14results about How to "Improve flow field distribution" patented technology

The utility model discloses a hot air distributor for desulfurization waste water zero discharge and flue gas purification system, which comprises a flue gas inlet volute and a flue gas inlet distributor arranged at the bottom of the flue gas inlet volute, a flue gas inlet is arranged on the flue gas inlet volute, a flue is arranged in an inner cavity of the flue gas inlet volute along the path of the flue, and the flue gas inlet distributor is arranged on the flue gas inlet volute. Two guide pieces are arranged on the inner wall of the flue, a smoke outlet communicated with the flue is formed in the inner side wall of the bottom of the smoke inlet volute, the smoke inlet distributor comprises an inner cone, and the inner cone is provided with a heat insulation measure. According to the utility model, air or flue gas is uniformly distributed through the inlet flue gas distributor, so that good gas flow field distribution is realized when the air or the flue gas enters a container, the phenomenon of non-uniform gas distribution of the existing gas distributor is avoided, and the air is uniformly distributed through the two stages of guide vanes after entering the inlet flue gas distributor; the first guide vane ensures the uniformity of gas entering the second guide vane, and the second guide vane enables the air to form a swirling flow field given by design after entering the container through angle design.

The invention provides a wet etching groove with a special shape and application thereof in wet etching equipment. The groove type wet etching equipment comprises an etching groove, a wafer support used for bearing wafers and a liquid inlet pipeline used for injecting etching liquid into the etching groove. The shape of the etching groove is obtained by symmetrically trimming and deforming the front side and the rear side of the top and the bottom of the cuboid etching groove, and the length of the deformed etching groove with the special shape is gradually reduced from the middle to the top end and the bottom end in the vertical direction. According to the invention, the flow velocity of the etching liquid on the surface of the wafer can be improved, and the flow field distribution is improved, so that the uniformity of wet etching is improved, and the product yield is improved.

The application provides a coiled tube heat exchanger using spherical clamping strips to fix tube bundles, and belongs to the technical field of heat exchange equipment, and comprises a central cylinder and a plurality of clamping strips with spherical protrusions arranged on the outer wall of the central cylinder. The upper surface of the clamping strip is provided with a spherical protrusion structure, and adjacent spherical protrusions constitute a heat exchange tube positioning element. The spacing between the spherical structures is optimized to match the arrangement of the tube bundles, and the outer surface of the central cylinder is wound with heat exchange tubes. The clamping strip with the spherical protrusion adopts a reverse stamping process in the manufacturing process, so that the processing surface is located on the non-contact side of the heat exchange tube, effectively avoiding direct friction damage of the processing defects to the tube wall. The spherical streamline structure reduces the turbulence intensity when the shell side fluid flows around, effectively reduces the shell side pressure drop while ensuring the positioning accuracy of the heat exchange tube, and improves the heat transfer efficiency of the heat exchanger. The clamping strip with the spherical protrusion omits the independent welding area required by the traditional tube clamp, thereby reducing the material consumption of the clamping strip.

The invention specifically discloses a liquid cooling plate, a battery pack and a vehicle, the liquid cooling plate comprises a cooling plate body, the cooling plate body is internally provided with a plurality of parallel main flow channels which are communicated in sequence, each main flow channel comprises a plurality of sub flow channels which are mutually independent and connected in parallel, and every two adjacent main flow channels are communicated through a circulation opening; every two adjacent sub-runners are communicated through a liquid flow port, at least part of the liquid flow ports are located at the inlet end of the main runner, and in at least part of the main runner, the flowing sectional areas of the multiple liquid flow ports located at the inlet end of the main runner are gradually reduced in the direction away from the flowing ports. The liquid cooling plate disclosed by the invention can optimize the flow field distribution of the internal flow channel and improve the heat exchange efficiency of the liquid cooling plate.

The invention discloses a temperature adjusting system which comprises a vortex tube refrigerating assembly, a heater, a temperature control environment box, a heat regenerator and a gas pipeline. A first flow path and a second flow path are arranged on the gas pipeline in parallel, the first flow path is directly communicated with the gas inlet end and the gas outlet end of the gas pipeline, the second flow path is arranged in the heat regenerator in a penetrating mode, and a valve set for controlling the first flow path and the second flow path to be connected and disconnected is arranged on the gas pipeline. A parallel double-flow-path structure capable of being mechanically switched is innovatively arranged in a gas pipeline, so that the system can be flexibly selected between two efficient working modes: when a first flow path is selected, gas of a gas source directly enters a temperature adjusting unit, and the system runs at the maximum cooling rate; when the second flow path is selected, the gas firstly flows through the heat regenerator, exchanges heat with low-temperature exhaust gas from the temperature control environment box to be pre-cooled, and then enters the temperature adjusting unit, so that the refrigeration temperature limit is broken through on the premise that the gas source load is not increased, and the energy efficiency is improved.

The application provides a kind of along empty roadway to keep lane goaf gas flow field dynamic balance regulation and control method and system, belong to coal mine technical field.The method comprises: when the real-time acquisition of multi-source monitoring data does not satisfy the preset dynamic balance condition, the gas flow field of the current target goaf under different working condition variables is simulated by a flow field simulation model, the influence law of different working condition variables on the multi-physical field space characteristics of the current target goaf is determined, the key air leakage channel of the current target goaf and the regulation and control node for regulating and controlling the key air leakage channel are identified;Based on the identified key air leakage channel and regulation and control node, according to the spatial regulation and control sequence from the surface to the end of the roadway, a coordinated regulation and control scheme is generated and executed;When the multi-source monitoring data of the target goaf in the coordinated regulation and control process meets the preset dynamic balance condition, stop executing the current coordinated regulation and control scheme.The purpose of multi-dimensional coordination, accurate and efficient goaf gas flow field dynamic balance multi-point regulation and control is achieved.

This invention relates to the field of fuel cell technology and discloses a fuel cell heat dissipation system and control method for active balancing heat dissipation in unmanned aerial vehicles (UAVs). The fuel cell heat dissipation system includes a UAV heat dissipation assembly and an active balancing control subsystem. The UAV heat dissipation assembly includes a liquid cooling circuit and rotors disposed at the tips of multiple heat dissipation arms. The liquid cooling circuit includes coolant channels disposed inside the multiple heat dissipation arms. The coolant channels include in-arm liquid inflow pipes and in-arm liquid return pipes. Multiple in-arm liquid inflow pipes are arranged close to the inner side of the heat dissipation arms, and the multiple inflow pipes converge at the tips of the heat dissipation arms and connect to the in-arm liquid return pipes. The inflow pipes have an S-shaped variable diameter pipe structure, and their arrangement density gradually decreases from the root to the tip of the heat dissipation arm. The active balancing control subsystem includes a sensor group, an actuator group, and a controller. This invention can improve the reliability and flight safety of the UAV thermal management system.

The utility model discloses a convenient access type glue storage tank for solventless polyurethane adhesive production, including glue storage tank, the lower extreme of glue storage tank is connected with the conical delivery cover, the lower extreme of conical delivery cover is connected with the delivery structure, the upper end of glue storage tank is installed with the scraping glue mechanism, the lower extreme one side of conical delivery cover is connected with nitrogen gas delivery mechanism, the lower extreme other side of conical delivery cover is connected with the circulating mechanism, the delivery structure includes the drain pipe of connecting in the middle part of the lower extreme of conical delivery cover, install the heater on the drain pipe, nitrogen gas delivery mechanism includes the nitrogen gas delivery pipe of connecting in the lower extreme one side of conical delivery cover, one side of glue storage tank is equipped with the nitrogen gas storage jar. The utility model reduces the colloid adhesion, is easy to clean and peeling, can promote the efficiency of taking out simultaneously, can also adapt to the filler system of different sedimentation speed, improves the storage quality, in addition can greatly reduce raw material consumption, reduces the cost, has strengthened the practicality.

The application discloses a bogie bottom drag reduction cladding plate and a high-speed train bogie, and the cladding plate comprises a torsion bar cladding plate for cladding a torsion bar of a bogie frame, a first cladding plate for connecting a cross beam on one side of the torsion bar, and a second cladding plate for connecting a cross beam on the other side of the torsion bar. The first cladding plate and the torsion bar cladding plate form a first flow guide slope, the second cladding plate and the torsion bar cladding plate form a second flow guide slope, and the flow guide directions of the first flow guide slope and the second flow guide slope are symmetrically arranged. The application guides the airflow originally acting on the region near the center pin hole and the torsion bar to the lower side of the torsion bar cladding plate, optimizes the partial cladding and flow guide of the originally complex and abrupt bottom profile near the center pin hole and the torsion bar, forms a relatively continuous bottom flow guide surface, weakens the direct interference between the airflow and the complex components of the bottom, reduces the local flow separation, backflow and vortex intensity, improves the bogie bottom flow field distribution, and further achieves the purpose of reducing the aerodynamic drag of the bogie region.

The utility model provides a neck hanging fan which comprises a neck wearing part and an air supply mechanism connected to the two ends of the neck wearing part, the air supply mechanism comprises a shell and a fan, the shell comprises an air outlet facing the neck of a human body, and an air supply cavity suitable for installing the fan and an air channel suitable for guiding airflow to the air outlet are formed in the shell. The air channel comprises at least one streamline inner side face which is a smooth and continuous curved face, the end, close to the air supply cavity, of the air channel is a first air supply section which is in butt joint communication with the air supply cavity through a communication opening, and the end, close to the draught fan, of the streamline inner side face participates in forming the first air supply section and has the trend of protruding outwards. The first air supply section is suitable for slow flow guide. Flow field distribution in the air channel is optimized by arranging the streamline inner side face, vortexes are reduced, resistance is reduced, local high air speed is reduced by arranging the first air supply section which tends to protrude outwards for slow flow guide, speed change is more stable, speed distribution is even, noise at the first air supply section, namely the highest flow speed position, is lowered, and noise reduction is facilitated. And user experience is improved.

This disclosure relates to the field of pharmaceutical equipment technology. One embodiment of this disclosure provides an air jet mill with a collection structure for pharmaceutical use, comprising: a separation tank, an exhaust port, a pulverizer, and a connecting pipe. The exhaust port is located at the top of the separation tank, the connecting pipe is located on the pulverizer, the pulverizer is connected to the bottom of the separation tank through the connecting pipe, the discharge pipe is located at the bottom of the separation tank, and a collection and discharge assembly is located inside the separation tank and the discharge pipe. The separation assembly is located at the top inside the separation tank and includes an inner frame, which is fixed inside the separation tank and extends to the outside of the separation tank at one end. A rotating shaft is rotatably connected to the bottom of the inner frame. This technical solution solves the technical problem in the prior art where non-integrated collection systems result in long material transport paths and easy retention of fine particles on the inner wall of the pipe. Especially when processing viscous or hygroscopic drugs, the retained material may absorb moisture and clump, affecting subsequent collection efficiency and powder purity.

The utility model belongs to the technical field of vortex pump hydraulic design relates to a vortex pump's impeller structure, including pump body and impeller, the pump body includes water inlet, water outlet, snail room flow channel and pump end, the impeller includes wheel disc and blade, the impeller sets up in pump end, its blade bottom protrudes into the snail room flow channel of pump body, the structural design of impeller satisfies following condition: b2: the numerical range of D2 is 0.2 0.24, L: the numerical range of D2 is 0.33 0.41, wherein, b2 is the height of impeller blade, D2 is the outer diameter of impeller, L is the vertical distance of blade bottom end to water inlet. The vortex pump's impeller structure provided by the utility model can improve the hydraulic performance of vortex pump, shorten the development cycle and save the development cost.

The invention discloses a capillary liquid supply electrolytic bath module and an electrolytic bath, and belongs to the field of water electrolysis hydrogen production. The electrolytic cell module comprises a plurality of electrolytic cell small chambers, wherein each electrolytic cell small chamber comprises an anode plate, an anode electrode, a diaphragm, a cathode electrode, a sealing gasket and a cathode plate which are sequentially stacked; water replenishing ports are formed in corresponding positions of the anode end plate, the cathode end plate, the anode plate, the cathode plate and the sealing gasket, a diaphragm mounting groove is formed in one side of the anode plate, a diaphragm is mounted in the diaphragm mounting groove, and a first flow field area is arranged in the diaphragm mounting groove; and a capillary tube through hole is further formed in the diaphragm mounting groove, and electrolyte entering from the water replenishing port enters the diaphragm through the capillary tube through hole and is self-sucked to a set height by the diaphragm. According to the invention, the uniformly distributed capillary tube through holes are adopted for feeding liquid, and the mode that the diaphragm is self-sucked to a set height is matched, so that the electrolyte consumption is low, stable and uniform liquid supply can be realized, and the continuous electrolysis process is ensured.

The utility model relates to the technical field of floatation machine impeller, disclose a double -bladed structure's floatation machine impeller, including base, the outside fixed mounting of base is used for the bearing of connection, and the inside sliding connection of base has first mounting rod, and the right -hand member of first mounting rod is provided with fixed assembly, the bottom of first mounting rod rod body is opened to have the mounting hole, just the inside insertion of mounting hole has second mounting rod, the upper end rod body of first mounting rod is opened to have fixed hole in array state, and the lower end rod body of first mounting rod is connected with impeller body and is set up, the rod body of first mounting rod and second mounting rod all is fixedly installed with sleeve, just the outside of sleeve is provided with mounting assembly. The utility model adjusts the depth of impeller body, can accurately control air shearing force, to facilitate the generation of the bubble of suitable size, thereby the collision probability of mineral and bubble is promoted, the mineral efficiency is improved, and the diversified ore and process demand are adapted.