116results about How to "Strict requirements" patented technology

The invention discloses a full-automatic pipetting system based on programmable logic, the system comprises a computer program, a programmable pipetting system programming module, a programmable pipetting system operation module and a computer device, and the computer device is controlled by the computer program. And by cooperating with the programmable pipetting system programming module and the programmable pipetting system operation module, accurate control and operation of the full-automatic pipetting system are realized. According to the invention, through programmable pipetting operation, the problem of insufficient automation of the whole process in the prior art is solved, through automatic accurate configuration of reagents and programmed pipetting operation steps and support of automatic switching and integrated replacement of suction heads, the pipetting process can be fully automatically operated, manual operation intervention is avoided, and the production efficiency is improved. The pipetting efficiency is greatly improved, and meanwhile, the high consistency and repeatability of the pipetting process are ensured.

The invention discloses an elevator guide rail installation and calibration device and method.The device comprises a quadrilateral structure composed of a wall supporting mechanism and a calibration mechanism, the wall supporting mechanism comprises a second linear module, and the second linear module is hinged to two first linear modules; the calibration mechanism comprises a mounting frame; the second linear module is hinged to the two first linear modules, and the two first linear modules are hinged to the mounting frame, so that the second linear module and the mounting frame form a quadrilateral structure, and the wall supporting mechanism and the calibration mechanism form the quadrilateral structure. The labor intensity of operators can be relieved, the installation period is shortened, the installation precision of the guide rail is remarkably improved, and high-speed, stable and safe operation of an elevator is guaranteed; the problem of stress concentration caused by clamping the guide rail by a hard-connected calibration device is avoided, stress concentration generated during clamping of the structure can be released, structural deformation generated by the calibration device in the assembling process is relieved, the parallelism requirement of guide rail calibration can be met, and the calibration precision is high.

The invention provides a grinding, spraying and rolling composite surface machining method for a gear tooth surface, which comprises the following steps of: determining the overall maximum elastic deformation of a gear to obtain a modified theoretical involute gear tooth profile; by means of the micro-line-segment theory, a micro-line-segment type involute gear tooth profile is obtained; by means of non-linear smooth fitting, a final modified involute gear tooth profile is obtained, and an initial gear is obtained through machining; on the basis of the initial gear, a gear shot blasting impact model is built, and a shot blasting gear is obtained; and on the basis of the shot blasting gear, a gear finishing and grinding model under gear tumbling finishing machining is built, and a finished gear is obtained. Grinding, shot blasting and barreling finishing are combined, through process coupling design, the overall performance of the gear is improved, higher manufacturing precision is achieved, the failure risk is reduced, the service life of the gear is prolonged, and the gear has the practical application value.

The invention relates to a non-magnetic concrete frame structure with additional aluminum ribs and FRP ribs and non-magnetic concrete. The concrete frame structure comprises FRP beam longitudinal ribs, the additional aluminum ribs, FRP column longitudinal ribs and the non-magnetic concrete. The additional aluminum ribs are anchored at the two ends of the FRP beam longitudinal bars and the top ends of the FRP column longitudinal bars respectively, the anchoring length needed by the FRP bars is effectively reduced, and the FRP beam longitudinal bars and the FRP column longitudinal bars are arranged in the non-magnetic concrete in a non-bending mode. The non-magnetic concrete is prepared from the following components in parts by weight: 360 to 500 parts of non-magnetic cement, 700 to 800 parts of non-magnetic fine aggregate, 950 to 1200 parts of non-magnetic coarse aggregate, 150 to 180 parts of water, 0.2 to 0.4 part of water reducing agent and 0 to 0.2 part of functional additive, and the residual magnetism intensity of each component is lower than 1nT. The FRP bars with the remanence intensity smaller than 0.2 nT and the non-magnetic concrete with the remanence intensity smaller than 1 nT are adopted, and interference of magnetic substances (remanence reaches thousands or even tens of thousands of nT) in conventional steel bars and concrete on high-precision equipment and instruments is effectively avoided. And the service magnetic stability of the structure in the life cycle is effectively guaranteed, and powerful support is provided for development and application of the preceding scientific research technology.

The invention discloses ultrahigh-performance premixed green concrete and a preparation method thereof. The concrete comprises the following raw materials in parts by mass: 375-430 parts of cement; 670 to 729 parts of sand; 830 to 900 parts of broken stone; 60 to 75 parts of fly ash; 45 to 55 parts of straw ash; 25 to 30 parts of silica fume; 10 to 15 parts of nano silicon dioxide; 30 to 55 parts of polyacrylic acid emulsion; 120 to 125 parts of water; 8-11 parts of a water reducing agent; 7-11 parts of an exciting agent; 1.5 to 2.3 parts of a defoaming agent; 7-10 parts of a shrinkage reducing agent; 13 to 20 parts of maleic acid modified attapulgite; 26 to 40 parts of cocamidopropyl betaine modified fiber; the cocamidopropyl betaine modified fibers are prepared by modifying fibers with cocamidopropyl betaine, and the cocamidopropyl betaine modified fibers are prepared from cocamidopropyl betaine; the fiber is selected from at least one of coconut fiber and ramie fiber. The concrete provided by the invention has the advantages of environmental protection, strong crack resistance and relatively high compressive strength.

The invention discloses a semi-cured adhesive insulating film, a preparation method, application and a use method thereof. The semi-cured adhesive insulating film comprises an upper organic silica gel layer, a lower organic silica gel layer and a middle polyimide film, wherein the upper organic silica gel layer and the lower organic silica gel layer are filled with heat-conducting filler; the organic silica gel layer is prepared from the following components in parts by weight: 6 to 8 parts of high-viscosity liquid organic silicon rubber, 2 to 3 parts of low-viscosity liquid organic silicon rubber, 0.5 to 0.8 part of hydrogen-containing silicone oil, 0.1 to 0.5 part of an inhibitor, 0.1 to 0.2 part of a platinum catalyst, 0.1 to 0.3 part of a silane coupling agent, 0.1 to 0.3 part of an organic silicon tackifier and 10 to 20 parts of nano spherical boron nitride powder; and 20-40 parts of aluminum nitride powder. The semi-cured insulating adhesive film is prepared by compositely filling the organic silica gel layers of the heat-conducting filler on the two surfaces of the polyimide film, and is small in occupied space, simple in assembly process, high in insulating reliability and low in use cost.

The invention discloses a process for reducing magnetic substances in battery grade lithium carbonate, and relates to the technical field of lithium battery materials, in particular to a process for reducing magnetic substances in battery grade lithium carbonate, which comprises the following steps: pretreatment of brine, inclined plate sedimentation, plate-and-frame pressure filtration, multi-medium filtration and security filtration; performing magnesium-lithium separation through an electric driving membrane, and performing high-efficiency lithium-magnesium separation through an ion selective electric driving membrane; refining reaction: deeply removing calcium, magnesium and sulfate ions by adopting sodium hydroxide and barium chloride solution; lithium carbonate is converted into crystals, and the crystals are converted through a sodium carbonate solution; demagnetizing treatment: reducing the content of magnetic substances in the lithium carbonate through a multi-section and multi-stage demagnetizing process; and crushing the product, and controlling the particle size of lithium carbonate through airflow crushing equipment. Various impurities, including silt, suspended solids, colloidal substances and magnetic substances, in the raw material brine are effectively removed through an optimized multi-layer filtering technology, ion selective electrically-driven membrane separation, a refining reaction and a multi-stage demagnetizing process.

The invention discloses a quick charging cable for a new energy charging pile, and relates to the technical field of new energy charging equipment, the quick charging cable comprises a plurality of conductor layers, insulating layers are sleeved among the outer surface walls of the plurality of conductor layers, filling layers are sleeved among the outer surface walls of the plurality of insulating layers, and temperature conducting layers are fixedly inserted among the inner surface walls of the filling layers. An isolation plate is fixedly inserted into the inner surface wall of the heat conduction layer, and a plurality of air holes are formed in one side of the outer wall of the isolation plate. According to the invention, through the interaction of all layers of materials, heat generated in the electric power transmission process can be effectively gathered to the center, heat dissipation is carried out in a wind power circulation mode, and under the cooperation of multi-layer isolation, internal and external heat isolation is realized, and the problem of interference caused by mutual circulation is avoided; the equipment guarantees the safety of the cable and the surrounding environment from the aspects of heat insulation, fire prevention and heat dissipation, greatly improves the operation stability of a charging system, and also guarantees the electrical safety in the charging process.

The invention discloses a smelting process of a special as-cast zinc alloy, which comprises the following steps: S1, when a crucible is filled, putting aluminum and zinc bulk materials above small bulk materials such as a magnesium elementary substance, an intermediate alloy and the like; s2, vacuumizing operation is carried out, so that the vacuum induction melting furnace is kept in a high-vacuum state; s3, the power is firstly increased, so that the temperature in the furnace is increased to a certain smelting temperature; when a sign of gas volatilization appears on the surface of the zinc alloy melt, starting to turn down the power so that the temperature in the furnace is reduced to a relatively stable smelting temperature state; s4, after natural cooling, the power is increased again, electromagnetic stirring is continuously conducted while heating continues, and refining operation is completed; and S5, after casting is completed, cooling is conducted for a certain time, and the special as-cast zinc alloy is obtained. According to the smelting technology, precise smelting and efficient refining of the zinc alloy are achieved, the mechanical property and corrosion resistance of the zinc alloy are effectively improved, and the requirement for the high-performance zinc alloy in the high-end manufacturing field can be met.

The invention relates to the technical field of steel pipe manufacturing, and discloses an extra-large-wall-thickness stainless steel seamless steel pipe for an ocean platform, and the steel pipe is manufactured by adopting the following manufacturing method: step A, smelting; step B, die casting; c, forging, wherein the steel ingot is forged into a round billet; d, perforating and rolling: heating the round steel, and perforating to prepare a hollow billet; e, heat treatment, wherein fine grain treatment is conducted on the pierced billet; f, cold rolling and passivation are conducted, specifically, the steel pipe subjected to heat treatment is fed into a cold-rolling mill for finished product rolling; g, inspection is conducted, specifically, the steel pipe is subjected to final inspection; the steel pipe comprises, but is not limited to, about 0.25% of Co, about 0.15% of V, about 0.10% of Cu and about 0.045% of P. By adopting a refining process of'three-removal of molten iron and intermediate frequency furnace pre-solution, AOD, RH and die casting 'and combining an RH vacuum treatment technology, the dehydrogenation rate is more than 80%, and the content of harmful elements is effectively controlled, so that the corrosion resistance of the steel pipe is remarkably improved.

The invention discloses a reinforcing steel bar sleeve grouting material for a high-strength micro-expansion fabricated concrete structure. The reinforcing steel bar sleeve grouting material is prepared from the following raw materials in parts by weight: 735 to 795 parts of cement, 15 to 85 parts of silica fume, 80 to 90 parts of lithium slag powder, 9 to 36 parts of magnesium slag powder, 500 to 800 parts of quartz sand, 100 to 400 parts of basalt sand, 9 to 12.6 parts of a water reducing agent, 0.9 to 4.5 parts of a retarder, 0.9 to 4.5 parts of a reinforcing agent, 0.6 to 1.2 parts of a de-foaming agent, 0.6 to 1.2 parts of a suspension stabilizer, 0.1 to 0.3 part of a plastic expanding agent and 45 to 72 parts of a UEA expanding agent. The grouting material disclosed by the invention has the advantages of high strength, micro-expansion, good fluidity, no bleeding, no segregation and the like, and meets the use requirements of an assembled concrete structure.

The invention belongs to the technical field of non-ferrous metal material processing, and particularly discloses a Ti575G titanium alloy bar and a preparation method and application thereof.The preparation method comprises the technological route of cogging forging, intermediate forging and forming forging, firstly, a large deformation technology above a phase transformation point is adopted, the thermal diffusivity of atoms under the high-temperature condition is fully utilized, and the thermal diffusivity of the atoms under the high-temperature condition is utilized; according to the method, the component and structure uniformity of a blank is greatly improved, then a repeated upsetting and drawing deformation mode is applied in a two-phase region, and meanwhile, the deformation uniformity of all positions of a bar is effectively improved by strictly controlling the temperature, the heat preservation time, upsetting and drawing deformation parameters and the like of each stage. The Ti575G bar prepared by the preparation method disclosed by the invention is uniform in component and structure, has matched strong plasticity and impact toughness characteristics, can completely meet strict requirements of wings, fuselage frames, undercarriages and weapon barrels of airplanes on the alloy bar, and is very suitable for industrial large-scale production.

The invention relates to the field of house buildings, and discloses a large indoor ski field thermal insulation engineering fireproof isolation belt setting method which comprises the following steps: S1, three-dimensional plane arrangement: positioning and typesetting fireproof isolation belts and fireproof isolation belt columns; s2, keels are installed, specifically, vertical keels and transverse keels are installed to serve as fireproof isolation belt columns, the vertical keels are perpendicular to the ground, the transverse keels are parallel to the snowways, and the vertical keels and the transverse keels are connected in a welded mode; s3, heat preservation and fireproof isolation belt installation, wherein the rock wool boards are fixed to fireproof isolation belt columns through mushroom nails, and the abutted seams are coated with sealant; a gap of 30 mm is reserved between the rock wool board and the PIR composite board; and S4, partition arrangement is conducted, specifically, partitions are arranged at the vertical keels and the transverse keels every 50 M, and a continuous fireproof isolation belt is formed. The PIR insulation board with the combustion performance of B1 grade and the special rock wool board with the combustion performance of A grade for fireproof isolation are scientifically combined, so that the dual functions of insulation and fire prevention are successfully realized.

This invention relates to the interdisciplinary field of mechanical engineering and optical inspection, and discloses a method and system for quality sorting of automotive stamping parts combined with optical inspection. The method includes: synchronous imaging by a high-speed linear array camera and a structured light projector via an encoder and photoelectric triggering device; fusing 3D point clouds and 2D images, and using a deep convolutional neural network for defect identification and quality grading; calculating the six-degree-of-freedom pose of the workpiece using an iterative nearest-point algorithm and principal component analysis; calculating the spatiotemporal parameters of sorting based on a predictive instruction generation module, and issuing dynamic control commands to multi-degree-of-freedom pneumatic push rods via a hard real-time communication bus to execute sorting. The system includes a synchronous triggering unit, an imaging unit, a defect identification unit, a pose calculation unit, a predictive instruction generation module, and a dynamic sorting execution unit. This invention achieves millisecond-level accurate identification and adaptive sorting, significantly improving detection accuracy, sorting efficiency, and system robustness.

The utility model relates to wetland filler technology field, and disclose a kind of wetland filler spreading and flattening device, it includes: mounting seat, the top of mounting seat is equipped with storage box, the top of mounting seat is equipped with auxiliary seat, the side of auxiliary seat is provided with auxiliary mechanism, the flattening mechanism includes the adjusting plate fixedly installed in one side of mounting seat and the mounting plate slidingly installed in one side of adjusting plate, adjusting seat is rotatably installed in the inside of mounting plate, flattening roller is rotatably installed in the bottom of adjusting seat, the utility model is equipped with the flattening mechanism, can effectively improve the efficiency and quality of wetland filler laying, can be fully flattened and handled to filler after spreading, guarantee filler laying uniform, can adapt the flattening demand of different thickness fillers, enhance device applicability, can more flexibly flatten and operate the filler of different regions, reduce flattening dead angle, improve flattening effect, make filler flattening operation more convenient.

The application discloses a power supply with an on-board rectification correction module, comprising an input filter module, a surge suppression module, a PFC rectification correction module and an output filter module; the input end of the input filter module inputs a 115Vac voltage; the output end of the input filter module is connected with the input end of the surge suppression module; the output end of the surge suppression module is connected with the input end of the PFC rectification correction module; the output end of the PFC rectification correction module is connected with the output filter module; and the output filter module can output a 260Vdc voltage. The 115Vac alternating current is converted into a pure and stable 260Vdc direct current output, the system tolerance to power grid surges and subsequent faults is significantly enhanced, and the strict requirements of the industrial, aviation and server fields on high-performance power supplies are met.

The invention relates to the technical field of investment casting, in particular to a low-thermochemical-activity ceramic core for investment casting and a preparation method of the low-thermochemical-activity ceramic core. The ceramic core comprises the following chemical components in percentage by weight: 70-90 wt% of fused quartz glass powder, 3-15 wt% of a thermal chemical reaction inhibitor and 7-15 wt% of a combined mineralizer. According to the low-thermochemical-activity ceramic core and the preparation method thereof, the thermochemical reaction inhibitor and the combined mineralizer are added, so that the high-temperature thermochemical stability and the mechanical property of the ceramic core are remarkably improved, and the problem of shell liquid reaction of a high-temperature alloy casting can be effectively solved; and the strict requirements of directional / single-crystal high-temperature alloy investment casting are met, the quality and the qualified rate of castings are improved, and reliable technical support is provided for production of high-temperature alloy directional / single-crystal castings of aero-engines.

Power electronic equipment comprises a power box body internally provided with a heating device, a heat dissipation box body fixed to one side of the power box body, and a two-phase flow heat dissipation device vertically arranged in the heat dissipation box body. The power box body is provided with a first side plate, the upper portion of the first side plate is provided with an inner concave portion, one side of the heat dissipation box body is provided with an opening, the opening side of the heat dissipation box body is attached to the outer side of the first side plate, the two-phase flow radiator comprises an evaporator, a condenser and a connecting cavity connecting the evaporator and the condenser, and the evaporator is attached to the outer surface of the lower portion of the first side plate. The condenser is located above the evaporator and arranged in the inner concave part, an air inlet is formed in the lower portion of the heat dissipation box body, and an air outlet is formed in the upper portion of the heat dissipation box body. The power electronic equipment is high in heat dissipation efficiency, compact in structure and capable of adapting to various installation angles and installation directions in the range from the vertical direction to the horizontal direction, and the application flexibility and scene adaptability of the power electronic equipment are improved.

A wind tunnel test model structure with a high slenderness ratio belongs to the field of wind tunnel test vehicle design technology. It solves the problems of large vibration amplitude and low data accuracy in existing technologies during testing. Key technical points: The rectifier cap, front cylinder, and front port flange are sequentially bonded together, with the front port flange connected to the front end of the central steel shell; the rear port flange, rear end cylinder, and rear end plate are sequentially bonded together, with the rear port flange connected to the rear end of the central steel shell; a balance sleeve is fitted onto the balance, the central steel shell is fitted onto the balance sleeve, the balance front cone tension plate is connected to the central steel shell, the front end of the balance is connected to the balance front cone tension plate, and the rear end of the balance is connected to the tail end of the balance sleeve. This invention significantly reduces the vibration amplitude of the model structure during testing, avoids damage to the model and equipment caused by resonance, and improves the safety and stability of the entire wind tunnel high angle-of-attack test process; it effectively suppresses the interference of model vibration on measurement results, ensuring accurate and reliable test data acquisition.

This invention discloses a voltage detection and grounding drone and its control method, applied in the field of power system maintenance technology. It includes a drone and a voltage detection and grounding device located beneath the drone. The voltage detection and grounding device consists of an insulating rod, a locking mechanism, and a clamping mechanism. The clamping mechanism is located at one end of the insulating rod, which is fixed to the drone via the locking mechanism. The locking mechanism includes a rear locking mechanism located under the drone's belly, consisting of a vertical slide rail, a rear locking baffle, and a motor mechanism. The motor drives the baffle to move up and down along the slide rail, thereby moving the insulating rod. The clamping mechanism uses a V-shaped fixing plate with a voltage detection and grounding module at the bottom, including a voltage detection sensor, a grounding unit, and a clamping ratchet. The ratchet can rotate laterally to fix the cable within the V-shaped opening, realizing voltage detection and grounding operations. This invention solves the technical problems of low efficiency in existing voltage detection and grounding methods, high safety risks and costs associated with manual operations, and limited applicability of drones for attaching and removing grounding wires.

The invention provides a phthalocyanine sulfonamide derivative dye as well as a preparation method and application thereof, and belongs to the technical field of phthalocyanine series dyes. The structural general formula of the phthalocyanine sulfonamide derivative dye is (PC)-(SO2-N-X) z-(SO3R) y, PC is a phthalocyanine or metal phthalocyanine group, X is hydrogen, C1-C14 alkyl, hydroxyalkyl, aralkyl or aromatic group, R is hydrogen, C1-C4 alkyl or amine salt cation, the value range of z is 1-4, the value range of y is 1-3, and the sum of z and y is less than or equal to 4. According to the invention, the sulfonamide group and the sulfonic acid group are introduced at the same time, so that the prepared derivative dye has excellent organic solvent solubility and water solubility, and the problem of single solubility of the traditional zinc phthalocyanine dye is effectively solved.

The invention discloses a method for preparing organic silicon microspheres from methyltrimethoxysilane high-boiling residues, efficient utilization and continuous production are realized through innovative pretreatment, hydrolysis and polymerization processes, and an efficient, economical and environment-friendly solution is provided for comprehensive utilization of the methyltrimethoxysilane high-boiling residues. The method mainly comprises the following steps: (1) pretreating a high-boiling-point substance, blending the byproduct high-boiling-point substance in the production process of methyltrimethoxysilane with methanol and methyltrimethoxysilane to form a material A, blowing instrument gas, adding a treating agent, reacting under specific temperature and pressure conditions, and removing redundant impurities through a multi-stage filter; (2) mixing the purified material with deionized water according to a certain proportion, completing a hydrolysis reaction under the catalysis of sulfuric acid with the mass fraction of 98%, then preliminarily mixing with prefabricated alkali liquor in a mixer, and feeding into a polymerization kettle to complete a polymerization reaction to obtain a polymerization solution; and (3) filtering, drying and crushing the polymerization liquid to obtain pure white organic silicon microspheres.

The invention discloses a cutter feeding structure for rotary cutting equipment. The cutter feeding structure comprises a transmission assembly, a clamping buffering assembly and a spraying assembly. The transmission assembly is used for carrying out large-amplitude propelling adjustment on the feeding amount of a cutter, the clamping and buffering assembly is used for clamping and fixing the cutter and playing a role in buffering and protecting the impact on the cutter, and the spraying assembly is used for carrying out spraying supply of cutting oil on the cutter and a cutting area according to the amplitude of vibration. Through the synergistic effect of a first spring, a guide rod, a first pushing plate and a second pushing plate which are arranged on the clamping plate, sliding feeding of a cutter can be assisted, the impact on the cutter can be buffered, the impact force is prevented from being directly transmitted to the cutter and other parts of equipment, the cutter is protected against damage, and the service life of the cutter is prolonged. Meanwhile, vibration and abrasion of equipment are reduced, and the overall service life of the equipment is prolonged.

The invention discloses a scheduling method and device for multi-process parallel locomotives for precious metal detection, and aims at the characteristics of complex steps, diversified equipment and the like in a precious metal alloy detection process, considering resource constraints in an actual detection process and taking minimization of maximum completion time as an optimization target. According to the method, a mathematical model for detecting the scheduling problem between the multi-process parallel locomotives through precious metal is constructed, a high-quality scheduling scheme of the mathematical model is obtained by solving the mathematical model so as to accelerate the convergence speed of the algorithm, multiple neighborhood disturbance strategies are adopted to avoid falling into local optimum, and the global search ability of the algorithm is improved. Through verification of actual detection examples, the method effectively improves the scheduling efficiency and the resource utilization rate in precious metal detection.

The invention relates to a Raman spectrum acquisition and transmission circuit and a transmission method. The Raman spectrum acquisition and transmission circuit comprises a communication module, a spectrum acquisition module and a ZYNQ, the communication module is connected with the ZYNQ and is used for receiving the data information, transmitting the data information to the ZYNQ and sending the data information to a remote data center; the ZYNQ is connected with the spectrum acquisition module, is used for processing data information and driving the spectrum acquisition module to acquire, and is also used for processing a digital signal and transmitting the digital signal to a remote data center through the communication module; and the spectrum acquisition module is connected with the ZYNQ, and is used for receiving and acquiring an instruction, converting a spectrum signal into a digital signal and transmitting the digital signal to the ZYNQ. According to the circuit, spectrum data and geographical and time information can be synchronously acquired and sent to a server, so that the data security and traceability are improved; therefore, the method can be used for scenes with extremely high data quality requirements, the problem of communication protocol mismatching is avoided, and the high speed and stability of data transmission are ensured.

The present application relates to an electromagnetic tripping device and a DC switch device. The electromagnetic tripping device triggers a switch action by electromagnetic force, and includes: a main coil and a main iron core; a main push rod, which can move between a main push rod extension position and a main push rod retracted position along the central axis of the main coil, and the main push rod triggers a switch action at the main push rod extension position; a control coil and a control iron core, the control coil can receive current to generate a control magnetic field; the control push rod, which can move between a control push rod extension position and a control push rod retracted position along the central axis of the control coil, wherein the control iron core can push the control push rod from the control push rod retracted position to the control push rod extension position under the action of the electromagnetic force of the control magnetic field, and wherein, the control push rod drives the main push rod from the main push rod retracted position to the main push rod extension position during the process of the control push rod moving from the control push rod retracted position to the control push rod extension position. This scheme improves the operating reliability of the electromagnetic tripping device.

The invention discloses a vehicle-mounted movable DMR-PHE natural gas liquefaction device, raw material gas is circularly cooled through double refrigerants to obtain liquefied petroleum gas LPG and liquefied natural gas LNG products, heat exchange is carried out during primary refrigerant circulation and cryogen circulation, heat exchange is carried out during secondary refrigerant circulation, and heat exchange is carried out during secondary refrigerant circulation. A vehicle-mounted horizontal two-stream plate-fin heat exchanger is adopted for heat exchange among the primary refrigerant, the cryogen and the raw material gas NG; the vehicle-mounted horizontal type two-flow plate-fin heat exchanger is adopted, miniaturization design can be carried out, the strict vehicle-mounted requirement can be met, and maximization of the handling capacity of the cold box in a vehicle-mounted limited space is achieved. The vehicle-mounted horizontal type cold box adopts the two-flow plate-type heat exchanger, miniaturization design can be carried out on the horizontal type cold box, and the handling capacity of the cold box is improved. The mixed refrigerant liquefying process flow based on the vehicle-mounted horizontal cold box is optimized, double-refrigerant liquefying circulation based on the horizontal cold box is constructed, the vehicle-mounted requirement can be met, and the handling capacity of the cold box is maximized in the vehicle-mounted limited space.

The invention discloses a vehicle-mounted movable SMR-PHE natural gas liquefaction device which is used for obtaining liquefied petroleum gas (LPG) and liquefied natural gas (LNG) products by using refrigerant circulating cooling feed gas, and the refrigerant circulating cooling feed gas is subjected to a refrigerant pressurization stage, a refrigerant temperature and pressure reduction stage and a feed gas cooling stage. The refrigerant passes through the first heat exchanger, the second heat exchanger and the second throttle valve during cooling and depressurization, and the feed gas passes through the third heat exchanger and the fourth heat exchanger during cooling; the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are two-flow plate type heat exchangers. The vehicle-mounted horizontal cold box adopts the two-flow plate type heat exchanger, the horizontal cold box can be miniaturized, the mixed refrigerant liquefying process flow based on the vehicle-mounted horizontal cold box is optimized, the single-stage mixed refrigerant liquefying circulation based on the horizontal cold box is constructed, the vehicle-mounted requirement can be met, and the purpose that in the vehicle-mounted limited space, the single-stage mixed refrigerant liquefying circulation can be achieved is achieved. And the handling capacity of the cold box is maximized.

This application discloses a method for preparing high-purity electronic-grade titanium dioxide from ilmenite, belonging to the field of titanium dioxide preparation technology. The method includes steps such as raw material processing, concentrated sulfuric acid acidolysis, sedimentation and filtration, FeSO4 crystallization and separation, preparation of hydrated titanium dioxide, washing and bleaching of hydrated titanium dioxide, acidolysis of hydrated titanium dioxide, secondary hydrolysis, washing and filtration, and calcination. This method effectively removes various impurities such as iron, phosphorus, niobium, and zirconium through acidolysis, secondary hydrolysis, and multiple fine washing operations on the hydrated titanium dioxide intermediate. The resulting titanium dioxide product has a purity of over 99.9%, providing a new route for preparing high-purity electronic-grade titanium dioxide from ilmenite.

This application relates to a method, system, computer device, and storage medium for dual-person sleep monitoring. This application converts the acquired mixed multimodal signals from both individuals into a time-frequency graph matrix, extracts the spatial features of body movement amplitude and posture angle changes from the time-frequency graph matrix, captures the time-series features of respiratory signals, and decouples the respiratory signal sequence, body movement signal sequence, and posture signal sequence for each individual. This overcomes the limitations of traditional Fourier transform and other algorithms, achieving accurate separation of dual-person sleep multimodal signals, solving the problem of signal cross-interference, and through multi-algorithm collaborative processing, achieving high-precision extraction of key parameters such as respiratory rate and body movement during dual-person sleep, reducing the monitoring error rate to within 3%. The method of analyzing each individual's sleep quality and generating individual sleep monitoring reports can adapt to different individual body types, sleep habits, and spatial location changes, improving the algorithm's generalization ability and effectively reducing monitoring blind spots and the risk of misjudgment.