16results about How to "Structural continuity" patented technology

The embodiment of the invention relates to the field of photovoltaic technology, and provides a solar cell and a preparation method thereof, so as to improve the photoelectric conversion efficiency of the solar cell comprising a fragmented cell, greatly reduce the mechanical damage of the fragmented cell, greatly reduce the hidden crack possibility of a photovoltaic module comprising the fragmented cell, and improve the production efficiency of the photovoltaic module. And the product yield is further improved. The preparation method of the solar cell comprises the following steps: providing a whole solar cell; a first laser device is adopted to form positioning grooves in the two ends of the to-be-segmented area respectively; a second laser device is adopted to heat the to-be-segmented area from the positioning groove until the other positioning groove is finished; spraying cooling liquid to the heated to-be-segmented area by adopting a spraying device, so that the whole solar cell is cracked in the to-be-segmented area along the first direction to form at least two segmented cells; the cooling liquid comprises oxidizing substances, and the cross section is a surface hydroxylated silicon surface; and forming a passivation layer on the fracture surface.

The invention discloses a phase change fiber membrane with a composite core-sheath structure and a preparation method and application thereof.The method comprises the steps that polyacrylonitrile is dissolved in N 'N-dimethylformamide and stirred to be completely dissolved, then hydroxylated boron nitride is added, the hydroxylated boron nitride is evenly dispersed through ultrasonic treatment, and a sheath spinning precursor solution is prepared; dissolving polyethylene glycol in N 'N-dimethylformamide, stirring to melt the polyethylene glycol, and taking the polyethylene glycol as a core layer spinning precursor solution; preparing a phase change fiber membrane with a core-sheath structure from the sheath spinning precursor solution and the core spinning precursor solution through a coaxial electrostatic spinning process; and placing the phase change fiber membrane with the core-sheath structure in an ethanol dispersion liquid of hydroxylated boron nitride, carrying out ultrasonic dip-coating, and then carrying out cold pressing treatment to prepare the phase change fiber membrane with the composite core-sheath structure. The obtained composite core-sheath structure phase change fiber membrane has good latent heat property, thermal conductivity and flexibility, and meanwhile, leakage of the phase change material is prevented through the core-sheath structure.

The application discloses a kind of micro-fruit and vegetable fresh-keeping film preparation device and method, the device includes forming cylinder assembly, feeding coating component, dust generation and settlement component, air cooling device and film winding collection component;Forming cylinder assembly includes rotatable self-heating forming cylinder, feeding coating component is used to coat film-forming liquid on the left upper surface of self-heating forming cylinder, dust generation and settlement component is used to settle nano antibacterial catalyst dust on the film surface on self-heating forming cylinder;Air cooling device is used to cold blow setting on the film surface of the right lower part of self-heating forming cylinder, and film winding collection component is used to winding collection of the film formed.The device of the application utilizes the time window period of film not completely solidified to load nano catalytic functional powder, so that the powder is firmly attached to the film surface layer, the contact area of catalytic powder and oxygen is increased, the catalytic efficiency is improved, and the migration risk of catalytic powder is reduced.

This invention pertains to compositions of polymeric compounds, specifically a recycled rubber powder modified asphalt based on a renewable composite activator, its preparation method, and its application. The recycled rubber powder modified asphalt comprises a base asphalt and activated rubber powder in a mass ratio of 1:(0.2~0.3). The activated rubber powder comprises waste tire rubber powder and a composite activator in a mass ratio of 10:(0.8~1.5). The composite activator comprises an organic phase and an inorganic phase in a mass ratio of (1.5~3):1. The organic phase is a chitosan-amino acid derivative, and the inorganic phase is a layered bimetallic hydroxide. Compared with existing technologies, the rubber powder modified asphalt prepared by this invention exhibits good high-temperature storage stability and interfacial structural integrity, demonstrating excellent anti-aging properties and high-temperature rutting resistance during long-term service.

The invention belongs to the technical field of pipeline thermal insulation layers, and discloses a composite pipeline thermal insulation layer and a performance testing method thereof.The composite pipeline thermal insulation layer comprises a first thermal insulation layer and a second thermal insulation layer which are equal in thickness, the inner diameter of the first thermal insulation layer is equal to the outer diameter of a pipeline, and the inner diameter of the second thermal insulation layer is equal to the outer diameter of the first thermal insulation layer; the first thermal insulation layer is made of aerogel or foam glass, and the second thermal insulation layer is made of aerogel or foam glass; the test method comprises the following steps: S1, acquiring parameters; s2, establishing a mathematical model; s3, calculating temperature, displacement and radial stress; and S4, based on the parameters obtained in the step S3, analyzing the thermal insulation performance of the pipeline thermal insulation layer. The pipeline heat preservation layer is good in heat preservation effect, and heat dissipation loss of media in the pipeline is reduced; and a performance analysis test method is established, the influence rule of the interface thermal resistance and different thermal insulation layer materials on the thermal response is analyzed, and a theoretical basis is provided for optimizing the thermal insulation layer and the performance of the composite pipeline.

The utility model provides a novel pump group shell structure, including pump body shell, the pump body shell is rubbed and is welded with lower bearing seat, the upper bearing seat is provided with in the upper bearing seat, the lower bearing seat and the upper bearing seat are outside interference and are equipped with the base, the top of base is connected with the top cover thread. Friction welding is fused as one, fundamentally eliminates the use of screw, friction welding need not open threaded hole, eliminates the potential leak path of threaded hole, thereby improves the sealing performance. The screw hole is the typical stress concentration point, is easy to produce crack under the alternating load, cancels the screw hole, and the structure is more continuous, and the stress distribution is more reasonable, improves the pressure -resisting capacity and the service life.

The invention discloses a composite device and method for preparing a double-metal gradient structure circular pipe through single-step deformation. The composite device comprises a first half die, a second half die, a first forming die, a second forming die, a clamp, a punch, a supporting rod and a taking-out rod, modular integrated design is adopted, and disassembly and combination are convenient. Through cooperative plastic flowing of the forming channel, the outer layer metal material and the inner layer metal material are stably combined in the one-time forming process, the problems of multi-pass machining, mold replacement and the like in a traditional technology are solved, and the production efficiency is remarkably improved. The gradient structure can effectively improve stress distribution between the inner metal layer and the outer metal layer, and the fatigue life and the overall service performance of the pipe are improved. The method is suitable for combination of various metal materials, has wide application prospects, and particularly has important application values in the fields requiring high strength, corrosion resistance, wear resistance and the like.

The invention provides a shock absorber seat and a vehicle. The shock absorber base comprises a shock absorption tower body and a connecting wall. The damping tower body and the connecting walls are integrally cast and formed. The damping tower body comprises a middle boss, a transition part extending outwards from the bottom of the middle boss and a supporting wall located below the transition part. The middle boss comprises a top plate and an annular peripheral wall connected with the top plate. A cavity is formed in the shock absorption tower body, a reinforcing wall further protruding downwards from the annular peripheral wall is arranged in the cavity, and a transition channel is formed by the reinforcing wall and the transition part. The shock absorber base is integrally cast and formed, the structure is simple, meanwhile, stress transmitted to the shock absorption tower body can be effectively dispersed, resonance at a wheel cover is reduced, and the overall torsional rigidity of a vehicle body is improved.

This invention discloses a method for preparing a high-oil-content O / W film-forming formulation, comprising the following steps: Step 1, raw material pretreatment and screening; Step 2, preparation of the oil phase component; Step 3, preparation of the aqueous phase component; Step 4, primary pre-emulsification treatment; Step 5, high-pressure homogenization and fine emulsification; Step 6, compounding of film-forming aids and system conditioning; Step 7, vacuum degassing treatment; Step 8, low-temperature curing and stabilization treatment; Step 9, molding, coating and curing film formation; Step 10, post-treatment and quality inspection. This invention employs nonionic and anionic compound emulsification, combined with multi-stage high-pressure homogenization and interface modifier optimization, to achieve uniform oil droplet size distribution and effectively suppress stratification, demulsification, and flocculation phenomena under high oil-phase ratios. Through a low-temperature segmented curing process, the emulsifier is fully adsorbed and arranged at the oil-water interface, enhancing the strength and toughness of the interfacial film, while simultaneously improving the compatibility between the film-forming agent and the emulsification system.

This invention relates to the field of cable technology and proposes a high-strength cable and its manufacturing method. The high-strength cable includes a conductor, an insulation layer, and an outer sheath arranged sequentially from the inside out. The outer sheath comprises the following raw materials: polyethylene, ethylene-vinyl acetate copolymer, filler, toughening agent, lubricant, antioxidant, ultraviolet absorber, and coupling agent. The toughening agent includes polyolefin elastomer, liquid terpene resin, and rosin triethylene glycol ester. The cable outer sheath provided by this invention exhibits good elongation at break at low temperatures, solving the technical problem of insufficient low-temperature resistance in existing cables.

This invention discloses a device and method for preparing a micro-atmosphere modified atmosphere (MAA) fruit and vegetable preservation film. The device includes a forming cylinder assembly, a feeding and coating assembly, a dust generation and settling assembly, an air-cooling device, and a film hoisting and collecting assembly. The forming cylinder assembly includes a rotatable self-heating forming cylinder. The feeding and coating assembly coats the film-forming liquid onto the upper left surface of the self-heating forming cylinder. The dust generation and settling assembly settles nano-antibacterial catalyst dust onto the film surface on the self-heating forming cylinder. The air-cooling device cools and shapes the film surface on the lower right side of the self-heating forming cylinder. The film hoisting and collecting assembly collects the formed film. This invention utilizes the time window before the film completely solidifies to load nano-catalytic functional powders, allowing the powders to adhere firmly to the film surface, increasing the contact area between the catalytic powders and oxygen, improving catalytic efficiency, and reducing the risk of catalytic powder migration.

The utility model discloses an assembly type ecological frame unit and a protection structure, and belongs to the field of slope bank protection. The protection structure is composed of a foundation and a plurality of ecological frame units. The foundation comprises a plurality of steps which are formed on a slope bank and are connected and distributed; the ecological frame units are located on the steps and the ecological frame units on the next layer; each ecological frame unit comprises a supporting part with a containing space formed inside, two side baffles located at one end of the supporting part and located on the two sides of the supporting part, and a main baffle arranged at one end of the side baffles and one end of the supporting part. A plurality of ecological frame units are sequentially mounted on the steps and the next layer of ecological frame unit according to design requirements to form a hierarchical progressive protection structure, the main baffles and the side baffles between the ecological frame units are connected with each other to ensure that the whole structure is continuous and stable, and the accommodating spaces communicated with each other are arranged in the ecological frame units. Favorable conditions are created for plant growth, and the ecological benefits of slope protection engineering are effectively improved.

The invention relates to the technical field of aircraft design, and discloses an unmanned aerial vehicle nacelle composite cap-shaped stringer integral panel and a preparation method thereof, and the unmanned aerial vehicle nacelle composite cap-shaped stringer integral panel is located at the rear section of an unmanned aerial vehicle nacelle and is of an integral panel structure form. The wallboards are made of carbon fiber fabrics, the stringers are made of rigid foam cores, and the wallboards are divided into inner skins and outer skins at the stringers; the method comprises the following steps: paving an outer skin on a mold, and paving an inner skin by taking a stringer as a mold tire after the stringer is fixed on the outer skin; after the inner skin is paved, the periphery of the stringer is connected with the skin to form a closed section; and crack stopping nails are mounted near the ends of the stringers for structural reinforcement. The integral composite wallboard is continuous in structure, free of connection hard points and excellent in load transfer performance and fatigue resistance.

The invention belongs to the technical field of semiconductors, and discloses a contour backlight switching device and detection equipment. The contour backlight switching device comprises a base plate, blades and a driving assembly, a plurality of positioning columns are arranged on the base plate and evenly distributed in the circumferential direction of the base plate, and the scattering rate of the base plate is larger than that of a to-be-detected piece; the blades are arranged on the base plate, the multiple blades and the multiple positioning columns are arranged in a one-to-one correspondence mode, positioning holes matched with the positioning columns are formed in the blades, and the reflectivity of the blades is larger than that of a piece to be detected; the driving assembly comprises a rotating disc and a driving part capable of driving the rotating disc to rotate, the rotating disc is located above the blades, the blades are in sliding connection with the rotating disc, and when the driving part drives the rotating disc to rotate forwards or reversely, the blades slide along the rotating disc and rotate forwards or reversely around the corresponding positioning columns, so that the blades rotate out or retract. The contour backlight switching device is compact in structure, and continuity and integrity of contour imaging during detection are improved.

The application relates to the field of space intelligence, and provides a cross-scene space intelligent semantic topology generation method and system. In the process of constructing a cross-scene space semantic topology, a transition region modeling mechanism with a transition node as a core is introduced, regions where mutations in geometric structures, semantic attributes and topological scales simultaneously occur between different space scenes are identified, expanded and processed as independent objects, and the problem of semantic rupture, topological distortion and space incoherence caused by simple splicing at the scene boundary level in the prior art is avoided. The transition node is structurally expanded based on a topological connection relationship, a transition region reflecting the connectivity of different space scenes is constructed, and semantic transition consistency constraints and topological structure deformation compensation are implemented in the transition region. In addition, the application combines a multi-scale topological self-adaptive adjustment mechanism, so that the cross-scene semantic topology can dynamically adjust node granularity and topological levels under different space scales.

The invention relates to the technical field of municipal engineering, and discloses a municipal road asphalt pavement surface layer seamless splicing construction method, which comprises the following steps: carrying out cutting operation along the longitudinal edge of a firstly paved pavement by using a milling device to form a longitudinal splicing interface, and carrying out texture roughening treatment on the longitudinal splicing interface to obtain a rough splicing interface; a new asphalt mixture is laid on the outer side of the rough splicing interface, and vibration rolling forming operation is conducted on the new asphalt mixture, so that the new asphalt mixture is compactly embedded into the deep anchoring structure, and an outer side new asphalt mixture layer is obtained; the new asphalt mixture layer on the outer side and the firstly-paved road surface are subjected to synergistic curing, and an integral type road surface structure is obtained; and a sealing material is injected into the splicing position of the corresponding top of the integral pavement structure, and a target spliced pavement is obtained after the sealing material penetrating and filling surface gaps of the splicing position is solidified. The service life of the municipal road can be prolonged.