39results about How to "Simple system" patented technology

The invention relates to the technical field of TPU films, in particular to a flame-retardant TPU film and a preparation method thereof, and the flame-retardant TPU film comprises the following raw materials in parts by weight: 45-50 parts of TPU, 7-11 parts of a modified additive, 6-9 parts of a chemical resistant agent, 5-8 parts of a flame retardant, 3-5 parts of a flexibilizer, 2-3 parts of an antioxidant, 2-3 parts of a silane coupling agent and 1-3 parts of a lubricant. According to the TPU thin film, TPU is adopted as a matrix, the flame retardant, the flexibilizer, the antioxidant, the silane coupling agent and the lubricant are added to serve as functional auxiliaries, and meanwhile the modified additive and the chemical resistance agent are added to serve as blending raw materials, so that the flame retardance of a product is optimized, the coordinative improvement of water vapor blocking and tearing is achieved, and the ultraviolet-resistant and corrosion-resistant stability effects of the product are remarkable.

The invention discloses a stroke triggering limiting protection device based on rotation of more than 360 degrees. The stroke triggering limiting protection device comprises a rotation driving assembly structure; the transposition guide structure is provided with a spiral guide groove; the stroke triggering structure comprises a mounting base body and a self-adaptive sliding seat which slides on the mounting base body; the mounting base body is in transmission connection with the rotary driving assembly structure, the self-adaptive sliding seat is arranged in the spiral guide groove, and when the mounting base body does circular motion, the self-adaptive sliding seat performs self-adaptive displacement along the spiral guide groove and does linear motion based on the mounting base body; a travel switch assembly structure; two point positions of linear motion of the self-adaptive sliding seat and a travel switch assembly structure form a signal triggering effect, rotary motion of the rotary driving assembly is converted into linear triggering motion of the self-adaptive sliding seat based on the travel switches, and in one-time one-way rotary motion, each travel switch is only triggered once, so that one-time one-way rotary motion is achieved. And control logic limitation and complexity caused by multiple times of triggering of the travel switch mechanism are solved.

The present invention belongs to the field of mineral flotation, and specifically relates to a flotation preactivator for antimony oxide ore, comprising an electrolyte, a tartaric acid source and a sulfiding agent; the electrolyte is a water-soluble inorganic salt; the tartaric acid source is tartaric acid and its water-soluble salt; the sulfiding agent is a water-soluble organic sulfide containing at least one group of HS-, -S-. The present invention also includes a method for activating antimony oxide ore and flotation using the activator. In the present invention, the activator can effectively improve the flotation performance of the antimony oxide ore.

The invention relates to the field of organic chemistry and medicinal chemistry, in particular to an indeno-aza compound I as well as a preparation method and medical application thereof. The method comprises the following steps: adding an amine compound into an indeno-oxa-heptacyclic compound serving as a raw material under solvent-free and additive-free conditions, directly adding stoichiometric thionyl chloride and a solvent acetonitrile into an intermediate product obtained after the reaction without separation and pretreatment to continue the reaction, adding alkali again without separation and pretreatment after the reaction is completed, and separating and purifying to obtain the product. And controlling the reaction temperature to finally prepare the indeno-aza compound. The invention reports a compound with a novel structure, and develops a one-pot continuous operation synthesis method of the compound. The synthesis operation of the method conforms to the concept of green chemistry, and the obvious advantages of chemical synthesis means are embodied. Meanwhile, the compound has a certain inhibition effect on human esophageal cancer cells and human bladder cancer cells.

The present invention relates to an integrated buoyancy and attitude adjustment system for a manned submersible, comprising a manned submersible, a ballast tank unit, a main pumping assembly, an external circulation switch valve and a first switch valve, wherein one end of the external circulation switch valve is connected to the ballast tank unit in a one-to-one correspondence, and the other end is connected to the main pumping assembly, the other end of the main pumping assembly is connected to the first switch valve, and the other end of the first switch valve is communicated with an open sea environment; an internal circulation switch valve, wherein one end of the internal circulation switch valve is connected to the ballast tank unit in a one-to-one correspondence, and the other end is connected to a pipeline between the main pumping assembly and the first switch valve; the external circulation switch valve cooperates with the main pumping assembly and the first switch valve to inject or discharge seawater into or out of the ballast tank unit; the internal circulation switch valve cooperates with the main pumping assembly, the first switch valve and the external circulation switch valve to complete water injection and drainage between each ballast tank unit; the present invention overcomes the problems of complex design, high cost, high energy consumption, short endurance and low reliability of the buoyancy and attitude adjustment system.

This invention relates to a biomass char composite electrocatalyst supported on nickel-cobalt sulfides, its preparation, and its application. The preparation method includes: subjecting biomass material to high-temperature carbonization to obtain a biomass char substrate with a porous structure; immersing the biomass char substrate in a solution containing nickel and cobalt salts, and obtaining biomass char supported on nickel-cobalt oxides through a hydrothermal reaction; placing the biomass char supported on nickel-cobalt oxides in a solution containing a sulfur source, and obtaining the biomass char composite electrocatalyst supported on nickel-cobalt sulfides through a hydrothermal reaction. The biomass char composite electrocatalyst supported on nickel-cobalt sulfides of this invention can be applied in biomass electrocatalytic oxidation reactions, achieving selective control of the biomass oxidation reaction and oxygen evolution reaction through an external magnetic field, thereby improving the efficiency of high-value conversion of biomass. The magnetic field control method of this invention has advantages such as non-contact control, simple system, and strong applicability, and has good application prospects.

The invention belongs to the technical field of polyurethane materials, particularly relates to a two-component polyurethane composition and a washable anti-yellowing polyurethane foam material prepared from the two-component polyurethane composition, and further discloses a preparation method of the two-component polyurethane composition. The bi-component polyurethane composition comprises an independent component A and an independent component B. The component A comprises polyether polyol, a random polymer of hexafluorobutyl methacrylate (HFBMA) and 2-hydroxyethyl methacrylate (HEMA), a cross-linking agent, a foaming agent, a foam stabilizer and a catalyst. And the component B comprises isocyanate. According to the double-component polyurethane composition disclosed by the invention, on the basis of a traditional polyurethane synthesis system, a polymer obtained by copolymerizing hexafluorobutyl methacrylate and 2-hydroxyethyl methacrylate is used as a modifier; the polyurethane material prepared from the polyurethane composition has the advantages of washable yellowing resistance, excellent tensile strength, tear strength and elongation at break, and certain weatherability.

The invention discloses an internal heating type rotary carbonization furnace for forward and reverse flow heating and a process control method, and relates to a carbonization device. Comprising a feeder, a clockwise and anticlockwise circulation kiln, a high-temperature fuel gas channel, a discharging cabinet, a cooling charcoal discharging device, a low-temperature fuel gas channel, a medium-temperature fuel gas channel, a two-section type combustion furnace, a high-temperature flue and a circulating type regulation and control pipeline system. Raw material carbonization comprises two stages, one stage is a countercurrent carbonization stage which is mainly completed in a countercurrent carbonization furnace stage, raw materials face downwards, flue gas faces upwards, and most of water in the raw materials is gasified in the stage. 2, a down-flow carbonization stage is mainly completed in a down-flow carbonization furnace stage, the raw materials and flue gas move downwards, and most organic matters in the raw materials are cracked in the stage; a process control method comprises the steps of ignition, heating, feeding carbonization, gas ring formation, two-stage combustion, energy self-supply, carbonization temperature regulation and control and gas flow regulation and control. Compared with a conventional carbonization system, an additional drying link is omitted, equipment is simplified, and the stability of the carbonization effect is ensured.

The invention discloses a long single-stranded DNA (deoxyribonucleic acid) preparation method based on hybridization chain reaction, which comprises the following steps: carrying out hybridization chain reaction on an initiation chain I0, a hairpin structure monomer H1 and a hairpin structure monomer H2 to obtain a long double-stranded DNA product; and sequentially connecting 5 ends and 3 ends of adjacent H1 chains in the obtained long double-chain DNA product by adopting T4 ligase, annealing at 95 DEG C, and separating an H1 series long single chain, an H2 short chain and an initiation chain I0, so that the H1 series long single chain is the long single-chain DNA. The invention develops a new method for preparing the long single-stranded DNA, rapid separation of the long single-stranded DNA and the connecting fragment can be realized in the reaction liquid only through simple annealing at 95 DEG C without enzyme digestion or other additional treatment steps, the generated long single-stranded DNA is a circulating sequence, the sequence accuracy is high, and the total length can reach 2240 nt.

The application discloses a method based on electronic spin control benzyl halide electrochemical reduction reaction and belongs to the field of electrochemistry. The method comprises the following steps: (1) configuring an electrolyte with benzyl halide as a substrate, tetrabutylammonium perchlorate as a supporting electrolyte and acetonitrile as a solvent; (2) adopting a three-electrode system in the experiment, wherein a working electrode is a nickel electrode, a counter electrode is a zinc electrode and a reference electrode is a ferrocene electrode; under the conditions of room temperature and a nitrogen atmosphere, the three electrodes are inserted into the electrolyte, a magnetic field is applied to the system, constant-voltage electrolysis is carried out, passed electric quantity is recorded, and electrolysis is stopped when the system passes the specified electric quantity. The application uses an applied magnetic field and a nickel electrode to regulate the selectivity of the reaction, does not need to modify the electrode or add a catalyst, has the advantages of green environmental protection, a simple system and convenient operation and the like, and realizes a breakthrough of electronic spin in the regulation of organic electrochemical reactions.

The invention relates to the technical field of automatic control, in particular to a dropping liquid monitoring device which comprises a shell, a liquid level sensor, a liquid level sensor and a liquid level sensor. The fixing piece is used for fixing the measuring pipe on the shell; the sensing module is fixed on the shell, the sensing module comprises a PMUT device, and the PMUT device forms vibration information through vibration of the side wall of the measuring tube; the control module is arranged in the accommodating cavity, the control module is in signal connection with the PMUT device, and the control module outputs liquid dropping result information according to the vibration information; the power supply module is used for supplying power to the control module and the PMUT device; the display module is in signal connection with the control module, the display module outputs display information according to the result information, and according to the dropping liquid monitoring device, accurate monitoring is guaranteed, meanwhile, the system is simplified, and low maintenance is achieved.

The invention belongs to the field of semiconductor materials, and discloses gallium oxide and a synthesis method thereof. The synthesis method comprises the following steps: introducing ammonia water into a gallium nitrate solution, and continuously stirring to obtain a white turbid liquid; aging the white turbid liquid, filtering and washing to obtain an intermediate product; and calcining the intermediate product to obtain solid particles which are gallium oxide. According to the synthesis method, gallium nitrate and ammonia water are used as core raw materials, additional additives and complex precursors are not needed, the impurity introduction risk can be greatly reduced, and the high purity of the product can be guaranteed by combining washing and calcining procedures; meanwhile, the process steps are simple, the operation conditions are mild and controllable, expensive special equipment is not needed, the production cost is low, the method is suitable for large-scale production, and a gallium oxide product with good dispersity and high crystallinity can be obtained after a precursor prepared through a precipitation method is calcined and crushed.

Non-human animals, and methods and compositions for making and using the same, are provided, wherein said non-human animals comprise a humanization of an endogenous cluster of differentiation (CD) gene, in particular a humanization of a CD47 gene. Said non-human animals may be described, in some embodiments, as having a genetic modification to an endogenous CD47 gene so that said non-human animals express a CD47 polypeptide that includes a human portion and a non-human portion (e.g., a murine portion).

The present invention belongs to the technical field of compressors, and relates to a centralized unloading device for multiple pump heads of an air compressor unit, which is characterized in that multiple pump heads of an air compressor unit share an unloading device, and the unloading device is arranged between the pump head and the gas tank, and includes an unloading valve and a transition chamber, and the transition chamber is connected to the gas tank of the unit, and the unloading valve controls the on-off state of the transition chamber and the outside atmosphere. Since multiple pump heads of an air compressor unit share an unloading device, the present invention can achieve the following beneficial goals: 1) The number of unloading devices is greatly reduced, so the manufacturing cost of the entire unit is reduced; 2) The number of unloading devices is greatly reduced, so the system of the entire unit is simplified, thereby improving its overall reliability; 3) The number of unloading devices is greatly reduced, so the exhaust system layout of the entire unit becomes more compact.

The invention discloses an improvement control method and system for knocking sound of a single planet row type hybrid gearbox. The method comprises the steps that attaching torque control is activated; according to the running gear of the vehicle, a flywheel clinging control target generator torque control push rod is adopted to be clinging to a flywheel groove, and if the flywheel clinging control target generator torque value is lower than the original target generator driving torque, the original target generator driving torque is chased at the continuously-increased slope; when the driving torque of the original target generator switches the positive direction and the negative direction, direction switching is completed according to the torque slope value of the transition target generator, and then a push rod is tightly attached to a flywheel groove according to the switched direction; linear torque filtering and target generator driving torque filtering are added, and the slope of the target generator driving torque is calibrated. According to the invention, the knocking sound generated by the push rod and the groove in the flywheel locking mechanism and the gear knocking sound generated in the multi-stage gear clearance in the ECVT dual-motor pure electric driving mode of the gearbox can be improved.

A controller for determining an injection strategy of a fuel injector in a hydrogen fuel injection system in an engine, the controller comprising: an input configured to receive an engine operating parameter and a pressure signal associated with a pressure of hydrogen fuel available for injection from the injector in the fuel injection system; a processor arranged to determine an injection strategy for the injector based on the received pressure signal and engine control parameters, the determined injection strategy comprising one or more injector control signals to control operation of the fuel injector; and an output arranged to output the one or more control signals to the fuel injector.

A hot forging steel piston skirt trimming-punching-finishing three-in-one device and processing method for inhibiting hot deformation belong to the technical field of mechanical processing, and are directed to trimming punching production process control of hot forging steel piston skirt forgings with flash or needing punching or both. The four process controls of holding, trimming, punching and finishing of the hot forging steel piston skirt are realized through mutual cooperation of three high-temperature-resistant die springs, and the precision of the piston skirt is greatly improved. The trimming device is simple in structure and safe, can be classified according to different specifications of different cylinder diameter piston skirts, and can meet the high-precision trimming requirements of all hot forging steel piston skirts. The present application innovatively proposes the technical scheme of "three sets of customized rectangular springs cooperative control + synchronous composite process", and for the first time realizes "one clamping and three processes completed simultaneously" of the hot forging steel piston skirt, solves the hot deformation and efficiency bottleneck from the aspects of process principle and structure design, and has remarkable creativity and practicality.

The utility model discloses an automatic water flushing device for a photovoltaic panel, which comprises the photovoltaic panel mounted on a bracket; the flushing device comprises a first flushing assembly and a second flushing assembly which are symmetrically arranged on the upper edge and the lower edge of the photovoltaic panel according to the installation angle of the photovoltaic panel, each flushing assembly comprises a flushing pipeline arranged along the upper edge of the photovoltaic panel, a plurality of water spraying openings are evenly formed in the flushing pipeline, and angle-adjustable nozzles are arranged in the water spraying openings and face the photovoltaic panel. A connector at one end of the flushing pipeline is connected with a water inlet hose; a control valve is arranged on the water inlet hose; and the PLC control system is used for controlling opening or closing of the first control valve and the second control valve according to a preset rule. The system is simple, the device is simple, the cost is low, and the system is suitable for a distributed photovoltaic power station.

The invention discloses an ion migration tube composed of PCB boards, which is composed of 6 PCB boards and 3 grids. All functions of the migration tube are integrated in the PCB board, and the integration is extremely high. Except for the grid, all components constituting the ion migration tube are PCB boards, which reduces the production cost. By utilizing electronic high-precision manufacturing technology, the design efficiency and processing accuracy are improved, and it is convenient for laboratory production or batch production. The ion migration tube is small in size and is particularly suitable for use in wearable or portable instruments.

This invention discloses an air separation system and method for co-producing hydrogen, belonging to the field of air separation and hydrogen production technology. It includes four oxygen-permeable membrane reactors and two condensers. The oxygen-producing outlet of the fourth oxygen-permeable membrane reactor (R4) is connected to the second condenser (C2), which has a condensate drain outlet and an oxygen outlet. The nitrogen-producing inlet of the third oxygen-permeable membrane reactor (R3) is connected to the air-producing outlet of the fourth oxygen-permeable membrane reactor (R4). The fuel-producing inlet of the second oxygen-permeable membrane reactor (R2) is connected to the fuel-producing outlet of the third oxygen-permeable membrane reactor (R3). The fuel-producing inlet of the first oxygen-permeable membrane reactor (R1) is connected to both the fuel-producing outlet and the hydrogen-producing outlet of the second oxygen-permeable membrane reactor (R2), and the hydrogen-producing outlet of the first oxygen-permeable membrane reactor (R1) is connected to the first condenser (C1), which has a condensate drain outlet and a hydrogen outlet. This invention simultaneously produces hydrogen, oxygen, and nitrogen through a reasonable process arrangement. The method is simple, efficient, and highly economical and practical.

The invention provides a power transmission line ice melting method based on adjustable inductance. The power transmission line ice melting method comprises the steps that the ice coating amount of a power transmission line is detected; judging whether the icing amount of the power transmission line reaches a set value or not, if yes, controlling a circuit breaker of a distribution network where the power transmission line is located to be disconnected, and controlling the power transmission line to exit overcurrent protection and bus differential protection; the inductance value of the adjustable inductor is adjusted to the maximum value, and the electric control switch I and the electric control switch II are controlled to be closed; controlling the adjustable inductance value to be reduced until the ice melting current flowing through the power transmission line reaches a set value; after ice melting is completed, the inductance value of the adjustable inductor is controlled to be increased to the maximum value, and the electric control switch I and the electric control switch II are switched off; and controlling over-current protection, bus differential protection and distribution network circuit breaker operation of the power transmission line.

The invention provides a power transmission line ice melting method based on an adjustable inductor and an adjustable capacitor. The power transmission line ice melting method comprises the steps that the ice coating amount of a power transmission line is detected; judging whether the icing amount of the power transmission line reaches a set value or not, if yes, controlling a circuit breaker of a distribution network where the power transmission line is located to be disconnected, and controlling the power transmission line to exit overcurrent protection and bus differential protection; the inductance value of the adjustable inductor is adjusted to the maximum value, the capacitance value of the adjustable capacitor is adjusted to the minimum value, and the electric control switch I, the electric control switch II and the electric control switch III are controlled to be closed; controlling the adjustable inductance value to be reduced and controlling the capacitance value of the adjustable capacitor to be increased until the ice melting current flowing through the power transmission line reaches a set value; after ice melting is completed, the inductance value of the adjustable inductor is controlled to be increased to the maximum value, the capacitance value of the adjustable capacitor is controlled to be reduced to the minimum value, and the electric control switch I, the electric control switch II and the electric control switch III are switched off; and controlling over-current protection, bus differential protection and distribution network circuit breaker operation of the power transmission line.

The invention relates to a normal-temperature reverse flotation desilicication method for hematite, in particular to a flotation separation method for hematite and quartz, and belongs to the technical field of mineral flotation separation in the field of mineral processing engineering. A hematite normal-temperature reverse flotation desilicication method comprises the following steps: mixing an ore sample to be treated with water according to a mass ratio, and carrying out size mixing and stirring until the pH value is 10-12; adding an activating agent calcium chloride, and stirring; then adding an inhibitor soluble starch, and stirring; and finally, a collecting agent N-sodium lauroyl sarcosinate is added, flotation is conducted after stirring, and hematite concentrate is obtained. The method disclosed by the invention is simple in process flow, simple in reagent system (without adding a foaming agent), convenient to operate and capable of realizing normal-temperature flotation, and has a relatively good industrial feasibility prospect.

The invention discloses a copper-molybdenum bulk concentrate copper-molybdenum flotation separation method which comprises the steps of pretreatment, roughing, concentration and scavenging and specifically comprises the steps that to-be-treated copper-molybdenum bulk concentrate is subjected to size mixing till the concentration is 20-35%, and a material a is obtained; sodium sulfide is added into the material a and stirred for 5-10 min, dehydration and reagent removal are conducted in a thickening mode, thick underflow b and return water are obtained, and the return water is circulated; the ore pulp concentration of the dense underflow b is adjusted to be 15-30%, a copper inhibiting and molybdenum floating combined agent and kerosene are sequentially added for flotation, and molybdenum rough concentrate c and copper rough concentrate d are obtained; the molybdenum rough concentrate c is subjected to four-stage concentration to obtain molybdenum concentrate, and tailings subjected to concentration in the period return to the previous step for circulation; and adding a copper inhibiting and molybdenum floating combination agent and kerosene into the copper rough concentrate for secondary scavenging to obtain copper concentrate, and returning scavenged tailings to the previous step for circulation in the period.

The invention relates to the technical field of ship lubricating oil dynamic calculation, in particular to a ship engine air cylinder lubricating oil flow dynamic control system and a ship engine air cylinder lubricating oil flow dynamic calculation method.The system comprises a data acquisition module, a calculation processing module and a flow control module, the calculation processing module is connected with the flow control module, the data acquisition module is a module for acquiring operation parameters of an engine, the acquired operation parameters of the engine are transmitted to the calculation processing module, and the calculation processing module dynamically calculates and processes data to obtain the flow of required lubricating oil. The lubricating oil flow control system has the advantages that the system is simple, the method is simple and convenient, the use amount of the lubricating oil in the air cylinder is accurately controlled, the lubricating efficiency is improved, the operation cost is reduced, the environmental pollution is reduced, and the like.

The present invention discloses a method and system for suppressing load interference of a binary distillation tower. The method for suppressing load interference establishes a mathematical model of a binary distillation tower by identifying the transfer function of the control channel between each input and output; effectively estimates the external load interference based on the obtained mathematical model of the distillation tower and the input and output data, and then designs a performance filter to improve the dynamic performance of interference suppression; finally, the adjustment signal output by the interference estimation signal after passing through the performance filter is used as the system adjustment control input. The present invention is simple and easy to implement, and can effectively control a binary distillation tower with load interference, reduce the impact of interference on the system, and thus improve the quality of products extracted from the top and bottom of the tower.

Non-human animals, and methods and compositions for making and using the same, are provided, wherein said non-human animals comprise a humanization of an endogenous cluster of differentiation (CD) gene, in particular a humanization of a CD47 gene. Said non-human animals may be described, in some embodiments, as having a genetic modification to an endogenous CD47 gene so that said non-human animals express a CD47 polypeptide that includes a human portion and a non-human portion (e.g., a murine portion).

The present invention provides a primer and typing probe combination for detecting human papillomavirus and its application. The primer and typing probe combination for detecting human papillomavirus comprises a universal primer pair and a typing probe for amplifying the late region L1 region of the human papillomavirus genome; the universal primer pair comprises an upstream primer group and a downstream primer group; the upstream primer group comprises an upstream primer 1, an upstream primer 2 and an upstream primer 3; the downstream primer group comprises a downstream primer 1, a downstream primer 2 and a downstream primer 3. The primer and typing probe combination for detecting human papillomavirus can detect and distinguish 28 HPV subtypes, which is superior to current domestic similar products, has a wider coverage and is more representative.

A sludge drying system with steam fluidization heating comprises a bubbling bed sludge dryer, a cyclone purifier and a steam regenerator connected in sequence, wherein the bubbling bed sludge dryer is divided into at least two spaces connected at the top from the inlet to the outlet, and an air distribution chamber is arranged below each space, and the slag discharge pipe of the cyclone purifier is inserted below the bed material layer of the first space, and the steam regenerator comprises a main working room, a drain tank and an auxiliary water tank, wherein the drain tank and the auxiliary water tank are located on both sides of the main working room, and a plurality of heat exchange surfaces are arranged from top to bottom in the main working room, and the main working room is connected to each air distribution chamber through a pipeline. The present invention effectively solves the problems of flow, heating and drying of garbage, sludge and other materials with high humidity, strong viscosity and difficult flow, and has the advantages of simple system, high heat exchange coefficient, high material drying degree and low equipment energy consumption, thus creating favorable conditions for further resource utilization of garbage and sludge.

The application discloses a kind of RPA-Cas12a one-pot rapid detection system and application thereof, the system includes RPA premix and CRISPR-Cas12a premix;CRISPR-Cas12a premix includes ssDNA, Cas12a and crRNA;crRNA is the specific guide RNA sequence based on suboptimal PAM sequence design can guide Cas12a target recognition AHPND RPA product.This application designs specific crRNA, reduces the cleavage efficiency of Cas12a, makes RPA amplification process and CRISPR-Cas12a specific cleavage process simultaneously in a tube reaction, avoids the potential pollution risk of RPA amplification product transfer in two-step method and cumbersome steps, high sensitivity, good stability, provides high sensitivity, high accuracy, good stability, simple and fast AHPND on-site detection method for aquaculture industry.