649results about How to "High lift" patented technology

The invention is a flight vehicle, and methods of operation thereof, having wings and movable propeller assemblies which can be rotated to provide vertical and/or horizontal thrust. The propeller assemblies are configured to maximize available engine/propeller thrust and to prevent propwash from striking the wings of the aircraft.

The invention discloses a creel device of a yarn dyeing machine with an ultra-low bath ratio, which comprises a sand table, a suspender and a yarn rod, wherein the upper surface of the sand table is in a disk shape; the lower end of the sand table is in a cavity structure; the yarn rod is in a hollow barrel structure; a water drum is arranged in the barrel of the yarn rod and is in a hollow or solid columnar structure; the center line of the yarn rod and the center line of the water drum are same; the ratio of the hollow internal diameter of the yarn rod and the external diameter of the waterdrum is 10:7-9; and the barrel of the yarn rod is evenly provided with a plurality of water outlets along the circumference of horizontal cross sections of different heights. The hollow barrel of theyarn rod disclosed by the invention is provided with the water drum, which is favorable for reducing the volume of dye liquor in the yarn rod and for reducing a water bath ratio; under the same main pump power, the water drum is favorable for improving the practical lift of a pipeline relatively, the flow rate of the dye liquor in the yarn rod is improved, the levelling property of cheeses of upper layers and lower layers can be better guaranteed, and the one-time success rate for dyeing is improved; and from the bottom to the top, the water outlets on the barrel of the yarn rod at the outer side of the water drum are thicker at the higher place of the yarn rod, which is favorable for realizing the purpose of even dye transfer.

The present invention relates to a miniature sprayer sealing device designed for preventing leakage. Said device includes the following several components: push-cap, spraying piece, head cap, valve rod, sealing ring, fastener, long spring, pump body and suction tube. Said invention also provides the concrete structure of every above-mentioned component, connection mode of all the components and working principle of said miniature sprayer sealing device.

The invention discloses an ultralow liquor ratio zipper dyeing machine and dyeing process thereof. The dyeing machine comprises a tube cylinder, a cylinder cover and a zipper warp beam plate frame embedded into the tube cylinder. The zipper warp beam plate frame comprises a zipper plate seat, a hollow water drum, a zipper woven belt, a zipper tube sleeve, a locking bolt, and a zipper frame lifting ring. The lower end of the hollow water drum is fastened on the zipper plate seat, the zipper tube sleeve is sleeved on the outer side of the hollow water drum, and a diversion inlet and a diversion outlet are arranged below the zipper plate seat and connected with an infusion pump through a horn-shaped pipe sleeve. The dyeing process comprises the stages of scouring and bleaching, dyeing and water scrubbing. According to the ultralow liquor ratio zipper dyeing machine and the dyeing process thereof, a lift range required by zipper woven belt dyeing water level can be achieved when the height of dye liquor in the dyeing machine is lower than the zipper plate seat, the effect of ultralow liquor ratio zipper dyeing is achieved, the dyeing machine has a lower dying liquor ratio than a traditional zipper dying machine, and the purposes of saving electric energy, steam and the dye liquor, shortening dyeing and finishing periods, and saving energy and reducing emission are achieved.

The invention discloses a frequency conversion high-speed wet type submersible pump relating to a fluid mechanical submersible pump and comprising a base (1), an impeller (3), a guide blade (4), a rear pump cover (5), a front sliding bearing (6), a thrust plate (7), a motor, a rear sliding bearing (11), a rear end cover (12), an outlet flange (14), an induction wheel (2), an auxiliary impeller (10), a filter (15) and a cooling pipeline (16), wherein the impeller (3) is connected with a motor shaft and is in a partially flowing or eccentric structure, the front end of the impeller (3) is provided with the variable pitch induction wheel (2), the outlet of the impeller (3) is provided with the guide blade (4); and the motor adopts a frequency conversion motor. The frequency conversion high-speed wet type submersible pump is a novel industrial pump with the advantages of small size, light weight, large lift, high efficiency and wide performance range, and is used for mine production drainage, permeable emergence and rescue and emergence drainage of other occasions.

The invention provides a large-volume three-dimensional circulating aquaculture system, which is simply structured and integrated. The large-volume three-dimensional circulating aquaculture system adopts a large-volume fishpond and an intermittent air lifting pump, and is characterized in that: the upper part of the large-volume fishpond is provided with a fish culture zone in which a net cage is arranged for culturing fishes; the middle part of the fishpond is provided with a biomembrane purification zone which is filled with a high-density three-dimensional elastic filler for highly-efficiently removing toxic nitrogenous wastes of ammonia nitrogen in culture water; the bottom of the large-volume fishpond is provided with a sharp bottomed mud collecting zone and a shellfish filtering purification zone for treating culture water precipitates, and a blowdown pipe is arranged at the sharp bottom; the intermittent air lifting pump is formed by connecting a bottom water inlet pipe, a collection chamber and a vertical water outlet pipe in series; the bottom water inlet pipe is connected with the blowdown pipe at the sharp bottom; an air inlet hole is formed on the lateral part of the upper end of the collection chamber, and is connected with a fan; a filter bag is arranged at the top end of the vertical water outlet pipe, and intercepts suspended particles in the culture water; and the culture water flows back to the large-volume fishpond.

A variable valve operating apparatus including a drive cam, a rocker cam pivotally supported on a first pivot, a lift varying mechanism operative to change a pivotal position of the rocker cam to vary a valve lift of an engine valve, a swing arm including one end portion at which the swing arm is pivotally supported on a second pivot and the other end portion contacted with the engine valve, a hollow space defined between the end portions of the swing arm, and a driven roller rotatably disposed within the hollow space of the swing arm and contacted with a cam surface of the rocker cam. When the valve lift of the engine valve is a predetermined lift amount or more, a contact point between the driven roller and the rocker cam is located in the hollow space of the swing arm.

A multi-element airfoil system includes an airfoil element having a leading edge region and a skin element coupled to the airfoil element. A slat deployment system is coupled to the slat and the skin element, and is capable of deploying and retracting the slat and the skin element. The skin element substantially fills the lateral gap formed between the slat and the airfoil element when the slat is deployed. The system further includes an uncoupling device and a sensor to remove the skin element from the gap based on a critical angle-of-attack of the airfoil element. The system can alternatively comprise a trailing edge flap, where a skin element substantially fills the lateral gap between the flap and the trailing edge region of the airfoil element. In each case, the skin element fills a gap between the airfoil element and the deployed flap or slat to reduce airframe noise.

The invention discloses a method for optimally designing impellers of bidirectional axial flow pumps. The method is characterized by comprising steps of designing hydraulic power on planar hydraulic power graphs of impellers in a central symmetry manner; completely modifying working faces of wing sections of the impellers into straight lines, enabling inlets and outlets of the backs of the wing sections of the impellers to be in circular arc transition, properly thickening the middles of the wing sections of the impellers and modifying the wing sections of the impellers into symmetrical structures; designing the impellers according to a plurality of main parameters including wrap angles phi of blades, diameters d<h> of hubs, diameters D of the impellers, setting angles beta<L> of lines, chord lengths I and radiuses R<1> of the lines. The method has the advantages that the performance of the impellers of the bidirectional axial flow pumps can be improved by means of optimizing the wing section and the planar graphs of the impellers on the basis of the traditional streamline method for designing impellers of axial flow pumps, and accordingly the purpose of improving the efficiency and the cavitation erosion resistance of the impellers of the bidirectional axial flow pumps can be achieved; high efficiency, a wide efficient range and the good cavitation erosion resistance of the bidirectional axial flow pumps can be guaranteed by the aid of the method, and the method is applicable to bidirectional axial flow pumps with the specific speeds ranging from 600 to 2000.

The invention discloses a multi-ion-field indoor air purifier. The multi-ion-field indoor air purifier comprises a power source, a suction opening, a filter, a plasma reactor, a suction device and an exhaust port. The plasma reactor comprises a plurality of pole plates which are arranged in a layering manner, and the positive electrodes and the negative electrodes of the pole plates are arranged in a staggered manner. The polarities of the vertically adjacent pole plates are opposite. After all sets of electrodes of the multi-ion-field low-temperature plasma reactor form ion field units, a plurality of ion fields are formed among the ion field units. Under the same electric power, the efficiency of the reactor is improved in a multiplied manner, and energy consumption is saved in a multiplied manner. An upper-suction and lower-exhaust air processing structure is adopted, the height of the machine type is more than 1,000 mm and is close to the suspension height of polluted air, the phenomenon of the air short circuit is avoided, and the indoor space is rapidly purified completely. An airflow channel of the multi-ion field low-temperature plasma reactor is designed to be of the structure vertically circulating with the multi-hole pole plates, and the circulation amount is large while blockage cannot happen. The airflow channel can be easily taken out to be cleaned and recycled, and the using cost is greatly reduced.

The invention provides a structure of a pump-jet water propeller system for a five-element combined ship. A screw pump, a multi-stage series axial-flow pump and other members are optimally combined in the system, which generates a qualitative leap, achieves the purpose of super-powerful water-jet propulsion, meets the requirement of super-powerful propulsion for various modern high-speed ships and the requirement of energy saving, and eliminates the fatal flaws of water-jet propulsion using a screw propeller or a single axial-flow pump or mixed-flow pump in terms of principles. The five innovation points are as follows: a first element is a pre-mounted multi-stage dual-circular arc gear pump which is used for guaranteeing and increasing pressure and speed, a second element is a screw pump, a third element is a multi-stage axial-flow pump, a fourth element is an air/water co-jet boost structure and a fifth element is a guide pipe which is mounted at a jet mouth to achieve the energy saving effect. The two independent pumps are arranged inside a cabinet and produce less noise. The pump-jet water propeller system is suitable for being set with a super-high power to support the large-sized and high-speed ships. The third element, the second element and the first element are assembled in sequence to form an air pump for ships. The pump-jet water propeller system is applied to the development and application of the high-speed ships and can promote the development of related industrial chains.

The invention discloses an LNG immersed pump and belongs to the technical field of LNG. A stator and a rotor shaft are arranged in a motor cavity in the LNG immersed pump, and side wall channels are arranged in the side wall of a pump body; a motor upper cover is connected to the rear end of the pump body and provided with a plurality of liquid flowing channels communicated with the side wall channels, and the liquid flowing channels are arranged in an inclined mode and intersect with one another at a liquid outlet; a motor lower cover is connected to the front end of the pump body, liquid via holes communicated with the side wall channels are formed in the motor lower cover, a shell is connected to the motor lower cover to form a working cavity and provided with a first-stage flow guide disc to partition the working cavity into a front cavity and a rear cavity, a flow channel communicated with the front cavity and the rear cavity is arranged on the first-stage flow guide disc, a second-stage impeller is arranged in the rear cavity, a first impeller is arranged in the front cavity, a liquid inlet is formed in the front cavity in a connected mode, and an inducer is arranged in the liquid inlet; the rotor shaft penetrates through the motor lower cover and the working cavity and extends into the liquid inlet, and the first-stage impeller, the second-stage impeller and the inducer are all arranged on the rotor shaft in a sleeved mode. The LNG immersed pump is simple in structure and suitable for being popularized and used.

The invention relates to a design method for an impeller of a single-channel cutting pump. The design method provides design formula of main geometric parameter outer diameter, outlet width, inlet diameter and blade wrap angle of blades. The flow condition can be improved by using the single-channel impeller, and the lift and efficiency as well as operating reliability of the single-channel pump are improved.

The invention discloses a method and a device based on coal gasification for preparing hydrogen and separating CO2. Coal and water vapor enter a gasification reaction chamber for gasification to obtain H2, CO and CO2. CO is converted to CO2 through a transformation reaction, and CO2 is absorbed by CaO to generate CaCO3. H2 and remnant CO2 enter a gasification bed rising pipe, and CaCO3 and remnant coke enter a calcium oxide regeneration reaction chamber. Pure oxide is introduced to the calcium oxide regeneration reaction chamber, the coke is burned with the oxide, CaCO3 is decomposed to CO2 and CaO, CO2 is separated with the CaO by a separator and is collected, and CaO enters the bottom of the gasification bed rising pipe to be raised by the H2 and the remnant CO2, and the CO2 is absorbed. Parts of the H2 and the CaO return to the bottom of the gasification bed rising pipe through a recirculating pipe. The other part of the H2 and the CaO are separated by the separator to obtain purified H2, and the separated CaO returns to the gasification reaction chamber for cyclic utilization.

The invention provides deep-sea mining valve control type clean water pump ore hydraulic lifting equipment, which consists of a material storage cabin, a clean water pump, an electric valve, a Venturi ejector, a clock valve, a hydraulic cylinder, an electromagnetic reversing valve, an ore pulp separator, a spraying pipe and a pipeline, wherein the spraying pipe is arranged in the material storage cabin, the clock valve is arranged at the upper end of the material storage cabin, the lower end of the material storage cabin is connected with the electric valve and is arranged on the Venturi ejector, the right end of the Venturi ejector is connected with the electric valve and the clean water pump, and the left end of the Venturi ejector is connected with an ore pulp hydraulic lifting pipeline. The ore pulp separator arranged on the clock valve is used for separating ore pulp, the hydraulic cylinder can be controlled through the electromagnetic reversing valve to close and open the clock valve, and the pressure differences inside and outside the material storage cabin are very great, so a pilot valve is designed in a clock valve piston. Through the control on various valves in the equipment, ores can be mixed into the hydraulic lifting pipeline from the material storage cabin to be lifted to the sea surface. The equipment provided by the invention has the characteristics that the pump lift is high, the weight is light, the flow rate is great, the long-time reliable work is realized, and the like, so the equipment has good application prospects.

The invention relates to a design method of a nuclear main pump impeller. Through controlling main geometric parameters such as the inlet diameter, and the impeller outlet diameter of the impeller, the outlet width of an impeller blade, and selecting appropriate specific speed and rotating speed, a nuclear main pump has relatively high effect under a liquid-phase condition, especially in gas phase and liquid-phase operating conditions, thus reducing the probability of nuclear safety accidents in the operating condition of water loss accidents of the nuclear main pump. The thickness of the front cover plate side of each impeller blade is about 15% smaller than the thickness of the rear cover plate side of each impeller blade, and the thickness of each blade uniformly increases from the front cover plate side to the rear cover plate side in a linear manner. The thickness of the blade gradually increases from an inlet edge to an outlet along a streamline direction, wherein the thickness of the inlet edge is about 35% that of an outlet edge; the number of blades of the impeller is 5; and the rotating speed of the nuclear main pump is above 1750r/min, and the specific speed is within 380-430r/min.

The invention provides a design method of a centrifugal charging pump guide vane of a nuclear power station. The method can meet the requirement of multiple operating points. The method is characterized in that when the charging pump guide vane is designed, geometric parameters of the guide vane and performance parameters of different operating points are associated together, so that an actual operating performance curve of a charging pump is consistent with a required performance curve of the charging pump, thus achieving the effect that the design performance curve is consistent with the required performance curve. The guide vane designed by adopting the method has the beneficial effect that the geometric parameters of the guide vane can be adjusted, thus achieving the aim that the performance of the charging pump meets the requirement of the multiple operating points. The design method can ensure the consistency between the actual operating performance curve of the charging pump and the required performance curve of the charging pump, and is particularly applicable to designs of the charging pump guide vanes having the strict requirement on the multiple operating points.

The invention belongs to the technical field of aviation and space, and particularly relates to a high pressure annular jet pump suitable for a pumping pressure type supply system. The high pressure annular jet pump comprises an inlet section pipe, a mixing section pipe, a throat pipe, a diffusion section pipe and an outlet section pipe which are sequentially arranged in the flowing direction of main fluid. The high pressure annular jet pump is characterized by further comprising step section pipes which are sequentially arranged between the inlet section pipe and the mixing section pipe; each step section pipe comprises a convergence section pipe and a straight section pipe; each straight section pipe is provided with a spraying nozzle for providing high pressure fluid. The high pressure annular jet pump is compact in structure, light in weight, good in anti-cavitation performance and capable of meeting the requirement for normal work under the working conditions of high rotating speed and low inlet pressure.

The invention relates to a borehole shaft driven pump. The scheme that a vertical three-phase asynchronous motor is used for replacing a motor dedicated for a long shaft pump is adopted; a thrust device is arranged between the motor and a pump base for bearing the weight of a pump rotation component and axial force generated when the pump rotation component is operated; the thrust device comprises parts, such as a thrust bearing, a cooling device, a backstop and the like. According to the technical scheme disclosed by the invention, the vertical three-phase asynchronous motor and an explosion-proof vertical motor which can not bear the axial force can be selected so as to widen the application range of the borehole shaft driven pump and enlarge the operation performance range of the borehole shaft driven pump. Higher power, bigger flow and higher lift can be provided, and therefore the borehole shaft driven pump has a wider power range and more application ranges, thereby being favorable for the borehole shaft driven pump to develop to the large-scale multiple ranges.