31results about How to "Ensure process stability" patented technology

The invention belongs to the technical field of stirrer control, and discloses a stirrer rotating speed control model, method, device, equipment and medium, and the model comprises a Transform variant module, a multi-mode cross attention module and a full connection module. The Transform variant module is constructed on the basis of a local time window self-attention mechanism, and the local time window self-attention mechanism is used for capturing a short-term local dependency relationship of material characteristic data on different time steps; the multi-modal cross attention module is constructed on the basis of a cross attention mechanism, and the cross attention mechanism is used for performing multi-modal fusion on the feature data output by the Transform variant module so as to capture relevance among different material characteristics; and the full connection module is used for obtaining the rotating speed of the stirrer according to the characteristic data output by the multi-mode cross attention module and outputting the rotating speed of the stirrer. The stirring speed can be flexibly adjusted, and the uniformity of materials and the process stability are ensured.

The invention relates to the field of aluminum alloy die casting, in particular to a die casting device for aluminum alloy shell machining, which comprises a base, and a tail plate is mounted on one side above the base. The movable mold plate reciprocates in the mold closing process to drive the push rod to drive the piston to move in the sealing tank, so that alternate change of positive pressure and negative pressure is formed in the sealing tank; in the process, the PCL control cabinet cooperatively controls opening and closing of the feeding hole and the discharging hole, automatic extraction and conveying of the liquid raw materials are achieved, and finally the liquid raw materials are injected into the charging barrel. And then, the injection cylinder drives the injection rod to inject the raw materials into the mold closing cavity at high pressure to complete die-casting forming, and the full-automatic process from feeding to forming is achieved. In addition, the screw is driven to move axially by rotating the internal thread cylinder, the initial position and stroke of the piston can be adjusted, and therefore the single suction amount of the sealing tank is changed, the sealing tank can flexibly meet the differentiated requirements of different die-casting parts for the raw material amount, and accurate and controllable feeding is achieved.

This invention provides an intelligent analysis system for photoelectric detection spectral data based on deep learning, belonging to the fields of photoelectric detection, spectral data analysis, and deep learning application technology. The system includes core units such as a spectral data acquisition unit, a preprocessing unit, a feature extraction unit, and a deep learning analysis unit, as well as auxiliary units for anomaly detection and data storage, forming a closed-loop architecture of acquisition-processing-analysis-output-optimization. It improves data quality through step-by-step preprocessing algorithms, reduces computational load by adaptively selecting key features, deeply mines spectral patterns using a model that integrates convolutional neural networks and attention mechanisms, achieves rapid scenario adaptation through transfer learning, and dynamically optimizes model parameters based on a feedback mechanism. The system solves the problems of low accuracy, poor adaptability, and long training cycles in traditional spectral analysis, achieving accurate, efficient, and intelligent spectral data analysis, and is suitable for various photoelectric detection scenarios such as qualitative and quantitative analysis of substances and environmental monitoring.

The invention relates to the technical field of optical devices, in particular to a BOX optical device structure for a 50G PON (Passive Optical Network), which mainly comprises a flexible board, a shell and an optical fiber interface component, the optical fiber interface component is connected to one end of the shell, the flexible board is arranged in the shell, a plurality of high-speed laser chips and detector chips are connected onto the flexible board, and the high-speed laser chips and the detector chips are connected onto the shell. The high-speed laser chip is connected with a laser, and the detector chip is connected with a receiving end optical assembly. By means of the structure, the BOX scheme design is adopted, the sealing performance is better, and the valve can better adapt to the complex application environment. The structure design is simplified, production and manufacturing are easier, the product precision and the process stability can be guaranteed, the product yield can be improved, and production and manufacturing are better. According to the technical scheme, heat dissipation of the three lasers is regulated and controlled through the same TEC, and finer regulation and control can be achieved through the thermistor. According to the overall heat dissipation scheme, the overall heat dissipation requirement of the BOX can be met through cooperation of the bottom of the BOX and the heat conduction material.

The invention relates to the technical field of circuit board film pasting, and particularly discloses a PCB film pasting method and film pasting equipment. The method comprises the following steps: assembling a pressing assisting layer and a dry film layer on PCB film pasting equipment; the pressing assisting layer and the dry film layer are conveyed through PCB film pasting equipment, a hot pressing roller on the PCB film pasting equipment is matched with the hard layer in a rotating mode, the pressing assisting layer abuts against the dry film layer, and the soft layer is attached to the polyethylene protective film; the production state of the PCB film pasting equipment is debugged, and debugging of the PCB film pasting equipment is stopped until wrinkles or bubbles do not appear between the auxiliary pressing layer passing through the hot pressing roller and the dry film layer within the preset distance; the PCB film pasting equipment is used for conveying the board to be pasted with the film, the board face of the board to be pasted with the film is attached to the dry film photosensitive layer, and the hot pressing roller is controlled to conduct hot pressing on the dry film layer to the board to be pasted with the film; and taking down the pressing assisting layer passing through the hot-pressing roller to obtain a processed finished product. According to the method, accurate lamination of the dry film layer on the to-be-laminated plate is realized by means of the pressure-assisting layer, and the product yield of film lamination operation is improved.

The invention relates to a helium supply device and method for an electrostatic chuck, the helium supply device comprises a bottom plate, a helium inlet pipeline and a helium outlet pipeline are fixedly arranged on the bottom plate, and the helium inlet pipeline and the helium outlet pipeline are connected through a mass pressure controller; the helium outlet pipeline comprises an electrostatic chuck purging pipeline and a sucking pump group pipeline which are arranged in parallel; the helium gas inlet pipeline comprises a pressure regulating valve, an electronic pressure gauge and a first pneumatic valve which are sequentially arranged along the gas inlet direction; a second pneumatic valve is arranged on the electrostatic chuck purging pipeline, and a third pneumatic valve is arranged on the sucking pump set pipeline. Uniform heat purging and temperature control on the bottom of the electrostatic chuck can be intuitively and effectively realized in pneumatic and electric control modes.

The present application relates to an electrode composition comprising: an electrode active material; a conductive material; and a binder, an electrode slurry, an electrode, a lithium secondary battery including the electrode composition, and a method for preparing the electrode composition, wherein the binder is composed of a linear polymer and has a pH of 5 or more and 7 or less when measured at 25 DEG C. The electrode composition provides an additional advantage of simultaneously preventing the generation of hydrogen gas due to a surface oxidation reaction during the preparation and storage of the electrode composition and / or the electrode slurry containing the polymer binder, while providing an advantage of obtaining excellent adhesive strength by adjusting the pH of the polymer binder itself.

The invention discloses horizontal magnetron sputtering thin film deposition equipment capable of reducing wafer surface damage, and relates to the technical field of thin film deposition equipment. Comprising a reaction gas input system, a vacuum system, a control system and a rack, a reaction cylinder and a filter cylinder are sequentially arranged in the rack, the filter cylinder is provided with a gas inlet and a gas outlet, the gas inlet and the gas outlet are connected with the reaction gas input system and the upper end of the reaction cylinder through pipelines respectively, and the reaction cylinder is connected with the vacuum system through a pipeline. A magnetic control part is mounted on the upper side of the reaction cylinder, a target material is mounted below the magnetic control part, a base is mounted below the target material, a supporting shaft is arranged on the lower side of the base, and a detection cylinder sleeves the outer side of the supporting shaft; the base is used for preheating and bearing a wafer, the vacuum system enables the interior of the reaction cylinder to form vacuum, the reaction gas input system conveys reaction gas into the reaction cylinder, and the detection cylinder detects and adjusts the position of the base.

The invention provides an isolation structure frame package of SOP300mil 8L, comprising a SOP300mil8L lead frame unit; 140 lead frame units are arranged in a matrix on the SOP300mil 8L lead frame unit; every two lead frame units form a group in the horizontal direction, a flushing channel groove is provided between the two lead frame units in each group, internal force elimination grooves are provided on both sides of each group of lead frame units in the horizontal direction, and process grooves are provided on both sides of each group of lead frame units in the vertical direction; the lead frame unit comprises a first base island and a second base island arranged in sequence from top to bottom, and inner pins are used for electrical connection; first base island coplanarity balancing platforms are provided on both sides of the first base island, and second base island coplanarity balancing platforms are provided on both sides of the second base island; base island support ribs are provided on the first base island and the second base island; an IC chip, a first digital isolation chip and a second digital isolation chip are installed in a chip mounting area, and a plastic package is coated on the outside of the first base island and the second base island.

The present invention discloses a horizontal magnetron sputtering thin film deposition device for reducing wafer surface damage, and relates to the technical field of thin film deposition devices. The device comprises a reaction gas input system, a vacuum system, a control system and a rack, wherein a reaction tube and a filter tube are sequentially arranged in the rack, an air inlet and an air outlet are arranged on the filter tube, the air inlet and the air outlet are respectively connected to the reaction gas input system and the upper end of the reaction tube through pipelines, the reaction tube is connected to the vacuum system through pipelines, a magnetic control is installed on the upper side of the reaction tube, a target material is installed below the magnetic control, a base is installed below the target material, a support shaft is arranged on the lower side of the base, and a detection tube is sleeved on the outer side of the support shaft; the base is used for preheating and carrying wafers, the vacuum system forms a vacuum inside the reaction tube, the reaction gas input system transports the reaction gas into the reaction tube, and the detection tube detects and adjusts the position of the base.

This invention discloses a culture medium for the biosynthesis of indigoidine and its application, belonging to the field of microbial fermentation and synthetic biology technology. Addressing the problems of low yield, insufficient precursor supply, byproduct accumulation, and poor scale-up stability in existing culture media for indigoidine fermentation, this invention provides a core culture medium system. This medium, per 1L, includes: 10-50g carbon source, 5-20g nitrogen source, 10-30g L-glutamine, and 0.1-20g inorganic salts, with optional addition of 0.1-20mL trace element salt solution and / or vitamin components. The pH is 6.0-7.5. The carbon source is selected from glucose, glycerol, sucrose, dextrin, or combinations thereof; the nitrogen source is selected from ammonium sulfate, yeast extract, peptone, or combinations thereof. This culture medium can significantly increase the yield of indigoidine synthesized by recombinant *E. coli* and effectively inhibit acetic acid accumulation. In a 5L fermenter, compared with LB medium, this medium can increase the indigoidine yield by at least 80% while reducing the acetic acid concentration in the fermentation broth by more than 60%, showing good prospects for industrial application.

The application discloses a die casting machine multi-process parameter cooperative control system and method, and relates to the technical field of casting equipment control. The system, when the mold is in a mold thin state, first completes mold thickness cooperative initialization, then cooperatively controls mold thickness and mold clamping force parameters based on the result to determine the minimum safe mold clamping force; when the mold is in a mold thin state, the mold thickness change rate under the minimum safe mold clamping force is monitored in real time, and progressive cooperative control of the mold thickness is performed; when the mold is in a mold thick state, the mold thickness and pressure parameters are cooperatively controlled according to the progressive cooperative control result to determine the optimal mold clamping force peak value; when the mold is in a mold thick state, fluctuation data of the casting forming process under the optimal mold clamping force peak value are collected, and the cooperative matching degree of the mold thickness and the fluctuation data is quantified, so that full-process multi-process parameter dynamic cooperation from mold closing initialization to forming process verification is realized.

The invention discloses an electrolytic manganese residue-based active cementing material and a preparation method thereof, and belongs to the technical field of solid waste resource utilization. Raw materials including electrolytic manganese residues, red mud and carbide slag are dried, crushed and evenly mixed and then calcined at the temperature of 1080-1180 DEG C, a calcined product is cooled and ground, and the electrolytic manganese residue-based active cementing material is obtained. The preparation process of the electrolytic manganese residue-based active cementing material meets the requirements specified by the HJ 1241-2022 Technical Specification for Manganese Slag Pollution Control. The performance of the obtained cementing material product meets the requirements of GB / T 18046-2017 Granulated Blast Furnace Slag Powder Used in Cement, Mortar and Concrete S75 slag powder, and the cementing material can replace part of cement to be used in concrete, so that efficient resource utilization of solid wastes such as electrolytic manganese residues and the like is realized.

The invention discloses a positive electrode / spray head separated double-Z-axis electrofluid micro-jet 3D printing device which comprises a double-Z-axis lifting mechanism, an injection pump, an injector and a positive electrode and spray head separation assembly. The double-Z-axis lifting mechanism comprises an electric Z-axis lifting assembly and a hand wheel lead screw Z-axis lifting assembly. The injection pump is installed at the lifting end of the hand wheel lead screw Z-axis lifting assembly. The injector is mounted on the injection pump through a clamp; the anode nozzle separation assembly comprises a metal nozzle, an insulating interlayer and a metal anode structure; the metal nozzle is installed at the bottom of the injector, and the metal anode structure is installed at the lifting end of the hand wheel lead screw Z-axis lifting assembly through the insulation installation frame. The distance between the metal spray head and the receiving substrate can be conveniently adjusted, the problems of spray head blockage, excessive material supply and the like can be solved at any time in the electrofluid micro-jet process, meanwhile, the breakdown phenomenon is remarkably reduced, the electrofluid micro-jet process stability is guaranteed, and the printing effect and quality are improved.

The invention discloses an intelligent composite material heating system for realizing low-temperature uniform curing, which comprises a uniform planar composite material heating actuator and an industrial edge computing controller, and is characterized in that the heating actuator is a flexible whole formed by compounding multiple layers of functional materials through hot pressing and is divided into a plurality of independent circuit partitions; and a film temperature control sensor is embedded in each subarea. The controller runs a self-adaptive control algorithm, and the flow of the algorithm comprises the following steps: system self-learning and model identification; subarea adaptive control and global thermal field collaborative equalization are carried out; and environment disturbance feedforward compensation. According to the heating system, through combination of a planar uniform heat source and partition intelligent balance control, high-uniformity temperature control within + / -1.0 DEG C on a large heating area during low-temperature curing below 85 DEG C is achieved, the steady-state precision is within + / -0.3 DEG C, the anti-interference capacity is high, energy consumption is remarkably reduced, and high-quality low-temperature curing manufacturing of composite materials is powerfully supported.

The invention discloses a laser-assisted MCED electrochemical deposition method and an inclined cantilever beam preparation method, and the method comprises the steps: S1, carrying out laser-assisted experiment simulation on a glass microprobe tip in an MCED system through COMSOL software to obtain correlation characteristics of temperature field change and deposition rate of the glass microprobe tip under different laser parameters; s2, after a stable electrolyte droplet bridge is formed in the MCED system, a laser-assisted assembly is started; s3, the droplet bridge form, the deposition point form and the deposition area temperature are observed in real time based on a temperature-vision system; and S4, the MCED central controller realizes regulation and control on the shape of the liquid drop at the tip of the glass microprobe based on coordination in the step S3, the shape of the liquid drop bridge is kept consistent, and the preparation of the micro-nano structure is rapidly completed on the substrate. According to the MCED electrochemical deposition method based on laser assistance and the inclined cantilever beam preparation method, the deposition rate is increased while the process stability is guaranteed, micro-nano manufacturing is completed, and the MCED technology is promoted to be applied and developed to industrialization.

This application discloses an on-board oxygen supply device and method, and a vehicle. The on-board oxygen supply device includes an air compressor, which is suspended from the vehicle floor and used for filtering and compressing air; an oxygen chamber molecular sieve assembly, which is connected to the air compressor to receive compressed air and perform gas separation to produce oxygen; and a first oxygen delivery pipe, the inlet end of which is connected to the oxygen outlet of the oxygen chamber molecular sieve assembly, and the outlet end of which is connected to the vehicle's interior cavity. This on-board oxygen supply device suspends the air compressor from the vehicle floor, achieves air separation and oxygen production through the oxygen chamber molecular sieve assembly, and delivers the oxygen to the vehicle's interior cavity through the first oxygen delivery pipe. The structure and layout are reasonable, which can not only stably realize the oxygen production and supply function and ensure the health needs of drivers and passengers, but also effectively reduce equipment operation interference and improve driving comfort.

The invention relates to a TIG (Tungsten Inert Gas) automatic welding pulse phase control method based on time sequence molten pool recognition. A dynamic image of the molten pool is obtained through a high-speed visual sensor, and multi-dimensional feature quantization of the front edge curvature, the rear edge liquid-solid interface gradient, the center gray scale standard deviation and the like of the molten pool is achieved in combination with self-adaptive filtering and feature extraction. A lightweight CNN-LSTM hybrid network is utilized to output a normalized base metal melting index, a molten pool expansion rate and a fillable confidence coefficient in real time, and then a continuous molten pool dynamic phase angle is generated based on an arc tangent function model. After the phase angle and the current phase offset are mapped, FPGA hardware double buffering processing is carried out, microsecond pulse current phase adjustment is achieved, and the arc stability is improved through an S-shaped acceleration limiting measure. According to the scheme, the molten pool state sensing precision and the welding process control real-time performance are effectively improved, and collaborative optimization of welding stability and filling adaptability is achieved.

The invention provides a turnover mechanism and method for a substrate clamping plate in a vacuum environment, and relates to the field of semiconductor manufacturing. The mechanism comprises an overturning cavity, and an overturning frame and an overturning support assembly which are arranged in the overturning cavity, and the overturning support assembly comprises a first substrate clamping plate and a second substrate clamping plate which are oppositely arranged. The overturning driving assembly is arranged outside the cavity and drives the overturning frame to rotate through the vacuum magnetofluid sealing piece. The clamping plate opening and closing assembly comprises an elastic piece arranged on the support and an external clamping opening driving piece, and the driving piece overcomes elastic force through the corrugated pipe so as to open and close the clamping plate. The driving assembly is externally arranged, so that the problems of heat dissipation and vibration of the vacuum motor are solved, and the cost is reduced; and in combination with an elastic clamping and lifting structure, the sheet taking and placing efficiency and the overturning precision are improved.

The invention relates to a manufacturing method for accurately arranging multi-core optical fibers, which is realized through an auxiliary assembly device body, a plurality of fixing columns are arranged on a platform of the auxiliary assembly device body in a longitudinal row, a Y-axis sliding rail on the platform is in sliding connection with an XZ-axis movement sliding table, and a microscope is fixedly arranged at the upper end of the XZ-axis movement sliding table; the outer circumferential end of an objective lens of the microscope is connected with an annular illuminating lamp, and the upper end of a fixing column is fixedly provided with a front-end limiting flange fixing clamp, a tail-end limiting flange fixing clamp and a shaping limiting flange fixing clamp which are axially connected into a whole. And the central axes of the six through holes of the front end limiting flange, the six through holes of the tail end fixing flange and the five equilateral holes of the shaping limiting flange are consistent. According to the invention, an accurate limiting array hole mode is adopted to replace a pure capillary inner wall mode for limitation, and optical fibers with different attributes or different outer diameters can be arranged according to a specific sequence.

The utility model discloses a kind of material composite hot-pressing device, it relates to hot-pressing device technical field, the device is placed in U-shaped stopper by bearing and by limit bolt abutment limit, ensure that third gear and second gear stable meshing, first gear is driven by speed reducer, and second gear and third gear transmission, drive first gas expansion axle to rotate steadily inside bearing, and cooperate with sleeve paper tube to carry out isolation film winding, realize the recycling of composite material isolation film before hot-pressing, effectively reduce production cost, after hot-pressing side setting second gas expansion axle and sleeve another volume isolation film, after hot-pressing composite material is isolated and wound again protection, avoid material surface damage or sticking after hot-pressing, further improve finished product quality, the setting of magnetic-powder brake can accurately control the unwinding speed of isolation film, effectively prevent tension fluctuation caused by unwinding too fast or too slow, ensure that winding neatness and process stability.

This utility model relates to the field of waste heat recovery technology for air compressors, and discloses a waste heat recovery system for air compressors. The heat exchange medium inlet of the heat exchange tube bundle on the waste heat recovery heat exchanger is connected to the exhaust port of the air compressor body. The heat exchange tube bundle is spiral-shaped and has a horizontal U-shaped structure. The inlet and outlet of the heat medium on the waste heat recovery heat exchanger are connected to the outlet of the circulating water pump and the inlet of the heat storage tank, respectively. The waste heat recovery heat exchanger is divided into upper and lower layers by a partition component. Each of the upper and lower heat exchange chambers is equipped with baffles that match the spiral direction of the heat exchange tube bundle. The heat exchange tube bundle increases the contact area and contact time between the heat medium and the heat exchange medium, while the baffles guide the flow of the heat medium and increase the heat exchange contact time within the waste heat recovery heat exchanger. Through the orderly flow channel, baffles, and spiral tube bundle design, heat exchange efficiency is improved and the medium contact time is extended, achieving energy saving, consumption reduction, and space saving.

The invention relates to the technical field of stirring kettles, and in particular to a stirring kettle for producing amino acid water-soluble fertilizers, comprising a stirring kettle body, a fixed cover connected and fixedly arranged on the stirring kettle body, a connecting pipe connected and fixedly arranged on the bottom end of the fixed cover, a rotating frame rotatably connected and arranged in the fixed cover, a plurality of storage covers connected and fixedly arranged on the rotating frame, a stirring mechanism rotatably connected and arranged in the storage cover, a flushing mechanism rotatably connected and arranged in the storage cover, a water guide drive seat connected and fixedly arranged on the outer wall of one side of the storage cover, and a water guide frame slidably arranged on the storage cover. When the amino acid water-soluble fertilizer is produced by using the stirring kettle, by arranging multiple types of stirrers in the fixed cover, the stirring mode can be flexibly adjusted according to different material properties and process requirements to achieve different stirring effects, improve the mixing uniformity of materials, improve the mass transfer rate of materials, control the reaction rate, etc., to ensure that the fertilizers are mixed uniformly, the quality is stable and the production process is efficient.

The utility model relates to the technical field of safety belt mandrel processing, and discloses a special monitoring system for a mandrel fine blanking cutting die, which comprises a lower die holder, a photoelectric sensor and a proximity switch, safety belt mandrels are connected through byproduct connecting pieces, and each safety belt mandrel is further connected with a byproduct A; the four photoelectric sensors are used for carrying out blanking detection on the cut by-products A; the three proximity switches are used for conducting blanking detection on the cut-off by-product connecting pieces. The signal output ends of the photoelectric sensor and the proximity switch are connected with the signal input end of the PLC, and the PLC receives input signals from the photoelectric sensor and the proximity switch and processes the signals. The PLC judges whether the by-product A and the by-product connecting piece are punched off or not according to the received signals, if not, the PLC triggers the cutting die to repeatedly and continuously move downwards again, the punching process is completed, and the punching quality and the process stability are guaranteed.

The invention relates to a polyolefin polymer and a polymerization system and a polymerization method for preparing the polyolefin polymer, the polyolefin polymer comprises a core part and a shell part, the density of the core part is 0.857-0.910 g / cm < 3 >, the density of the shell part is 0.890-0.940 g / cm < 3 >, and the density of the shell part is higher than that of the core part.

The invention relates to the technical field of organic chemistry, in particular to a method for purifying a melogabalin besylate key intermediate, which comprises the following steps: firstly, decolorizing for 1-3 hours in a 0.5-1 mol / L organic solution at 45-65 DEG C by using 2-10% activated carbon to effectively remove colored impurities, trace isomers and unknown byproducts and remarkably improve the initial purity and appearance of the intermediate; then, for the chiral salt intermediate, carrying out temperature-controlled pulping at 15-35 DEG C by using an organic solvent of which the volume is 10-20 times that of the chiral salt intermediate, so that residual non-salified impurities and inorganic salt are dissolved in the solvent, and the target intermediate is separated out in a uniform crystal form, thereby deeply removing the residual impurities; the two-step method is mild in condition and simple and convenient to operate, the chemical and optical purity of the intermediate is synergistically improved, and the yield, quality and process stability of melogabalin besylate in subsequent synthesis are guaranteed.

The utility model provides a powder metallurgy mould with powder anti -fly structure relates to powder metallurgy mould technical field, solved the powder metallurgy mould of commonly used in the use process, usually do not have good anti -fly structure, because material is in powder shape, when putting into the mould and processing, material can be affected and appear fly phenomenon, and then cause material waste's problem. A kind of powder metallurgy mould with powder anti -fly structure, it include: the fixed base one side is fixedly installed with connecting side seat;The connecting side seat top is slidably provided with storage tank;Through the setting of storage tank, by starting the down pressure cylinder on storage tank, its piston rod drives down pressure plate to move downward with constant pressure, and accurate pre -pressing force is applied to loose material, this step not only eliminates the gap between material, also improves filling density, effectively inhibits material fly, reduces raw material loss and maintains workshop environment clean.

The present disclosure relates to a method for preparing a three-dimensional packaging structure, which belongs to the field of packaging and can achieve high-efficiency heat dissipation of the prepared three-dimensional packaging structure. A method for preparing a three-dimensional packaging structure, the three-dimensional packaging structure includes a plurality of stacked chips, microchannels located between the stacked chips, and a micropump that promotes the circulation of coolant in the microchannels to bring heat from the inside of the three-dimensional packaging structure to the outside, the method comprising: preparing the microchannels and interlayer electrical interconnections on at least one surface of each layer of chips; bonding the layers of chips to obtain a three-dimensional package; and connecting the three-dimensional package to the micropump.

The utility model discloses a liquid level control device for a main condensing evaporator of an air separation device, which particularly relates to the field of gas separation and comprises a main condensing evaporator liquid level detector, a liquid oxygen flow detector and a liquid oxygen storage tank flow control regulating valve which are assembled at the output end of the air separation device. Wherein the output end of the main condensation evaporator liquid level detector is connected with a liquid level PID control module; the output end of the liquid oxygen flow detector is communicated with a flow PID control module, and the input end of the liquid oxygen storage tank flow control regulating valve is connected with a low-selection PID control module. According to the utility model, the stable control of the main cooling liquid level can be realized, the working condition fluctuation of the air separation device caused by the main cooling liquid level fluctuation is reduced, and the problems of long delay time and large liquid level fluctuation of the main cooling liquid level adjustment under the stable and variable load working conditions of the air separation device are solved.