same time is met.

The present application provides a kind of mechanical arm for spray seeding greening, including flexible connecting pipe, one end of the connecting pipe is connected with platform, the other end is connected with spray gun seat, connecting rod A is fixedly connected with the spray gun seat, connecting rod B is rotatably connected with the connecting rod A, the platform is fixedly connected with support, the connecting rod B is rotatably connected with support, further including drive mechanism, the drive mechanism is connected on the support, and the output end of drive mechanism is rotatably connected with connecting rod A, to drive connecting rod A to rotate around the output end of drive mechanism and the rotation point of connecting rod A while doing vertical motion.The present application changes the bending mode of the connecting pipe uniformly when in use by the structure, can reduce the wear and tear of connecting pipe and pressure loss in pipeline, improve lift, avoid blockage, convenient to replace, wide source, strong availability, the present application is light in weight, low in cost, adjustable spray seeding angle is large, and spray seeding efficiency is high.

A heat exchanger for heating, ventilation, air conditioning and refrigeration (HVACamp; a compressor system of an HVACamp (R, R) system, the compressor system comprising one or more compressors configured to circulate a working fluid through the HVACamp; a vapor compression system of an R system, each compressor of the one or more compressors having a pre-rotating vane (PRV) and a variable geometry diffuser (VGD), the PRV and the VGD configured to operate to adjust a capacity of the compressor system. The compressor system further includes a controller having a memory and processing circuitry, where the memory includes instructions stored thereon that, when executed by the processing circuitry, cause the processing circuitry to: determine a head coefficient for each compressor of the one or more compressors, and determine a head coefficient for each compressor of the one or more compressors; determining a compressor lift for each of the one or more compressors based at least in part on the head coefficient, comparing the compressor lift for each of the one or more compressors to a low lift threshold and a high lift threshold, and operating each of the one or more compressors in a first mode or a second mode based on a comparison of the compressor lift to the low lift threshold and the high lift threshold.

A multidisciplinary approach to the automated optimization design of high-flying paragliders integrates automated and modularized functions, including geometric modeling, mesh modeling, aerodynamic calculation, and airfoil shape optimization. These modules are integrated through the Isight platform to establish a multidisciplinary optimization design framework. This method decouples the issue of improving the aerodynamic performance of three-dimensional paragliders and automatically optimizes the airfoil based on parameters such as the canopy structure and material. Each module automatically reads previous result files and runs in a loop, requiring no human intervention, to automatically output the optimized airfoil with the highest lift-to-drag ratio. This method is highly efficient, utilizes a functional airfoil design, offers high precision, and facilitates automated processing and production. This method holds significant implications for the optimized design of high-flying paragliders.

The invention belongs to the technical field of water conservancy projects, and discloses an extra-high arch dam bank slope dam section concrete first bin high lift layer construction method which comprises the following steps: step 1, determining dam concrete construction layering, step 2, establishing a template support model, step 3, carrying out stress checking calculation and the like. According to the extra-high arch dam bank slope dam section concrete first bin high lift layer construction method, PKPM structural calculation software is combined with the structural form of a dam, the distance from an upstream excavation face is combined, a model is established for structural stress and stability analysis, high lift layer construction is achieved, the highest lift layer height is large, multi-bin parallel one-time pouring is achieved, the pressure of a standby bin is relieved, and the construction efficiency is improved. The construction efficiency is improved. According to the ultrahigh arch dam bank slope dam section concrete first bin high rising layer construction method, the pouring height and quality of each layer can be effectively controlled, the uniformity and compactness of concrete are ensured, and the construction precision of the whole structure is improved.

A high lift system monitoring arrangement (24) includes: a sensor (32), a monitoring unit (34) connected to the sensor (32), wherein the monitoring unit (34) includes: an acquisition module (46), that acquires an analog sensed information (AI) from the sensor (32), a processing module (48) having a first processing circuitry (48A) and a second processing circuitry (48B), different from the first circuitry, wherein the first processing circuitry (48A) processes the analog sensed information (AI) into a first digital sensor data (DD1), the second processing circuitry (48B) processes the analog sensed information (AI) into a second digital sensor data (DD2).

The high-lift horizontal submersible pump comprises a protective shell, the end, close to a water inlet of a submersible pump body, of the protective shell is fixedly connected with a positioning cylinder through a bolt, the end, away from the protective shell, of the positioning cylinder is fixedly connected with a filtering cover, and the inner side face of the positioning cylinder is fixedly connected with a filtering plate; embedding grooves are correspondingly formed in the positions, opposite to the filter plates, of the surface of the filter cover, the protective shell is fixedly connected with a main vertical plate through a fixing ring, the main vertical plate is fixedly connected with a base through a main transverse plate, and fixing blocks are symmetrically connected to the two sides of the base. According to the high-lift horizontal submersible pump, through cooperation of the filter cover, the filter plate, the positioning cylinder, the fixing ring and the base, the water inlet of the high-lift horizontal submersible pump can be provided with a double-filter structure, the double-filter structure can be conveniently assembled, disassembled and cleaned, and the probability that the high-lift horizontal submersible pump breaks down is reduced.

Disclosed are a wing for an aircraft, a leading edge high lift assembly and an aircraft, the wing comprising a main wing and a leading edge high lift assembly, the leading edge high lift assembly comprising a slat and a connecting assembly movably connecting the slat to the main wing, and a connecting assembly for connecting the slat to the main wing such that the slat is movable between a retracted position, a first extended position, and a second extended position, where the connecting assembly comprises an elongate slat track, a first end and / or a middle portion of which is mounted to the slat, the slat track being mounted to the main wing by means of a roller support. The aim of providing a wing with a beneficial ratio of aerodynamic performance to noise resulting from the extension of the slat is achieved, in which the slat track and the roller support are configured such that, in a retracted position and a first extended position, the slat rests against the main wing and, in a second extended position, the slat rests against the main wing. A gap is formed between the trailing edge of the slat and the leading edge of the main wing.

The invention belongs to the technical field of submersible pumps, and provides a medium-high-lift full-cross-flow submersible mixed-flow electric pump which comprises a water suction chamber, an impeller and a water outlet cylinder which are coaxially connected in sequence, a rotating shaft is arranged in the center of the impeller, the two ends of the rotating shaft are in rotatable supporting connection with the water suction chamber and the water outlet cylinder respectively, and a motor shell is arranged on the outer side of the impeller. The two ends of the motor shell are fixedly connected with the water suction chamber and the water outlet cylinder respectively, a wet stator is fixed to the inner side of the motor shell, a permanent magnet rotor is fixed to the outer side of the impeller, the wet stator drives the permanent magnet rotor to drive the impeller to rotate, and a fixing sleeve for fixing the permanent magnet rotor is arranged on the outer side of the impeller. And gaps are formed between the end parts of the two sides of the fixing sleeve and the water suction chamber and between the end parts of the two sides of the fixing sleeve and the water drum and are tooth-shaped. And through the arrangement of the tooth-shaped gaps, the path length of the gaps is prolonged, and a vertically staggered blocking structure is also formed, so that particulate matters in a water body can be prevented from entering the motor cavity.

The application discloses a kind of high lifting gantry front and rear movement operation control method, including front and rear movement handle, operation control method includes the following steps: step 1, monitoring front and rear movement handle output signal;Step 2, if front and rear movement output signal C1 is in bM to M / 2 or M / 2 to (1-b)M, execute step 3, if front and rear movement output signal C1 is in 0 to bM or (1-b)M to M, execute step 4, wherein 0<b<0.5;Step 3, front and rear movement handle slowly moves, forklift gantry slowly moves;Step 4, front and rear movement handle quickly moves, forklift gantry quickly moves, the present application is by identifying gantry front and rear movement direction, control oil pump motor different speed, so that gantry front and rear movement speed is equal, improve gantry front movement speed, improve work efficiency, by identifying fork lifting height, different fork lifting height control different gantry front and rear movement speed and front and rear movement start acceleration, reduce high position operation shake, improve high position operation stability.

The invention relates to the field of submersible pump protection, in particular to a light submersible pump with a chopping and tearing high-lift protection structure, and aims to solve the problem that a rotary blade or a cutting disc driven by a driving shaft is usually arranged near a water inlet of some existing submersible pumps with cutting or tearing functions to crush entered sundries. Fine impurities subjected to crushing treatment easily block filter holes, cleaning is inconvenient, frequent shutdown maintenance is needed, and long-term stable unattended operation cannot be achieved. According to the light submersible pump with the chopping and tearing high-lift protection structure, in the rotating process of a cleaning conical block, the conical outer wall of the cleaning conical block moves relative to the surfaces of flow guide cones on the two sides; the flexible scraping strips at the ends of the cleaning conical blocks make contact with the hole walls of the main flow filtering holes and stretch into the main flow filtering holes, and along with continuous rotation of the cleaning conical blocks, the flexible scraping strips stretching into the holes sweep attachments on the inner walls of the holes and the intercepting grid bars.

1. The name of the design product: Car roof tent (side opening lifting H-01). 2. The use of the design product: used as a tent installed on the roof for accommodation, rest and leisure. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model is suitable for the technical field of ground driving screw oil-well pumps, and provides a large-displacement high-lift screw pump which comprises a screw pump stator, a transition oil pipe and a tail pipe are arranged at the two ends of the screw pump stator respectively, a screw pump rotor is arranged in the screw pump stator in a penetrating mode, and the transition oil pipe is connected with the tail pipe. The two ends of the screw pump rotor extend into the transition oil pipe and the tail pipe correspondingly, and a plurality of S-shaped closed cavities are formed between the screw pump stator and the screw pump rotor. Preferably, the end portion of the tail pipe is sleeved with a limiting stopper reducer union, a limiting stopper baffle is arranged between the limiting stopper reducer union and the end portion of the tail pipe, the limiting stopper baffle is welded to the limiting stopper reducer union, and the tail pipe is in threaded connection with the limiting stopper reducer union. The scheme has the advantages of large discharge capacity and high lift, the liquid production capacity of a single well is greatly improved, and the discharge capacity of the pump is increased; the mechanical power of the oil pumping screw pump is fully utilized, and the oil extraction cost is effectively reduced.

The present invention discloses a design method for a high-lift, high-speed, two-stage shielded pump capable of balancing axial forces. By differentiating and refining the front and rear cover plates of the centrifugal impeller, the force difference between the front and rear cover plates of the two-stage impeller is used to balance the axial force directed toward the inlet of the first-stage impeller due to the high pressure at the inlet of the secondary impeller of the two-stage shielded pump. The steps are as follows: determining the basic performance parameters of the pump to be designed; determining the basic structure of the pump; allocating the outlet head of the two-stage impeller; determining the impeller parameters; respectively calculating the axial force generated by the asymmetry of the front and rear cover plates of the two-stage impeller, the fluid dynamic reaction force on the impeller, and the axial force generated by the pressure difference between the inlets of the two-stage impeller; calculating the axial resultant force. If it is less than the maximum pressure that the thrust bearing assembly can withstand, the design is completed. Otherwise, the outlet head of the two-stage impeller is redistributed and the impeller geometric parameters are adjusted until the requirements are met. This method does not add additional axial force balancing measures. The centrifugal pump designed by this method is highly efficient and reliable in operation.

A leading edge high lift assembly (6) including a slat (7), and a connection assembly (9) movably connecting the slat (7) to a main wing (5), wherein the connection assembly (9) includes a slat track (17) having a first end (21) or an intermediate portion (25) mounted to the slat (7) and the slat track (17) is mounted to the main wing (5) by a roller bearing (27) having bearing units (34a-c) mounted to the main wing (5) and having a bearing surface (22) engaging an engagement surface (35) on the slat track (17), the bearing units (34a-c) include a first end roller unit (34a) and an intermediate roller unit (34b) wherein the intermediate roller unit (34b) is positioned between the first end roller unit (34a) and the second end (23) of the slat track (17).

The utility model relates to the technical field of single-folded rope groove winding drums, and discloses a single-folded rope groove winding drum for a high-lift winch, which comprises a support frame I, a winding drum is rotatably connected to the top of the support frame I, a support frame II is arranged on one side wall of the support frame, and a traction assembly is arranged on the outer wall of the support frame II. A dismounting assembly is arranged on the side wall of the winding drum; the traction assembly comprises a second traction roller, the outer wall of the second traction roller is arranged on one side of the second supporting frame, a motor is arranged on the side wall of the second supporting frame, the output end of the motor is fixedly connected to the side wall of the second traction roller, and a first connecting block is fixedly connected to the interior of the second supporting frame. According to the utility model, the motor is started to drive the first traction roller to rotate and then drive the second traction roller at the top to rotate, when the steel wire ropes with different sizes are encountered, the first traction roller rotates to compress the first spring in the second support frame, and the first spring retracts due to the elastic change of the spring, so that the effect of adapting to the steel wire ropes with different specifications is achieved.

The utility model relates to the technical field of steel wire rope winding error compensation, in particular to a steel wire rope multi-layer winding crane positioning error compensation device which comprises a lifting part and a lifting balance group, the lifting part comprises a lifting steel wire rope group; the lifting balance group is used for keeping the balance of a rope body included in the lifting part in the use process, and comprises a balance pulley and a balance arm; the lifting steel wire rope set comprises a main lifting mechanism and an auxiliary lifting mechanism. Based on the structural arrangement, the problems that the winding length of the steel wire rope is unbalanced, the steel wire rope is difficult to adjust and the rope body is twisted due to the manufacturing error of the winding drum and the extension and extension of the steel wire rope in the current ultrahigh-lift lifting process can be solved, and the stability, the balance and the safety in the lifting process are improved.

The invention relates to an unmanned aerial vehicle ejection control method based on plasma pneumatic gain and a medium, and relates to the technical field of unmanned aerial vehicle system design and launching. In the scheme, the current flight stage of the unmanned aerial vehicle is judged, in response to a judgment result of an inertia climbing stage, an expected pitch angle is set as a catapult pitch angle, a leading edge DBD is started at rated power, and meanwhile, a trailing edge DBD is kept closed; and in response to the judgment result of the unpowered glide / glide stage, controlling the unmanned aerial vehicle at the highest lift-drag ratio, starting the trailing edge DBD at the rated power, calculating the difference value obtained by subtracting the reference angle of attack from the real-time angle of attack in real time, judging whether the difference value is greater than a preset first threshold value or not, and if so, starting the leading edge DBD at the maximum power until the difference value is not greater than the preset first threshold value. Compared with the prior art, the terminal height is increased or the endurance is prolonged, and the flight performance of the ejection unmanned aerial vehicle is improved.