51results about How to "Improve flow status" patented technology

The invention belongs to the technical field of battery thermal management, and discloses a battery pack and a phase change material coupling liquid cooling composite thermal management system.The battery pack comprises a plurality of battery structures, each battery structure comprises a lithium battery, a fin structure, a phase change material filling area and a liquid cooling plate, and the fin structure is arranged on the periphery of the lithium battery; the liquid cooling plate is arranged on the periphery of the fin structure, a phase-change material filling area is formed between the liquid cooling plate and the fin structure, and the phase-change material filling area is filled with a phase-change material for absorbing redundant heat and generating phase change, so that the temperature fluctuation of the battery is reduced. The lithium bromide heat pump and the direct-current power supply are combined, and accurate adjustment of the temperature of the battery pack is achieved through efficient heat exchange and intelligent control. The system can be rapidly switched between a cooling mode and a heating mode, and it is ensured that the battery is always kept within the optimal temperature range in different working environments.

The invention discloses a semi-coke tail gas chemical looping hydrogen production system which is characterized in that a first gas inlet chamber and a second gas inlet chamber are arranged in the hydrogen production system, and a reaction tube comprises a first reaction chamber and a second reaction chamber; the gas inlet of the first reaction chamber is communicated with the gas inlet of the second reaction chamber; the air outlet of the first reaction chamber is communicated with the air outlet of the second reaction chamber, so that the first reaction chamber and the second reaction chamber can supply air independently, the air speed in the first air inlet chamber is higher than that in the second reaction chamber, internal airflow circulation is effectively formed in the internal circulating fluidized bed, the reaction process is more sufficient, and the reaction efficiency is improved. The device effectively improves the hydrogen production efficiency, is simple in structure, realizes the independent air supply process through the independent design of the two cavities of the gas inlet pipe and the reaction pipe, realizes the effective circular reaction of tail gas in the reaction pipe through the control of the air speed, and improves the conversion efficiency.

The invention relates to an efficient heat exchanger for petrochemical engineering, and relates to the technical field of heat exchangers. The device comprises a heat exchange shell, a corrosion inhibition box fixed to the heat exchange shell, a plurality of heat exchange pipes and two baffle plates which are rotationally arranged on the heat exchange shell, a processing mechanism for conducting scraping, brushing, fracture detection and marking on the heat exchange pipes correspondingly, and a rotating assembly for conducting rotating driving on the heat exchange pipes. The translation assembly is used for carrying out translation driving on the two baffle plates; the test assembly is used for carrying out deformation detection on the inner wall of the heat exchange shell; the corrosion inhibition box is used for storing a corrosion inhibitor, and a control assembly used for controlling the release amount of the corrosion inhibitor is arranged on the heat exchange shell. The purpose of heat exchange between the petroleum raw material and the heat medium can be achieved, the petroleum raw material can be guided to be evenly distributed in the tube pass, the phenomenon that the petroleum raw material forms laminar flow or uneven flow in the tube pass is avoided, heat stress caused by uneven heating of the heat exchange tube is prevented, and deformation and cracking of the heat exchange tube due to the heat stress are prevented.

The utility model discloses a material suction device for winding film production, which comprises a base, a feeding mechanism assembled on the top of the base, an adjusting mechanism assembled on the outer side of the feeding mechanism and a vacuum material suction machine assembled on one side of the adjusting mechanism, and a material suction head is rotationally mounted in the storage hopper. The utility model relates to the technical field of winding film production. According to the material suction device for winding film production, the material suction head is in a rotating state, a material pushing plate can push surrounding raw materials to the material suction head, the material suction head can conveniently and timely suck the raw materials, manual holding of the material suction head for material suction operation is not needed, the working intensity of workers is reduced, and the working efficiency is improved. Meanwhile, the raw materials can be kept in a good flowing state, the blocking condition caused by accumulation is avoided, the raw materials can be smoothly sucked and guided into processing equipment through the vacuum material suction machine, and the material suction effect is effectively improved.

The invention belongs to the technical field of integrated circuit packaging, and particularly relates to a micro-channel packaging structure based on cooling liquid cooling and a packaging method thereof. Comprising a packaging body, a plurality of grooves are symmetrically formed in the upper surface and the lower surface of the packaging body, functional chips are mounted in the grooves, and active bonding pads of the functional chips face the outer side; the metal wiring layers are respectively arranged on the surfaces of the functional chips on the upper side and the lower side; the silicon through holes are vertically formed in the left side and the right side of the packaging body respectively, copper layers are filled in the silicon through holes to form a silicon through hole structure, and the metal wiring layers on the upper side and the lower side are conducted through the silicon through hole structure; the micro-channel groove is formed between the functional chips on the upper side and the lower side in the left-right direction, and the two ends of the micro-channel groove extend in the vertical direction and are exposed to the outside. Liquid helium is introduced to improve the heat dissipation effect of the double-sided chip, double-sided interconnection is realized by using the silicon through hole structure, and the heat dissipation problem of the high-performance chip can be effectively solved while the integration degree is improved.

The invention discloses an SOFC-oriented multistage solid hydrogen storage system and method. The SOFC-oriented multistage solid hydrogen storage system comprises a gaseous hydrogen storage device and an air conveying device, the gaseous hydrogen storage device is connected with the SOFC and the combustion device through the hydrogen heat supplementing device; the air conveying device is connected with an air supply device, the end part of the air supply device is connected with an air heat compensation device through an air heat recovery device, and the air heat compensation device is connected with the SOFC; the hydrogen storage reactors are installed between the gaseous hydrogen storage device and the hydrogen heat supplementing device, the hydrogen storage reactors comprise a TiFe reactor, an Mg2Ni reactor and a TiH2 reactor, and the TiFe reactor, the Mg2Ni reactor and the TiH2 reactor are sequentially communicated. The system provides a safe, high-density and low-cost hydrogen storage function for the SOFC through integration of the SOFC and multi-stage solid hydrogen storage, high-temperature waste heat generated in the SOFC power generation process just provides a driving heat source for solid hydrogen storage and hydrogen desorption, and the defects in the prior art are overcome.

The invention relates to the field of extrusion forming of piston skirts, in particular to an extrusion forming process of a large-size piston skirt of a marine diesel engine, which comprises the following steps of: placing a piston skirt raw material in a pre-forging annular die and a pre-forging lower die, pressing and moving downwards through a pre-forging convex die, forming a piston skirt pre-forging piece, taking out the pre-forging convex die, and replacing the pre-forging convex die with a finish-forging convex die; according to the method, the extrusion deformation process of the piston skirt is optimized, the internal metal deformation is smoother, the structure is more uniform, the metal flowing state of an area A with the most concentrated stress in the using process of the piston skirt is particularly improved, and the piston skirt forging is formed through downward pressing and movement of the finish-forging male die. And the overall quality is improved.

The invention discloses an ingredient stirring device for injection molding of automotive upholstery. The ingredient stirring device comprises a storage module, a feeding module, a mixing module, a conveying module and a control module. The storage module is provided with a plurality of groups of storage bins for storing particles, powder and liquid materials, the material level is monitored in real time through a sensor, and continuous feeding is guaranteed; a multi-section variable-diameter spiral feeding device and a weighing type metering device of the feeding module realize accurate conveying and proportional control of materials; the mixing module is composed of a mixing chamber, a dynamic stirring system and a temperature control device, the stirring system is driven by a servo motor, efficient and uniform mixing is achieved by adjusting the angle and speed of stirring blades, and the temperature control device keeps the temperature stable in the mixing process; the conveying module conveys the mixed materials to an injection molding machine through a discharging pipeline and a detachable filtering system; the control module integrates a touch screen and a Bluetooth module and is used for real-time monitoring and remote operation. The device is high in batching uniformity and high in feeding precision, and meets the requirements of injection molding production of automotive upholstery.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The application discloses a kind of composite pipe fittings first-in first-out injection molding structure, including a storage cylinder, the front of the storage cylinder is equipped with a rotating valve, the storage cylinder is equipped with a tubular bushing and a movable plunger, the plunger penetrates the bushing, a material injection port is arranged on the lateral wall of the storage cylinder, a pre-plastic component is arranged on the material injection port, an annular annular groove is arranged on the outer wall of the bushing, and the annular groove is matched with the material injection port, wherein the plunger is between a starting position and an end position, and the material injection port is located at the rear of the starting position. The composite pipe fittings first-in first-out injection molding structure utilizes annular runner, uniform feeding, good flow state, easy to remove air, solves the problem of residual material long retention decomposition and carbonization, and also solves the problem of product quality caused by the injection of degraded material into the pipe fittings, improves the material utilization rate.

The utility model belongs to the technical field of coating production, and particularly relates to a dispersion machine for epoxy resin paint production, which comprises a base and a mounting frame, a hydraulic cylinder is mounted on the base, a cross beam is arranged at the output end of the hydraulic cylinder, one end of the cross beam is rotatably connected with a stirring shaft, and a dispersion disc is arranged at the bottom of the stirring shaft; the mounting frame is arranged at the end, located at the stirring shaft, of the cross beam, a flow field mechanism is arranged on the mounting frame, the flow field mechanism comprises two arc-shaped adjusting blocks which are oppositely arranged, the adjusting blocks are in sliding connection with the mounting frame, the stirring shaft is located between the two adjusting blocks, and the two adjusting blocks are close to each other and away from each other through an adjusting part. At least two baffles are rotationally connected to the lower portion of each adjusting block, and the baffles are locked through locking pieces.

The invention belongs to the technical field of conical valves, and particularly relates to a conical valve stock bin feeding and discharging connection system which comprises a control system module, an electrical module, an electric module, a communication module, a PLC control module, an automatic discharging module, an AGV automatic navigation system module and an HMI module. The control module is connected with the electrical module and the electric module through signals; in the process, the vibrator is used for driving the conical valve in the movable stock bin to move up and down, the anti-blocking effect of the movable stock bin in the discharging process can be achieved, the discharging smoothness is improved, and the discharging speed is increased. The pneumatic system must have good sealing performance, dust can be effectively prevented from leaking in the discharging process, and components in the pneumatic system are protected from being affected by the dust by arranging the sanitary cover.

The utility model discloses an air injection pipeline used for uniform flow of airflow and a Malangori drying machine, the air injection pipeline comprises double spray pipes including an outer pipe and an inner pipe, and the outer pipe is sleeved outside the inner pipe; one end of the inner pipe is provided with an air inlet, and the other end is a sealed end; two ends of the outer pipe are sealed; a buffer area is arranged between the outer wall of the inner pipe and the inner wall of the outer pipe; a plurality of first air outlet holes are formed in the outer pipe; a plurality of second air outlet holes are formed in the inner pipe; the diameter of the first air outlet hole is gradually increased in the direction from the air inlet to the sealing end; and gas in the double spray pipes sequentially passes through the second air outlet hole, the buffer area and the first air outlet hole and then is sprayed out. According to the utility model, the plurality of first air outlet holes with gradually increased diameters are arranged, so that the gas can form gradient acceleration and diffusion in the pipeline, the flowing state of the gas flow in the pipeline is effectively improved, and the non-uniform phenomenon caused by local high-speed or low-speed flowing is avoided; and stable and uniform distribution of the air flow in the whole pipeline length is realized.

The invention discloses a spraying structure for a devolatilization device, which comprises an outer pipe, a conveying pipe and a nozzle, the outer pipe is tightly connected with an input pipe of circulating hot water through an auxiliary pipe, and is used for receiving the supply of hot water; one end of the conveying pipe is firmly connected to the outer pipe, the other end of the conveying pipe extends into the kettle body and is tightly connected with the spray head, and a spraying opening of the spray head is arranged downwards; the outer pipes and the sprayers are arranged in two sets, each set of outer pipes is provided with one set of sprayers correspondingly connected with the outer pipes, and the upper set of sprayers and the lower set of sprayers are arranged in a staggered mode in the spatial layout.

The utility model provides a flow guiding device of an air inlet of a centrifugal fan and the centrifugal fan, the flow guiding device is defined by a side wall rotating around the axis of the flow guiding device, and the side wall comprises a plane wall, a first curved surface wall, a second curved surface wall and a third curved surface wall which are sequentially connected in the axial direction; the plane wall is perpendicular to the axis of the flow guide device, the second end of the plane wall is tangentially connected with the first end of the first curved wall, the second end of the first curved wall is tangentially connected with the first end of the second curved wall, and the second end of the second curved wall is tangentially connected with the first end of the third curved wall; the position, with the minimum vertical distance from the axis of the flow guiding device, of the flow guiding device is located on the second curved surface wall or the third curved surface wall, and the minimum vertical distance is the throat diameter of the flow guiding device. According to the flow guiding device, the flowing state of the front disc of the impeller can be improved, the separation loss of airflow on the back faces of the blades at the front disc is obviously reduced, and the effects of reducing pneumatic loss and reducing noise are achieved.

The invention provides an urban sewage treatment nitrogen and phosphorus removal structure which comprises a treatment box, a water inlet is formed in the upper portion of the treatment box, a water outlet is formed in the bottom of the treatment box, a moving mechanism is arranged in the treatment box, the moving mechanism comprises two guide mechanisms symmetrically arranged in the treatment box, and a driving mechanism is arranged on one guide mechanism. And a reaction mechanism is arranged at the output end of the driving mechanism. The reaction mechanism is driven by the moving mechanism to horizontally move in the treatment box, and meanwhile, the reaction mechanism can rotate and stir, so that a nitrogen and phosphorus removal agent and sewage can be fully and uniformly mixed in a three-dimensional space, the contact opportunity of the agent and pollutants is greatly improved, full proceeding of a nitrogen and phosphorus removal chemical reaction is ensured, and the nitrogen and phosphorus removal efficiency is improved. Therefore, pollutants such as nitrogen, phosphorus and the like in the sewage are efficiently removed, the treated sewage can meet corresponding discharge standards, and the pollution pressure on the environment of a receiving water body is effectively relieved.

The utility model discloses a glass-lined reaction tank with built-in heat exchange baffles, and belongs to the technical field of glass-lined reaction tanks. Comprising a tank body, baffling heat exchange mounting holes are formed in the side wall and the bottom of the tank body, L-shaped baffling heat exchange devices are mounted in the holes through sealing connecting devices, a glass lining surface is arranged on the part of the outer wall located in the tank body, and a heat exchange medium inlet and a heat exchange medium outlet are formed in the two ends respectively. The sealing connection device comprises an installation cylinder, a guide-out cylinder, a sealing support and a sealing pressing cylinder, two or more polytetrafluoroethylene sealing rings are arranged between the sealing support and the baffling heat exchange device in a sleeved mode, and radial sealing is achieved through pressing of the sealing pressing cylinder. The baffling and heat exchange functions are integrated, the connection reliability is ensured through multiple sealing structures, meanwhile, detachable installation of the baffling heat exchange device is achieved, overhauling and replacement are convenient, damage to a glass lining layer in a traditional welding mode is avoided, and the heat exchange efficiency, use safety and maintenance convenience are remarkably improved.

The invention discloses a steam-doped super-cavitation noise reduction design method for an electronic expansion valve. Aiming at noise caused by two-phase flow of a refrigerant of an automobile heat pump air conditioner, a vapor-doping super-cavitation optimization strategy is provided, vapor-doping components are additionally arranged at an outlet section of an electronic expansion valve and an inlet section of an evaporator, and refrigerant gas is effectively led to an outlet of the electronic expansion valve by utilizing the pressure difference between the inlet section of the evaporator and the outlet of the electronic expansion valve; the local gas content near an outlet of the electronic expansion valve is increased, the pressure loss is reduced, and the cavitation phenomenon is restrained. Key structure parameters of the gas mixing component are proposed, and the optimal structure parameter value is obtained through a response surface optimization algorithm. The result shows that the noise is reduced by 9.95 dB by the optimized steam mixing component, and a theoretical basis and practical guidance are provided for the noise reduction design of an automobile heat pump air conditioning system.

The invention discloses a resistance-reducing turbulent flow rib structure in a wheel cover, and belongs to the technical field of automobile parts, the resistance-reducing turbulent flow rib structure in the wheel cover comprises a wheel cover body, a wheel brow is fixedly connected to the edge of the outer side of the wheel cover body, a wheel cover internal turbulent flow rib is arranged on the upper edge of the inner side wall of the wheel cover body, and the wheel cover internal turbulent flow rib and the wheel cover body are integrally formed in a compression molding mode. The top of the outer side wall of the wheel eyebrow is fixedly connected with a wheel eyebrow decorating part. An inner concave part is arranged at the top of the wheel cover body, and the inner concave part is of an arc-shaped concave structure; according to the wheel cover, the inner turbulence rib structure of the wheel cover is additionally arranged in the wheel cover body, so that the flowing state of air flow in a wheel cavity is improved, generation of vortexes at the inwards-concave position is greatly reduced, energy dissipation and air resistance in the vehicle running process are reduced, and the endurance mileage of a vehicle is increased.

The utility model relates to the technical field of noise reduction ventilation pipelines, and discloses a noise reduction ventilation pipeline which comprises a device body, the device body comprises a first air pipe body and a second air pipe body, the first air pipe body is provided with a first air inlet and a first air outlet, and the second air pipe body is provided with a second air outlet. The second air pipe body is provided with a second air inlet and a second air outlet, the inner wall of the first air pipe body and the inner wall of the second air pipe body are both coated with sound absorption cotton, and the top end and the bottom end, close to the inner wall face of the second air outlet, of the second air pipe body are both fixedly provided with arc-shaped backflow plates. The sound-absorbing cotton can effectively absorb and reduce noise generated when airflow flows in the pipeline. When the air flows in the pipeline, friction and collision are generated between the air and the wall surface of the pipeline, so that noise is generated. The sound-absorbing cotton can absorb the sound waves and reduce the propagation of noise, and the arc-shaped backflow plate is used for improving the flowing state of airflow and reducing the formation of vortex and turbulent flow, so that the generation of noise is further reduced.

The utility model discloses a flow-limiting orifice plate for a backflow pipeline of a nuclear power plant, relates to the technical field of transportation of fluid in a pipeline, and is used for solving the problems of violent vibration and noise of the pipeline caused by cavitation of an existing flow-limiting orifice plate for a pipeline of a safety facility system. The restriction orifice plate comprises an orifice plate and a handle arranged above the orifice plate, the pore plate is round, the thickness of the pore plate is 1 / 10-1 / 4 of the inner diameter of the pipeline where the pore plate is located, a round hole is formed in the middle of the pore plate, and a chamfer is arranged on one side of the round hole; the size of the chamfer is 1 / 2-2 / 3 of the thickness of the pore plate; and the flow-limiting orifice plate is mounted in the pipeline through an ASME standard flange. The flow state behind the pore plate can be improved by adopting the oblique-angle flow limiting pore plate, the pipe nozzle jet flow of the right-angle pore plate is changed into orifice diffusion flow, the lowest pressure P2 behind the pore plate can be further increased, the cavitation phenomenon behind the pore plate is weakened, and the cavitation performance of the pore plate is improved.

The utility model provides a kind of battery module structure, including supporting plate, through-hole and loudspeaker mouth, supporting plate is installed on battery module, and the explosion-proof valve side of battery module is covered;Through-hole is set up on supporting plate, and it is corresponding with the position of explosion-proof valve;Loudspeaker mouth is provided with variable cross section caliber, and is protruding installed on the side of supporting plate opposite to explosion-proof valve, and located on the circumference of through-hole;The caliber of loudspeaker mouth near explosion-proof valve side is less than the caliber of explosion-proof valve side far away from it.The utility model improves the flow state of cell ejecta by loudspeaker mouth structure, reduces resistance, improves the flow efficiency of fluid, helps cell ejecta shunt and guide, makes ejecta flow according to the designed flow direction and requirement, avoids confusion and vortex phenomenon, prevents ejecta from flowing back to other cells, avoids other cell thermal runaway, to solve the technical problems of high material cost of existing thermal barrier scheme, increase assembly process, hinder the detectability of bottom explosion-proof valve.

The invention provides an automatic control system and method for dense medium beneficiation. The method comprises the steps that the axial speed of fluid in an inner rotational flow area and the radial speed of fluid in an outer rotational flow area in a dense medium cyclone after flow gradient increase of dense medium suspension liquid each time are collected; determining a first dynamic change characteristic of the target mineral particles according to the first density field distribution of the fluid in the inner rotational flow area in the dense medium cyclone at each axial speed, and determining a second dynamic change characteristic of the target mineral particles according to the second density field distribution of the fluid in the outer rotational flow area in the dense medium cyclone at each radial speed; determining the separation degree of the target mineral particles by combining the first dynamic change characteristic and the second dynamic change characteristic with the centrifugal coefficient of the target mineral particles in the rotating process; and the valve opening degree of a dense medium suspension liquid inlet in the dense medium cyclone is controlled based on the separation degree. According to the scheme, based on the separation degree, the target mineral particles can be separated and balanced under the fluctuation influence of the feeding flow of the dense medium suspension.

The invention discloses composite leather and manufacturing equipment thereof, and relates to the technical field of composite leather manufacturing, the composite leather comprises a composite leather body, the composite leather body comprises a leather pre-finished product and a leather finished product formed by pressing a fabric base layer, and the leather pre-finished product is formed by pressing an artificial leather layer and a waterproof breathable layer. Manufacturing equipment of composite leather comprises a rack, a discharging roller piece, a pressing piece, a finished product collecting roller and two gluing assemblies are installed on the rack, and the discharging roller piece is used for conveying an artificial leather layer, a waterproof breathable layer and a fabric base layer. According to the composite leather and the manufacturing equipment thereof, through cooperation of the discharging roller piece, the pressing piece and the gluing assembly, it is effectively guaranteed that all layers of the composite leather are firmly bonded, the overall structure is stable, and therefore the quality of a composite leather finished product is guaranteed; the requirements of different application scenes on the physical properties (such as strength, durability and the like) and the functions (such as water resistance, air permeability and the like) of the composite leather can be met.

The utility model relates to aquatic products breeding equipment technical field especially fish breeding is with feed screening device, solved the feed screening device in the mixing process lack of effective stirring structure, leading to the feed component mixed uneven and the problem that the secondary screening mechanism is not set and causes the pelletization granule too big influence fish feeding. The device includes rotating frame and mixing bin, and the mixing bin sets up in the inner top of rotating frame, and both sides of mixing bin are with the inside rotation connection of rotating frame, and the one side top of rotating frame is provided with the rotating module for and the cooperation of mixing bin. The utility model discloses through the cooperation of stirring rod and cutting blade and realizes even mixing and crushing, and promotes the evenness of feed, and through the setting of screening bin and collecting bin carries out secondary screening and centralized collection to the feed after mixing, removes the caking and big granule.

The invention relates to an outer fin reinforced condenser pipe which comprises a pipe body and outer fins integrally formed with the pipe body, materials on the pipe body extend in the radius direction of the pipe body and spirally extend on the outer surface of the pipe body around the pipe body, and the thicknesses of the two sides of the outer fins are gradually reduced outwards in the radius direction of the pipe body. A spiral channel is formed by a gap between every two adjacent outer fins; fin top grooves are formed in the top ends of the outer fins, and the fin top grooves are formed in the spiral extending direction of the outer fins at intervals; wing tips are arranged on the side edges of the outer fins, and the wing tips are arranged at intervals in the spiral extending direction of the outer fins; an internal thread rib integrally formed with the pipe body is arranged on the inner surface of the pipe body in a protruding mode. The sharp fin tips are additionally arranged on the outer fins, the surface tension of a liquid film of condensate is further damaged through the fin tip structures, the thickness of the liquid film is reduced, the heat resistance outside the pipe is reduced, meanwhile, the heat exchange area is effectively increased, and the heat exchange effect outside the pipe is further improved.

This invention relates to the field of membrane separation process control technology, and provides a full-membrane method for concentrating and purifying iron phosphate by makeup water reuse regulation. The system includes a white material tank, a pre-concentration and washing unit, an intermediate white material storage tank, a washing and concentration unit, and a purified white material storage tank connected in sequence. It also includes a white material analysis module that uses solid content uniformity as a prerequisite check combined with conductivity distribution characteristics to determine the membrane inlet status into four types: normal material inlet, abnormal material flow, localized abnormal mixing, or overall high salt load. A membrane segment evaluation module assesses the effectiveness of makeup water using both desalination release degree and filtration impedance as dual indicators. Based on this, a tiered decision-making module determines the average makeup water strategy for the entire membrane segment or localized makeup water strategies and allocates makeup water to different membrane segments based on effectiveness. This system, through the coordinated control of accurate membrane inlet status identification and quantitative assessment of makeup water effectiveness, significantly reduces energy waste and concentration load caused by ineffective makeup water.

The present invention relates to a method for preparing a carbonyl intermediate by electrocatalytic oxidation of a nickel-vanadium nanosheet catalyst. The method adopts a flow-type electrolytic cell for reaction. In the anode chamber, the nickel-vanadium nanosheet catalyst is used as a working electrode, and a reactant alcohol intermediate, a mixed solvent and a nitroxide free radical are added and stirred evenly; in the cathode chamber, a nickel plate is used as a counter electrode, an alkaline solution is used as a cathode liquid, and the anode and cathode liquid storage chambers are pumped into a reactor through a circulation pump to start an electrocatalytic oxidation reaction. After the reaction is completed, the reaction liquid is cooled and then an organic solvent is added for extraction, and the organic layer is distilled under reduced pressure to obtain a carbonyl intermediate compound. The transition metal nickel-vanadium catalyst used in the present invention has low cost, avoids the consumption of rare precious metals, and solves the technical problems of high cost, high environmental pollution, low yield, long production cycle, etc. of the process route for preparing carbonyl intermediate compounds in the current process, and has the advantages of low reaction cost, high yield, short production cycle, high time-space yield, etc.

The present invention discloses a method for converging and removing the immersion boundary flow field of an IC lithography device based on an organic medium. A super oleophobic coating is uniformly sprayed on the part where the immersion liquid on the substrate of the IC lithography device is not sufficiently recovered, and then a heat treatment is performed; the immersion boundary flow field is filled with the immersion liquid through an immersion supply system to complete the converging; at the same time, the immersion liquid flows out for recovery; the immersion liquid is recovered through the immersion supply system until it completely flows out, and the removal is completed. The present invention sprays a super oleophobic coating on the part where the immersion liquid is not sufficiently recovered, which can increase the contact angle of the fluid on the surface of the substrate without affecting the exposure conditions and the fluid properties, improve the flow characteristics of the fluid on the substrate, eliminate fluid residues, and achieve the effects of uniform and complete filling and complete recovery of the organic medium; the present invention does not need to change the structure of the substrate itself, improves the use efficiency of the organic medium, reduces costs while improving production efficiency, and ultimately improves the exposure quality.

The invention relates to the technical field of LNG (Liquefied Natural Gas) sampling analysis, and discloses an LNG low-temperature sampling analysis device which comprises a gas analyzer, the gas inlet is formed in the gas analyzer; the gas storage tank is mounted on the gas analyzer and is arranged opposite to the gas inlet; the support is fixed on the gas storage tank, and a penetrating opening is formed in the support; the air pipe is fixed at the top end of the air storage tank and is communicated with the interior of the air storage tank; the valve is mounted on the air pipe; and the air supply structure is arranged in the air storage tank. Automatic sample feeding of natural gas is achieved through a mechanical structure, extraction is conducted without depending on an air pump, so that the overall cost of detection equipment is reduced, meanwhile, the design avoids the harmful effects such as noise, vibration and energy consumption possibly generated during operation of the air pump, the comfort level of the detection environment is improved, and the detection efficiency is improved. And the reliability and the stability of the equipment are further enhanced.