24results about How to "Improve the flow field" patented technology

The utility model discloses an electromagnetic stirring tundish impact area guard plate which is composed of a left guard plate and a right guard plate, the sides, close to molten steel, of the left guard plate and the right guard plate are the outer sides, the sides, away from the molten steel, of the left guard plate and the right guard plate are the inner sides, and the included angle A between the outer side plate faces of the left guard plate and the right guard plate and the horizontal plane is smaller than 90 degrees; each of the left protective plate and the right protective plate comprises a head-section protective plate, a first arc-shaped transition connecting section, a middle-section protective plate, a second arc-shaped transition connecting section and a tail-section protective plate; one end of the first arc-shaped transition connection section is connected with the head section protection plate, the other end of the first arc-shaped transition connection section is connected with the middle section protection plate, one end of the second arc-shaped transition connection section is connected with the middle section protection plate, and the other end of the second arc-shaped transition connection section is connected with the tail section protection plate; mounting grooves are formed in the outer side faces of the head section protection plates in the longitudinal direction, and the left protection plate and the right protection plate are connected with connecting pieces located between the head section protection plate of the left protection plate and the head section protection plate of the right protection plate in a clamped mode through the mounting grooves respectively. The induction coil can be protected in the impact area, the molten steel flow field in the tundish impact area is improved, and molten steel scouring is relieved.

The utility model provides a fan shell assembly and a range hood comprising the same, a fan shell comprises a front cover, a rear cover and an annular wall, the front cover and the rear cover are provided with through holes along the axial direction of the fan shell, and two sides of the annular wall are connected with the front cover and the rear cover to form a smoke exhaust channel. A cavity surrounded by the smoke exhaust channel and used for containing the fan and the impeller is further arranged in the fan shell, a smoke inlet of the fan for sucking smoke is located on one side of the front cover, and at least one protruding part outwards in the radial direction of the annular wall is arranged on the annular wall. The wall surface, close to the rear cover, of the annular wall is provided with at least one bending plane which inclines inwards in the radial direction of the annular wall. According to the fan shell assembly and the range hood comprising the fan shell assembly, the outward protruding part and / or the inward bent plane are / is arranged on the annular wall, so that an annular wall structure with a variable cross section is formed, a flow field in a fan shell is improved, airflow impact is reduced, airflow stability is improved, noise is reduced, and a user has better use experience.

The invention discloses a marine empennage, which relates to the technical field of ships, and comprises a ship shell of a wave-shaped flat bottom structure, and the upper end of the ship shell is fixedly connected with a deck used for covering the space in a ship and horizontally dividing the space into layers; the side, close to a deck, of the hull is fixedly connected with a cabin used for storing materials and allowing sailors to work and live, the outer wall of the side, away from the cabin, of the hull is fixedly connected with an empennage plate body used for keeping course stability and providing rotation or trim adjusting capacity, and dynamic wingspan expansion mechanisms are arranged on the two sides of the upper end of the empennage plate body. An arc wing guide swing mechanism is arranged at the center of the upper end of the empennage plate body, a trapping screen wing mechanism is arranged on one side of the tail end of the empennage plate body, plate wings and an electric telescopic rod are matched with each other, and the stress area of the empennage can be increased by improving the sailing performance and expanding the wingspan; therefore, larger lift force is generated under the condition of the same wind speed or water flow.

The invention relates to the technical field of nuclear fuel assembly design, and particularly discloses a foreign matter capturing unit, a foreign matter capturing structure and a nuclear fuel lower pipe seat, the foreign matter capturing unit comprises a separation plate, and a lower guide seat and an upper guide seat which are respectively fixed at the lower end and the upper end of the separation plate; the separating plate is vertically arranged, the two sides of the lower guide base extend outwards to form a lower base outer arc guide face and a lower base inner arc guide face respectively, and the two sides of the upper guide base extend outwards to form an upper base inner arc guide face and an upper base outer arc guide face respectively. A first foreign matter capturing space is defined by the lower base outer arc guide face, the separation plate and the lower guide base. The guide surface of the foreign matter capturing unit adopts the arc-shaped upstream face, so that the local hydraulic loss in the coolant circulation process is effectively reduced, and a better coolant flow field is ensured.

The utility model provides a wear -resisting anticorrosion dispersion disc structure, including dispersion disc base, the dispersion disc base top center position fixedly be equipped with the central connecting axle, the central connecting axle outer end surface fixedly be equipped with a plurality of annular array distribution's main dispersion tooth, dispersion disc base bottom fixedly be equipped with a plurality of annular array distribution's oblique dispersion vane, oblique dispersion vane is inclined. This scheme has realized high hardness and excellent chemical corrosion resistance through the single layer, dense, high -performance alloy coating of covering all key work surface, has realized high -efficient multistage dispersion and uniform mixing of material, has promoted product quality and production efficiency through the synergistic effect of main dispersion tooth, oblique vane, deflector and optional superposition disc subassembly simultaneously, produced strong impact, shear, axial circulation and complex turbulence.

The invention belongs to the technical field of aircraft environment control, and discloses a high-pressure-ratio and high-rotating-speed centrifugal compressor impeller and vaned diffuser joint optimization design method, which comprises the following steps of: calculating by using a one-dimensional theory according to a compressor design index to obtain basic geometric parameters of a compressor impeller and a vaned diffuser; the method comprises the following steps: respectively selecting an initial blade root molded line, a blade middle molded line and a blade tip molded line as design optimization objects, and connecting from a blade root to a blade tip by using a smooth curve; according to the scheme, the initial blade molded line and the diffuser guide blade molded line are optimized, complete impeller and vaned diffuser models are obtained, performance calculation is conducted on the obtained N compressor models, and a combination with the optimal efficiency and the optimal pressure ratio is selected as the final scheme of the impeller and the diffuser of the compressor. By means of the design method, the designed impeller can adapt to the flow change of the gas compressor in a large range, so that the operation stability of the gas compressor is improved, and the surge margin of the gas compressor is widened.

The utility model discloses a multichannel heat dissipation casing structure of inflator pump, concretely relates to inflator pump technical field, including the shell, is provided with the inflator pump main part outside the shell, and the output fixedly connected with the air outlet pipe of inflator pump main part, the top fixedly connected with two positioning frame of shell, the fixedly connected with the handle of positioning frame inboard, handle inboard and air outlet pipe outside sleeve joint, the fixedly connected with two supports of inflator pump main part bottom, the fixedly connected with the bottom plate of support lower surface, the fixedly connected with a plurality of cushion block of bottom plate bottom, the fixedly connected with the air intake mechanism of bottom plate inboard, the top is provided with the heat dissipation mechanism of shell. The utility model utilizes a plurality of trapezoidal air inlet cover to accelerate airflow flow and enhance the penetrating power, improve internal air flow field, reduce ventilation resistance, combine top inclined top cover, heat conduction fin and opening design simultaneously, effectively discharge hot air, avoid heat accumulation, optimize the heat dissipation air duct, realize uniform heat dissipation, maximize the fan air volume and reduce airflow waste.

The utility model provides a replaceable plate bundle unit full welding plate type gas-gas heat exchanger, a plurality of single plate bundle units respectively constitute high temperature plate bundle unit and low temperature plate bundle unit, and the high temperature plate bundle unit and low temperature plate bundle unit are sealedly installed on the support bottom pry in proper order, and the lower part of the support bottom pry is connected with the bottom connection header; the hot side import header, hot side export header are sealedly installed in the upper portion of high temperature plate bundle unit and low temperature plate bundle unit respectively; the cold side import header, cold side export header are sealedly installed in the end of high temperature plate bundle unit and low temperature plate bundle unit, and the outside of high temperature plate bundle unit and low temperature plate bundle unit is sealedly connected with the outer pressure plate, in the utility model, if single plate bundle unit occurs corrosion or premature failure damage, single plate bundle unit can be replaced on the spot, and the subsequent maintenance cost of equipment is reduced, and simultaneously through setting the flow guide plate, gas scale is reduced, the flow characteristics of gas medium in the heat exchanger is strengthened, heat exchange efficiency is increased, and long period stable operation of equipment is ensured.

The present invention discloses a multi-zone coupled high-efficiency dust removal dry-type electrostatic precipitator, the dry-type electrostatic precipitator comprises an inlet horn, a cover body and an outlet horn, a plurality of electric fields are sequentially arranged inside the cover body, an anode plate and a cathode wire are arranged inside each electric field, dust collecting grids are arranged inside the inlet horn and the outlet horn, the dust collecting grids are formed by evenly arranged multiple groups of bent grids, multiple groups of bent grids are arranged along the flue gas direction, and the upper and lower ends of each group of grids are installed in the inlet horn and the outlet horn through a vibrating frame. The multi-zone coupled high-efficiency dust removal dry-type electrostatic precipitator of the present invention optimizes the existing electrode plates, electrode wires, inlet and outlet horn smoke boxes, flow fields and other aspects of the electrostatic precipitator, which can improve the capture efficiency of smoke, reduce secondary dust, and further reduce the smoke concentration at the outlet of the electrostatic precipitator; the multi-zone coupled high-efficiency dust removal dry-type electrostatic precipitator of the present invention has low investment, does not occupy space or occupies a small space, has low resistance, low energy consumption, and significant efficiency improvement effect.

This invention relates to the field of medical blood purification equipment technology, and discloses a lipid adsorption material regeneration device, including a main body, a rotary switching module, an adsorption column module, a dynamic pressure balancing system, a fluid pipeline system, and a main controller. The rotary switching module drives the adsorption column module to switch between three stations: treatment, regeneration, and balancing preparation. The adsorption column module is filled with pH-responsive hydrogel material to achieve adsorption and regeneration functions. The dynamic pressure balancing system forms a magnetic circuit through a magnetic piston and electromagnetic drive components in a bypass pipe, which senses and adjusts the pressure inside the column in real time. The fluid pipeline system controls the connection of input and output connectors via an electric push rod to achieve fluid switching. The main controller integrates data from multiple sensors, including pressure, pH, and optical sensors, to intelligently terminate the regeneration process. This invention achieves in-situ online regeneration of the adsorption material, continuous uninterrupted treatment, and precise closed-loop control, improving treatment efficiency and safety, and significantly reducing consumable costs.

The invention discloses an ion exchange device for removing heavy metals from oyster peptides, and belongs to the technical field of continuous electric regeneration ion exchange. It comprises a lifting base frame and a dialysis chamber fixedly installed on the upper surface of the lifting base frame, a positive power generator is fixedly installed at one end position of the outer surface of the dialysis chamber, and a negative power generator is fixedly installed at the other end, a resin mixed adsorption chamber is provided at the middle position inside the dialysis chamber, an anion exchange membrane assembly is inserted and installed on the side of the resin mixed adsorption chamber facing the positive power generator, and a cation exchange membrane assembly is inserted and installed on the side of the resin mixed adsorption chamber facing the negative power generator, and two groups of cleaning reagent storage modules are arranged at the intersection of the anion and cation exchange resin chambers to store chemical cleaning reagents of different properties respectively, so that corresponding chelating agents can be configured for organic pollutants adsorbed on the anion resin.

The utility model discloses a high efficiency's fierce fire staggered floor combustion system of upper air inlet, include: furnace head subassembly, furnace base, blast box, air blower and fierce fire air outlet structure, blast box and air blower set up in the below of range panel, the blast outlet of fierce fire air outlet structure is located the above of range panel, towards the injection port of injection channel, blast box is equipped with the blast connecting port of connecting fierce fire air outlet structure, and air blower can send air through blast box to the blast outlet of fierce fire air outlet structure, the utility model discloses, break through upper air inlet space limit, realize efficient blast, the core innovation is in the ingenious adoption " blast source lower -positioned, air -supply path up -going, air -out point upper -positioned " split type design. Through special fierce fire air outlet structure, air is accurately delivered to the injection channel injection port near the above of range panel, realizes the core function of forced air supply. This design perfectly adapts the structural characteristics of all upper -positioned of upper air inlet burner injection system.

The utility model discloses a double-layer combined flue gas distribution volute core, which belongs to the technical field of flue gas distributors and comprises a gas inlet pipe and a double-layer flue gas treatment component mounted in the gas inlet pipe. When the device is used, the replacement assembly arranged on the flow guide plate can drive a first bevel gear and a second bevel gear to be in meshing transmission by rotating a grip in an equipment running state by utilizing a mounting disc, a fixed frame and a magnetic attraction structure, so that quick replacement of a medium block is realized, the tedious operation of stopping, reducing pressure and supplementing a medium is avoided, and the working efficiency is improved. Meanwhile, the fan blades on the inner wall of the mounting frame and the conical mixing cover act synergistically, so that a flue gas flow field is optimized, direct scouring of high-speed airflow to a medium block is reduced, the service life of a medium is prolonged, and the consumption speed is reduced; the equipment does not need to be frequently started and stopped, the mechanical wear of the pipeline and the volute core part is greatly reduced, the maintenance cost of the equipment is effectively reduced, and the efficient, stable and economical operation of the flue gas pretreatment process is realized.

The invention provides a leachate lift pump system with a multi-stage dynamic filtration and anti-blocking structure and a control method, and the leachate lift pump system comprises a reverse rotation cutting mechanism, a first-stage coarse filtration device, a forward crushing mechanism, a second-stage precise filtration device, a vortex centrifugal separation device and a main driving unit which are sequentially arranged in the leachate lifting direction, the main driving unit drives a main pump impeller of the leachate lifting pump system and a forward crushing mechanism coaxially connected with the pump impeller to rotate through a main pump motor; the percolate lift pump system further comprises a vibration monitoring module, viscosity monitoring modules arranged at the pump inlet of the main pump and the percolate flow channel, pressure difference monitoring modules arranged at the filtering devices, a flow monitoring module arranged at the pump outlet of the main pump and a liquid level monitoring module arranged at the percolate collecting pool. The vortex centrifugal separation device is used for separating solid substances and liquid substances of the percolate through centrifugal force of flowing of the percolate; the device is provided with a bionic anti-blocking conveying structure, has a screening and separating function, and can realize efficient multi-stage dynamic filtering and crushing.

The invention relates to a centrifugal fan component, in particular to a fan impeller structure which comprises an impeller disc, a cover plate and a plurality of blades arranged between the impeller disc and the cover plate. The cover plate covers the upper end of the blade, and the blade is provided with a radial inner part exposed from the inner edge of the cover plate; notches for increasing flow are concavely formed in the upper edges of the radial inner parts of at least part of the blades, so that the blades and the other blades are arranged in a high-low manner. The impeller is simple in structure, low in cost and easy to implement, the notches are formed in the upper edges of part of the arc-shaped blades to form a blade combination structure which is alternately arranged in a high-low mode, an air channel is optimized, a good flow guiding effect is provided, the impeller gas flow field is effectively improved on the premise that the diameter size of the impeller is kept unchanged, and the impeller efficiency is improved. The purposes of improving the air volume and efficiency of the centrifugal fan are achieved.

The utility model discloses a large electric dust collector flow field improving device which comprises an electric dust collector inlet end socket, a flow guide mechanism, a flow equalizing plate I, a flow equalizing plate II and a flow equalizing plate III, and the flow guide mechanism, the flow equalizing plate I, the flow equalizing plate II and the flow equalizing plate III are sequentially arranged in the electric dust collector inlet end socket in the flue gas flow direction. The flow guide mechanism comprises two transverse flow guide plates and two longitudinal flow guide plates, the longitudinal flow guide plates and the transverse flow guide plates are arranged in a crossed mode to form a plurality of flow guide holes, the two transverse flow guide plates are symmetrically arranged, and the distance between the smoke airflow facing ends is smaller than that between the smoke airflow back ends. Compared with the prior art, the dust removal device has the advantages that the dust removal efficiency can be improved, the service life of equipment can be prolonged, the energy consumption can be reduced, and the operation safety and stability of the equipment can be improved.

The invention discloses a modularized air supply device and a working method, and relates to the technical field of air supply devices.The modularized air supply device comprises a shell and a pair of air valve mechanisms, a main air inlet is formed in the position, close to the center, of one side of the shell, a pair of air outlets is formed in the bottom end of the main air inlet, a fan air inlet is formed in the bottom end of the shell, and a fan is installed on the fan air inlet; the pair of air valve mechanisms is arranged on the shell. The independent air valve mechanism composed of the electric adjusting valve, the transmission mechanism and the blades is arranged at the air outlets in a matched mode, the electric adjusting valve can receive analog quantity signals to achieve 0-100% continuous accurate adjustment, the complementary control logic of the air valves on the two sides is matched, the air supply amount of each air outlet can be independently adjusted and controlled, the problem of air amount imbalance is solved, and the service life is prolonged. And one-zone-one-strategy zoned air supply according to needs is achieved, and the differentiated ventilation requirements of different process zones are met.

The utility model belongs to the technical field of water electrolysis hydrogen production equipment, and discloses a novel large alkaline water electrolysis hydrogen production electrolytic bath of a flow field runner, which comprises a cylindrical bath body, a left end pressing plate and a right end pressing plate are respectively arranged at two ends of the bath body, a middle polar plate is arranged in the middle of the bath body, a left end polar plate is arranged between the middle polar plate and the left end pressing plate, and a right end polar plate is arranged between the middle polar plate and the right end pressing plate. A right end polar plate is arranged between the middle polar plate and the right end pressing plate; the middle polar plate and the left end polar plate form a cylindrical left half groove, and the middle polar plate and the right end polar plate form a cylindrical right half groove; a two-way gas-liquid runner hole groove and a radial alkali liquor hole channel which are communicated with the left half groove and the right half groove are formed in the middle polar plate; inner cavity hole grooves and radial holes are formed in the left end polar plate and the right end polar plate; according to the utility model, the gas-liquid resistance in the runner can be quickly and effectively reduced, the alkali liquor circulation efficiency can be improved, and the internal temperature uniformity and the electrolysis efficiency of the electrolytic bath are ensured.

The application provides a multi-chamber transparent electrolytic tank for alkaline electrolytic water, and relates to the field of electrolytic tanks.The adopted scheme is: comprising: an anode end plate assembly, the anode end plate assembly comprises an anode end plate and an anode conductive ring, the anode end plate adopts transparent and non-conductive material; a cathode end plate assembly, the cathode end plate assembly comprises a cathode end plate and a cathode conductive ring, the cathode end plate adopts transparent and non-conductive material, and a tension bolt is penetrated between the cathode end plate and the anode end plate; a composite electrode plate is arranged between two adjacent electrolytic chambers, the composite electrode plate comprises an anode electrode frame and a cathode electrode frame, the anode electrode frame and the cathode electrode frame adopt transparent and non-conductive material, and a conductive plate is arranged between the anode electrode frame and the cathode electrode frame.The application can directly observe the change of the internal flow field and the electrode from the end and the peripheral part.

The utility model relates to the technical field of fluidized bed boilers, and discloses a circulating fluidized bed boiler with a high-temperature separation function, which comprises a hearth, a boiler barrel device, an air distribution device, a separator, a return feeder and a tail flue, the separator adopts a high-temperature cyclone separator design, an inlet of the separator is in an inclined and tapered form, a central barrel is arranged at the top of the separator, and the tail flue is arranged in the central barrel. An inlet is formed in the left side of the separator. According to the utility model, by optimizing the design of the high-temperature cyclone separator, the separation efficiency is improved to more than 99.5%, the fine ash share is increased, the flow rate of a flue gas inlet is effectively improved, the speed of external swirling air flow is increased, and the air flow field is optimized, so that the separation efficiency is obviously improved; according to the bell jar type coal-leakage-free air cap, through multi-dimensional innovation and optimization of the structure, the material, the air distribution performance, the maintainability and the like, the operation efficiency and stability of the boiler are remarkably improved, meanwhile, the maintenance requirement is reduced, and a guarantee is provided for safe and efficient operation of the circulating fluidized bed boiler.

The utility model discloses an electromagnetic stirring tundish working layer protective plate which is composed of a left protective plate and a right protective plate, and each of the left protective plate and the right protective plate comprises a head-section protective plate, a first arc-shaped transition connecting protective plate, a middle-section protective plate, a second arc-shaped transition connecting protective plate and a tail-section protective plate. One end of the middle-section protective plate is connected with the head-section protective plate through a first arc-shaped transition connecting protective plate, and the other end of the middle-section protective plate is connected with the tail-section protective plate through a second arc-shaped transition connecting protective plate; from the upper end face to the lower end face, the head-section protection plate and the middle-section protection plate are each composed of a slag line part and a molten pool part, the tail-section protection plate is composed of a slag line part, a molten pool part and an abutting part, the thickness of the slag line part is larger than that of the molten pool part, and the thickness of the abutting part is larger than that of the molten pool part and smaller than or equal to the maximum thickness of the slag line part; and the side vertical surface of the tail-section protecting plate of the left protecting plate is butted with the side vertical surface of the tail-section protecting plate of the right protecting plate to form the working layer protecting plate of the electromagnetic stirring tundish. The utility model can improve the molten steel flow field in the tundish, prolong the service life and ensure the safe smelting of the electromagnetic stirring tundish.

The present invention discloses a support structure of a tray support beam of an absorption tower, comprising an absorption tower shell, a plurality of main support beams, a plurality of first auxiliary support beams and a plurality of second auxiliary support beams connected to the inner wall of the absorption tower shell, the two ends of the main support beam are fixedly connected to the inner wall of the absorption tower shell, one end of the first auxiliary support beam is fixedly connected to the inner wall of the absorption tower shell, the other end of the first auxiliary support beam is fixedly connected to the main support beam, the second auxiliary support beam is arranged between the plurality of main support beams, the two ends of the second auxiliary support beam are fixedly connected to two adjacent main support beams, the upper surfaces of the main support beam, the first auxiliary support beam and the second auxiliary support beam are provided with a plurality of first trays and a plurality of second trays, the outer wall of the absorption tower shell is provided with a flue gas inlet, and the flue gas inlet is arranged horizontally and parallel to the main support beam. The present invention also discloses an operation method. The present invention increases the flow field effect, improves the tray fastening effect, increases the rigidity of the tray support, is conducive to corrosion prevention, reduces the amount of steel materials, and saves costs.

The invention discloses a cavity type bypass double-throat pneumatic thrust vectoring nozzle driven by a single component and a control method thereof, the nozzle comprises a main flow channel and a bypass, the main flow channel is internally provided with a nozzle inlet, a first convergent section, a nozzle first throat, a nozzle expansion section, a nozzle second convergent section and a nozzle outlet in sequence along the airflow direction; a bypass secondary flow inlet, a bypass valve, a self-adaptive bypass cavity and a bypass secondary flow outlet are sequentially arranged in the bypass in the airflow direction. The first convergence section is provided with a special-shaped flow guide plate assembly, and the special-shaped flow guide plate assembly is composed of two special-shaped plates which are symmetrically arranged up and down; the special-shaped plate is connected with the inner side of the outer wall face of the spray pipe through a hinge and can rotate around the hinge to adjust the flow area of the first throat of the spray pipe. In the aspect of flow control, only a single set of components are used for active control, the complexity of flow matching control is reduced, and in addition, through the configuration design of the first convergence section and the special-shaped plate assembly, the problems of overtemperature and flow stability in a bypass cavity are solved to a great extent.

This invention provides a biomimetic near-space vehicle wing modification design method, comprising the following steps: obtaining the wing chamber structure on the surface of a dragonfly wing and the folded corrugated structure on the cross-section of the dragonfly wing; designing a biomimetic wing chamber structure based on the wing chamber structure on the dragonfly wing surface; smoothly connecting the extreme points of the folded corrugated structure of the dragonfly cross-section to obtain a biomimetic wing cross-sectional structure; fabricating the wing based on the biomimetic wing cross-sectional structure, and arranging the biomimetic wing chamber structure at a position before the initiation point of boundary layer transition on the wing surface. This biomimetic near-space vehicle wing modification design method, by designing a biomimetic modified wing based on the cross-sectional structure and wing chamber structure of a dragonfly wing, and by arranging a suitable dragonfly-inspired wing chamber structure on the wing, controls the initiation position of boundary layer transition on the wing surface, prompting the boundary layer to transition to a turbulent boundary layer earlier, thus making the wing surface boundary layer more stable.