20results about How to "Avoid uneven flow" patented technology

The invention belongs to the technical field of biomedical engineering and microfluidics, and particularly discloses a vascularized organ chip and method for large-scale culture, the vascularized organ chip comprises an upper runner layer and a lower culture layer, and the runner layer and the culture layer are fixedly sealed; a liquid storage pipe matched with the flow channel layer is adhered to the upper surface of the flow channel layer; according to the vascularized organ chip, the flow channel layer is used for pouring a culture solution to provide fluid stimulation and nutrients for cells; the three parallel-connected large-scale culture chambers of the culture layer are used for culturing cells, so that blood circulation of a microvascular system in a human body can be simulated, and a microenvironment in tissues can be reproduced more truly; meanwhile, the requirement for culturing a large number of tissue cells through the chip can be met, and the cell yield and the experiment scale can be effectively increased.

The invention provides an impact jet flow double-layer micro-channel heat sink structure with fins and a working method thereof, and belongs to the technical field of micro-channel enhanced heat dissipation, the impact jet flow double-layer micro-channel heat sink structure comprises an upper-layer micro-channel, a lower-layer micro-channel and a plurality of partition plates, the upper-layer micro-channel and the lower-layer micro-channel are connected through a middle layer, and the partition plates vertically penetrate through the upper-layer micro-channel and the lower-layer micro-channel; the upper-layer micro-channel comprises a heat sink top, a first inlet area is arranged on the heat sink top, a flow dividing area is arranged on the lower portion of the first inlet area, flow guiding areas are arranged on the two sides of the flow dividing area, a second inlet area and a third inlet area are arranged at ports of the two sides of the upper-layer micro-channel respectively, and fins are installed below the heat sink top. A confluence area is formed between the fins and the middle layer, the lower-layer micro-channel comprises a heat sink substrate, and outlet areas are arranged at ports of the two sides of the lower-layer micro-channel respectively; the heat exchanger has the characteristics of high efficiency, relatively uniform convective heat exchange performance, low energy dissipation and high overall heat exchange.

The invention relates to a two-stage three-level high-voltage battery charging and discharging device and a control method. The two-stage three-level high-voltage battery charging and discharging device comprises an ACDC circuit connected with a power grid and used for converting alternating current into direct current; the DCDC circuit comprises a first capacitor, a second capacitor, a third capacitor and a first flying capacitor control circuit; the anode of the first capacitor is connected to the first flying capacitor control circuit through a first connection point, and the cathode of the first capacitor is connected with the anode of the second capacitor; the negative electrode of the second capacitor is connected to the first flying capacitor control circuit through a third connection point; the positive electrode of the third capacitor is connected to the first flying capacitor control circuit through a fourth connection point, and the negative electrode of the third capacitor is connected to the first flying capacitor control circuit through a fifth connection point; the first flying capacitor control circuit is connected to the ACDC circuit through a second connection point; and the LC filter circuit is connected with the DCDC circuit. The system stability and reliability are enhanced, and the test requirements of the high-voltage battery are met.

The invention relates to the technical field of alloy production devices, in particular to a crushing device for large-particle alloy smelting, which comprises a machine body, a plurality of tooth rollers are arranged in the machine body and can perform multiple crushing on large-particle alloy, and a feeding hole, a first treatment cavity, a second treatment cavity and a collecting cavity are formed in the machine body; materials are guided in through the feeding port, are divided through the first treatment cavity, are polymerized through the second treatment cavity and finally fall into the collection cavity to be collected. A guide plate, a first rough grinding assembly and a second rough grinding assembly are arranged in the first treatment cavity; the guide plate is used for alternately guiding the materials into the first rough grinding assembly and the second rough grinding assembly; the first rough grinding assembly and the second rough grinding assembly operate alternately, and the effect that the two states of static discharging and sealed crushing are conducted synchronously is achieved. The second treatment cavity is provided with a fine grinding assembly; the effects of static feeding and crushing in a sealed state can be achieved, and on the premise that the normal feeding speed is guaranteed, material splashing and leakage can be prevented.

The utility model discloses an extruder for polytetrafluoroethylene-based composite material production, and relates to the technical field of composite material production, the extruder comprises a shell, an extrusion mechanism is arranged in the shell, a heating mechanism is arranged in the shell, the extrusion mechanism comprises a groove, the inner wall of the groove is fixedly connected with a sliding chute, and the sliding chute is connected with the heating mechanism. Through the arrangement of the moving plate, the first bolt can be screwed out, then the moving plate slides in the sliding groove, so that other molds are aligned with the material extruding barrel, then the first bolt is screwed in the moving plate to fix the position of the moving plate, then the motor is started, the motor enables the rotating shaft to rotate at the moment, and the rotating shaft is rotated. And then the rotating shaft drives the first gear to rotate, and through the moving plate capable of sliding in the sliding groove, the effects that materials of different shapes can be extruded according to specific requirements, extruded products of different shapes can directly meet the final application requirements, the later machining steps are reduced or avoided, and therefore the production efficiency is improved are achieved.

This invention provides a charge-type control circuit, control system, and control method for a three-arm resonant topology. The charge-type control circuit controls a three-arm resonant topology circuit to perform six-step commutation. A circuit output feedback module collects the output electrical signal of the three-arm resonant topology circuit and processes the signal to obtain a feedback result. An integral comparison module collects the primary resonant signal, calculates the integral result, compares the integral result with the feedback result, and outputs a pulse trigger signal based on the comparison result. A drive generation module outputs a frequency adjustment signal to the three-arm resonant topology circuit based on the pulse trigger signal. The frequency adjustment signal controls the three-arm resonant topology circuit to perform six-step commutation. By triggering the state flip of the switching transistor when the integral calculation result reaches a preset threshold, inconsistencies in the parameters of the resonant components between the bridge arms that lead to uneven current flow are avoided, thus improving the device's lifespan and reliability.

The present application relates to the technical fields of electric dust removal, in particular to a flexible electrode electric dust removal device for preventing dust sticking, comprising a box body, a spray pipe fixedly connected to the top of the box body, and a plurality of flexible electrode cloths fixedly connected to the inside of the box body; an adjustable flow guide mechanism is arranged in the box body, which comprises a mounting box and a mounting frame, a support frame is fixedly connected to the inside of the mounting frame, a plurality of passing grooves are formed in the support frame, and a plurality of accommodating grooves are symmetrically formed in the support frame corresponding to the positions of the passing grooves; the present application has the beneficial effects that: the air bag adjustable flow guide structure can change the size of the passing groove section in real time according to the flue gas flow and the flue gas content concentration, adapt to various working conditions, ensure uniform distribution of airflow, avoid local airflow short circuit and uneven flow rate, and at the same time, achieve the effect of improving the contact time of flue gas and electrode cloth, thereby improving the quality of flue gas dust removal.

This application discloses a wind turbine blade injection device and equipment. The wind turbine blade injection device includes a mold, a lifting mechanism, an injection assembly, a sensor, and a controller. The lifting mechanism includes a drive component and a lifting platform. The drive component moves the lifting platform along the height direction of the mold. The injection assembly includes a buffer bag, a first guide pipe, and a second guide pipe. The buffer bag is placed on the lifting platform and is connected to the injection glue machine through the first guide pipe and to the guide channel through the second guide pipe. The sensor detects the liquid level injection height within the mold. The controller is electrically connected to both the lifting mechanism and the sensor. Based on the liquid level injection height information detected by the sensor, the controller controls the drive component to adjust the height of the lifting platform so that the height of the buffer bag matches the liquid level injection height. The technical solution provided by this application can ensure uniform resin injection, reduce problems such as uneven resin flow and residual air bubbles, and improve the quality of blade molding.

The application relates to the battery technical field and discloses a cover plate structure and a battery. The cover plate structure comprises: a plate body, which is provided with a pole mounting hole; a cantilever part is arranged around the pole mounting hole; a pole assembly is mounted in the pole mounting hole and abuts against the cantilever part; the surface of the cantilever part for supporting the pole assembly is a first surface of the cantilever part; the surface of the plate body on the same side of the first surface of the cantilever part is a first surface of the plate body; and the first surface of the cantilever part is lower than the first surface of the plate body in the direction perpendicular to the first surface of the plate body, thereby forming a staggered structure. The cover plate structure provided by the application realizes the thinning of the thickness of the cantilever part by making the first surface of the cantilever part lower than the first surface of the plate body, thereby reducing the material consumption in the forming process of the cantilever part, avoiding the uneven flow of the material in the extrusion forming process, and ensuring the uniform thickness of the cantilever part.

The utility model discloses a pouring gate structure of an injection mold, which comprises a pouring head, a double-thread middle-section feeding head and a filter sleeve, the double-thread middle-section feeding head is assembled and mounted at the top end of the pouring head in a threaded manner, the filter sleeve is detachably mounted in the double-thread middle-section feeding head, and an internal thread right-angle connector is assembled at the top end of the double-thread middle-section feeding head in a threaded manner; an annular flange is integrally formed at one end in the internal thread right-angle connector, and a pressing ring is installed at the position of an opening in the top end of the double-thread middle-section feeding head below the annular flange. According to the utility model, a molten material is injected into the filter sleeve of the double-thread middle-section feeding head by utilizing the internal thread right-angle joint, the molten material treated by the filter sleeve enters the pouring head, and the molten material is fed into a cavity channel of an injection mold by the equidirectional three-section type material injection structure at the bottom end of the pouring head.

The invention relates to the technical field of flow batteries, in particular to a side liquid inlet galvanic pile structure and a welding device thereof, a flow frame in a galvanic pile comprises a plate body, and a rectangular through hole is formed in the plate body; an electrolyte runner is arranged on each of the upper side and the lower side of the rectangular through hole in the plate surface on one side of the plate body; the electrolyte runners are used for communicating the rectangular through hole with the side edge of the plate body; a group of through grooves are formed in the side edge of the plate body and located on the upper side and the lower side of the electrolyte flow channel, and a group of through grooves are also formed in the opposite positions of the side edge, opposite to the side edge provided with the through grooves, of the plate body; u-shaped grooves are formed in the positions, opposite to the through grooves, of the side edges of the end plates. After the whole stack is packaged, the U-shaped grooves of the end plates on the two sides and the groups of through grooves corresponding in position jointly form a mounting groove with a concentric-square-shaped structure, and the mounting groove is used for mounting a connector; the electrolyte can independently enter and exit from each single battery piece, and the average charging and discharging efficiency of the flow battery is improved; and the electrolyte circulation of other single battery pieces is not influenced by the blockage of the electrolyte flow channel in one single battery piece.

The invention discloses automobile part plastic pipe injection molding production equipment, and relates to the technical field of injection molding production, the automobile part plastic pipe injection molding production equipment comprises a rack main body, a driving module is mounted below the rack main body, a dynamic vibration injection mechanism is arranged above the driving module, and the dynamic vibration injection mechanism is used for continuously and dynamically guiding injection molding melt to flow; the dynamic vibration injection mechanism comprises a driving gear ring disc installed above the driving module, the injection molding framework can continuously keep rotating in the injection molding process, then it is guaranteed that the flowing direction of injection molding melt in the cavity shell is not fixed any more, the dynamic flowing mode is beneficial to breaking through an unstable flowing mode formed in the flowing process of the melt, and the stability of the injection molding process is improved. The problems such as boundary layer separation in laminar flow and the like are solved, the flowing direction of the melt is continuously driven through directional rotation, the pressure distribution of the melt in the cavity shell can be more balanced, the phenomenon that the melt is not uniformly distributed due to too high or too low local pressure is reduced, and the uniform melt distribution is beneficial to improving the density uniformity of a product.

This invention belongs to the field of soundproof glass processing technology, specifically relating to a multi-layer laminated soundproof glass and its lamination process. The multi-layer laminated soundproof glass is composed of multiple layers of glass sheets alternately laminated with sound-insulating films. The thickness of the glass sheets gradually increases from the outside to the inside, with a thickness difference of at least 1 mm between adjacent glass sheets. The sound-insulating film gradually increases in damping from the outside to the inside, forming a gradient damping structure. For 3-layer or 4-layer glass structures, materials such as PVB film, SGP ionic interlayer film, and modified butyl rubber sound-insulating film with corresponding layer numbers are selected. The lamination process employs segmented temperature and pressure controlled curing and stepped gradient slow cooling. This invention effectively staggers the resonance peaks of each glass layer, solving defects such as residual bubbles, interlayer misalignment, and stress cracking in existing processes. The resulting product has a weighted sound insulation Rw of 38-45 dB, a yield rate >98%, and is controllable, highly versatile, and suitable for industrial mass production in high-end buildings and quiet environments.

The flow dividing and collecting structure comprises a flow dividing and collecting assembly and a sealing main plate, the flow dividing and collecting assembly comprises a channel part and a flow equalizing part, a plurality of flow equalizing cavities are formed in the first brazing surface of the flow equalizing part in an array mode, and each flow equalizing cavity is communicated with a fluid channel of the channel part through a corresponding flow equalizing groove channel and a flow dividing hole; the sealing main plate is provided with an array formed by a plurality of heat exchange tube insertion holes, the heat exchange tube insertion holes correspond to the flow equalizing cavities in position, and the lower surface of the sealing main plate is attached to the first brazing surface of the flow dividing and collecting assembly to form a uniformly-sealed flow dividing and collecting structure; the scheme that the flow dividing and collecting assembly and the sealing main plate are machined respectively is adopted, design and machining of the flow equalizing channels are facilitated, and the better flow equalizing effect is achieved; the micro-channel heat exchanger and the heat pump system adopting the flow dividing and collecting structure are small in size, high in bearing pressure, low in cost and high in heat exchange efficiency.

The invention discloses a raw material leveling and conveying device for seasoning production, and relates to the technical field of seasoning production and conveying equipment. Comprising a conveying belt, a stirring assembly for stirring seasoning packaging bags is arranged on the upper surface of the conveying belt, the stirring assembly comprises two sets of rotating cylinders, the outer walls of the two sets of rotating cylinders are slidably connected with multiple sets of stirring plates, and a guiding assembly for guiding the seasoning packaging bags is arranged between the two sets of rotating cylinders; and two groups of guide blocks are arranged on the surfaces of one sides of the two groups of rotary drums. According to the seasoning packaging bag flattening device, the seasoning stirring assembly is matched with the guiding assembly to calibrate the posture of a seasoning packaging bag, the situation that due to the posture deviation of the packaging bag, the gap defect of the edge of a bag body is caused during flattening operation is effectively avoided, the stability and reliability of the subsequent stacking procedure are guaranteed, the quality defect rate of flattened products is greatly reduced, and the production efficiency is improved. The workload of operators is reduced, and the working efficiency of continuous operation is improved.

The invention discloses a flow aid quantitative powder spraying device, and relates to the technical field of quantitative powder spraying devices.The flow aid quantitative powder spraying device comprises a flow aid containing bin, a sealing cover is arranged at the top end of the flow aid containing bin, a discharging pipe is arranged at the bottom of the flow aid containing bin, and a quantitative discharging mechanism is arranged at the bottom end of the discharging pipe; and one side of the quantitative discharging mechanism is connected with the driving mechanism, and the flow guide mechanism is arranged in the flow aid containing bin. Through the cooperative arrangement of the flow aid containing bin, the sealing cover, the discharging pipe, the quantitative discharging mechanism, the driving mechanism and the flow guide mechanism, quantitative flow aid powder can be sprayed out, the risk of inaccurate manual weighing is reduced, the stability of the product quality is guaranteed, the product performance and the user experience are improved, and the production cost is reduced. And good flowability of the flow aid powder during discharging can be guaranteed, uneven flowing of the flow aid powder is avoided, and the discharging efficiency of the flow aid powder is improved.

This invention discloses a method for forming ultra-thin stainless steel pipe fittings, relating to the field of stainless steel pipe production and processing technology. It aims to solve the problems of branch pipe rupture and inner wrinkling during the current hydroforming process of ultra-thin stainless steel pipe fittings. The method includes: S1: billet preparation and pretreatment; S2: mold and sealing assembly; S3: staged collaborative forming; S301: pre-expansion and mold-fitting stage, where the internal pressure is increased to 0.8 MPa at a rate of 0.1 MPa / s and maintained stably; S302: main forming precise material replenishment stage, employing a gradient pressure increase strategy; S303: forming stress release stage, maintaining a stable internal pressure of 6-7 MPa for 10 seconds to ensure the billet completely fits the mold cavity, followed by a staged pressure relief method. This invention, through the application of a nano-lubricating film coating on the inner wall of the billet, low-temperature preheating treatment, stress-dispersing mold design, and the collaborative control of gradient pressure increase and real-time monitoring and material replenishment during the main forming stage, achieves effective dispersion of tensile stress concentration at the top of the branch pipe of the ultra-thin stainless steel pipe fitting and precise material replenishment, significantly reducing the risk of rupture.

An immersed liquid cooling device disclosed by the present invention comprises a cabinet body, a cooling liquid supply mechanism and a plurality of servers arranged in the cabinet body, the top of the cabinet body is provided with a flow equalizing component, the cabinet body is provided with liquid cooling nozzles above the servers, the liquid cooling nozzles are communicated with the flow equalizing component through connecting pipes, and the connecting pipes are connected with the flow equalizing component through connecting pipes. And each connecting pipe is provided with an on-off valve. The immersed liquid cooling device has the advantages of improving the spraying uniformity of the servers, reducing the temperature difference of the servers, improving the running states of the servers and the like.

The invention belongs to the technical field of precision printing, and relates to a full-opening steel plate with a coating and a preparation method and application thereof.The full-opening steel plate comprises a full-opening steel plate base body, the front face, the back face and the inner wall of an opening of the full-opening steel plate base body are each provided with a hydrophobic and oleophobic coating, or hydrophobic and oleophobic coatings are arranged on the inner wall of the opening of the full-opening steel plate base body. Hydrophobic and oleophobic coatings are arranged on the front face and the inner wall of an opening of the full-opening steel plate base body, and a friction increasing coating is arranged on the back face of the full-opening steel plate base body, or the hydrophobic and oleophobic coatings are arranged on the front face and the inner wall of the opening of the full-opening steel plate base body, and no coating is arranged on the back face of the full-opening steel plate base body. The hydrophobic and oleophobic coatings are arranged on the front face and the inner wall of the opening of the full-opening steel plate base body, and the hydrophobic and oleophobic coating and the friction increasing coating are selectively arranged on the back face of the full-opening steel plate base body or not arranged, so that the combination of the hydrophobic and oleophobic function and the friction increasing function can be achieved; the defects that when an existing steel plate is used, slurry is not thoroughly separated, the shaping effect is poor, and ink feeding is not full are overcome, the binding force of the coating and the steel plate base body is high, and the service life of the steel plate is long.