651results 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 present invention relates to a 2-step methods, and compositions for providing more vibrant, natural and long-lasting color to hair and at the same time reducing hair fiber damage associated with alternative current methods. In the first step the hair is contacted for a period of time with a dye precursor mixture containing specific oxidative hair dye precursors under conditions where these dyes are substantially inactive. Color is then developed in a second step by contacting the hair with a mixture of a peroxide compound and a persulfate salt. Surprisingly the 2-step method leads to considerable “lift” or lightening without negatively impacting the coloring ability of the oxidative dye. The invention also relates to kits providing the means to accomplish these steps.

The present invention provides methods and apparatus for reducing sinkage and wetted surface, and thus hydrodynamic drag of a high-speed boat through the generation of aerodynamic lift while decreasing overall aerodynamic drag. At least one lift-generating front wing proximate a bow section of the boat with at least one corresponding front air channel may be provided. At least one lift-generating rear wing proximate a transom section of the boat with at least one corresponding rear air channel may also be provided. At least one of the wings may be adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; and (3) a bow-lifting pitching moment about a center of inertia of the boat. At least one wing proximate the leading edge of the tunnel of a multi-hull boat may be provided to increase the operational envelope.

The invention discloses a new energy automobile electronic water pump and a control system and method. An upper shell, a middle shell and a lower shell which are detachable in a sealed manner are arranged. The upper shell and the middle shell are internally provided with ceramic rotor center shafts, a fixed cover cap and an upper shaft seat are arranged at the upper end, the lower end is fixed to the middle shell, a rotating ceramic shaft sleeve is arranged on the periphery, and the ceramic shaft sleeve, an impeller body and an impeller cover are manufactured into a whole; a rotor is formed by a ferrite magnet and a steel plate which are integrated, and is fixed to the lower plane of the impeller body; a stator and a control part are arranged in the middle shell and the lower shell; a motor driver formed by an MOS tube, a single-chip microcomputer, a fault detection part, a communication module connected with an automobile water pump controller and the like are arranged; and a starting and malfunction interrupt service and sine wave control method is provided; and the problems that a brush motor is high in energy consumption and low in efficiency are solved, structural water prevention is good, the pump is small and light and convenient to maintain, due to the cover cap, the water noise is low, and sine waves are used for driving. During running, no torque pulsation exists, the noise is low, the control method is simple and accurate, faults of temperature, voltage, current, idling, rotation blockage and the like are monitored and overcome in real time, and the aim that the water pump can still run at the higher temperature is achieved.

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 vibration and noise reduction centrifugal pump provided with bionic structures comprises a volute, a connecting shaft, a motor and an impeller. The motor is fixed to the exterior of a shell. The connecting shaft is supported on the volute and extends into the volute. The impeller comprises blades, a front cover plate and a rear cover plate. The blades are installed at the position, between the front cover plate and the rear cover plate, of the connecting shaft and are located inside the volute. The motor is in shaft connection with the impeller through the connecting shaft. A first bionic segment is arranged below a volute diffusion segment, and the contour shape of the longitudinal section of the first bionic segment is an arc toothed structure simulating the outer contour of bird wings. A starting point of the first bionic segment is located at the starting part of an isolation tongue, and an ending point of the first bionic segment extends to the position between a first section and a second section of a volute pumping chamber. The arc part of the head of the isolation tongue is provided with at least one column of raised bionic surface structures. The centrifugal pump has the advantages that the amplitude of the most intense part of internal pressure pulsation of the centrifugal pump is reduced; the flow and lift of the centrifugal pump can be conveniently, accurately and effectively enhanced, and meanwhile the hump of a centrifugal pump performance curve can be improved.

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 provides a design method, meeting requirements on multiple working condition points, for guide vanes of axial flow pumps. The design method is characterized in that during designing of the guide vanes of the axial flow pumps, geometrical parameters of the guide vanes and performance parameters of different working condition points are linked together, and actual operation performance curves of the axial flow pumps are enabled to be identical to required performance curves, so that effect that design performance curves of the pumps are coincident with the required performance curves is achieved. The geometrical parameters of the guide vanes designed by the method can be adjusted to achieve the objective that performance of the axial flow pumps can meet the requirements on the multiple working condition points. Consistency of the actual operation performance curves of the axial flow pumps and the required performance curves can be guaranteed, and the design method is especially suitable for designing of the guide vanes, with strict requirements on the multiple working condition points, of the axial flow pumps.

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 relates to an embeddable two-stage axial flow blood pump rotor structure. The embeddable two-stage axial flow blood pump rotor structure comprises a rotor head part, a rotor tail part and an impeller part, wherein the impeller part which adopts a two-stage structure design comprises a front-stage impeller and a back-stage impeller; the front-stage impeller (2) in a spiral structure has three blades; the back-stage impeller (3) is in a traditional axial flow structure; an axial distance is arranged between the front-stage impeller and the back-stage impeller; the surface curve equation of the heat part of the rotor is as follows: Formula, wherein the x is an axial distance of a hub; the y is a radial distance of the hub; and the original point is an intersection point of the surface curve of the head part of the rotor and the axial line of the hub. The embeddable two-stage axial flow blood pump rotor structure can enable the blood pump rotor to satisfy with a lift requirement at a relatively low rotating speed under the precondition that the axial size is as small as possible, thereby decreasing formation of hemolysis and reducing power consumption efficiently, and can reduce irregular flow resulted from the more complex blood pump rotor structure as the transition between the front and back impellers is corrected.

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 relates to a vane structure for weakening axial flow pump vane top leakage flow and leakage vortex. The vane structure is characterized in that an axial flow pump vane top is machined to be of a mazy structure which is in a sawtooth shape and has a certain gap, height, width, tooth numbers, tooth top angles and the like. The vane structure has the advantages that proper sawtooth size is selected, through the vane tip mazy structure of an axial flow pump, energy loss is increased when fluid passes through the vane top gap, leakage amount is lowered, accordingly, vane top leakage flow and leakage vortex are weakened, and the hydraulic efficiency and the operation stability of the axial flow pump are improved.

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 monoazo disperse blue dye and a bi-component disperse blue dye as well as a preparation method thereof. The monoazo disperse blue dye is a compound having a structural formula (I) shown in the specification. Through verification, the bi-component disperse blue dye can be applied to staining of hydrophobic fiber and blend fabric thereof such as terylene, nylon, polyurethane fiber and the like, has bright-coloured luster and is equalled to disperse blue 2BLN. Through changing the proportion of coupling components A and B in reaction raw materials, the functions of regulating the colored light of the dye and realizing synergia can be achieved so as to satisfy the requirement on different application conditions. In addition, the dye has high lifting property, favorable color fastness for washing, solarization, sublimation and the like, and has more excellent comprehensive performance than the disperse blue 2BLN. The invention has the advantages of low production cost and wide application prospect.

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 designing method of a fish-friendly axial flow pump based on fish survival rate prediction. A relation between a pump design parameter and the fish passing survival rate is predicted by adopting a mathematical model, and thus a fish-friendly design of an axial flow pump is guided. The mathematical model is mainly composed of the blade leading edge impact probability and the impact death rate; the impact probability is a ratio of the time that fishes pass through the cross section of passage of the blade leading edge and the time needed by an impeller rotating around a blade pitch; the impact death rate is relevant to the impact velocity, the fish length and the thickness of the blade leading edge; and the impact velocity adoptsa velocity component of a vertical leading edge. The fish-friendly axial flow pump design comprises the following steps: lowering the blade leading edge impact probability by adopting two blade impellers, lowering the impact death rate by adopting the blade leading edge with linear sweepforward protraction, and ensuring good hydraulic performance by virtue of airfoil parameter design. According to the designing method, a fish survival rate prediction model is high in goodness of fit to an experiment value, and the fish-friendly axial flow pump designed by guidance can greatly lower the fish death rate.

The invention relates to the field of dyestuff chemistry, in particular to a bi-component monoazo disperse blue dye composition, and adopts the technology method that the composition comprises azo disperse blue dyes (a and b), the combination molar ratio of the dye (a) to the dye (b) is 1:99 to 99:1, and the dyes (a and b) are shown in figures. The composition provided by the invention is proved to be applicable to dyeing of hydrophobic fibers such as terylene, nylon, spandex and the like as well as mixed fabric of the hydrophobic fibers, and has a stronger synergistic darkening effect; and the effects of adjusting chromatic light of the dyes and synergia can be achieved by changing the proportion of coupled components in reaction raw materials, so as to meet the requirements for different application conditions. Meanwhile, the composition has a high dye elevating property, is excellent in color fastness to water washing, solarization, sublimation and the like, is superior to disperse blue 2BLN in comprehensive performance, and has a low manufacturing cost and a wide application prospect.

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 discloses an industrial water cooling device which mainly comprises a water tank 1, a self-sucking pipeline pump 13, a water discharging station 10, a water temperature and water pressure meter 11, a water return station 9, a heat radiator 5 and a blower 8, wherein a water inlet of the self-sucking pipeline pump 13 is connected with the water tank 1 through a water discharging hose 14; a water outlet of a water pump is connected with the water discharging station 10 through a connecting pipe 12; and the water discharging station is used for providing cooling water with enough pressure and proper temperature to a plurality of equipment. After the cooling water flows through the equipment to take away heat, the water temperature is increased, hot water is gathered through the water return station 9 and is introduced into a heat radiator 5 through a connecting hose 7; the hot water flows through heat radiating fin tubes which are distributed in a S-shaped manner in the heat radiator and is assisted by the blower 8 to dissipate and cool; and the cold water obtained by cooling flows out of a water outlet of the heat radiator 5 and flows back to the water tank 1 through a water return hose 2 to finish one circulation. The industrial water cooling device does not need a refrigerant circulating system for cooling circulating water in the prior part and has the characteristics of low power consumption, high capacity, easiness in operation, simplicity, high efficiency, safety, reliability and the like.

The invention provides a method for designing a hydraulic model of a blade front bent type circulating booster pump. The pump is suitable for the fields of building water supply, fire control, solar energy and the like. The hydraulic model of the pump comprises an impeller and an annular flow channel, the geometric dimension parameters of the impeller and the annular flow channel and the performance parameters of the design operating points of the circulating booster pump are related through a relational expression, and several relational expressions are given to determine the main geometric dimension parameters of the impeller and the annular flow channel. The main geometric dimension parameters comprise the outer diameter D2 of the impeller, the inclination angle phi of the inlet edge of the impeller, the width b3 of the annular flow channel, the outer diameter D3 of the annular flow channel, the outer diameter D4 of an impeller rear cover plate, the placing angle beta of a working face outlet of the impeller and the placing angle theta of a flow channel insulation tongue. The circulating booster pump designed through the method has the advantages of being large in flow quantity, high in lift, stable in outlet voltage supply, compact and reliable in structure, and particularly suitable for fluid conveying occasions under the condition of narrow space.