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48results about How to "Optimize energy distribution" patented technology

Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof

The invention relates to a process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and a system thereof. The method comprises the following steps: (1) carrying out grinding on the raw material lignite; (2) burning one part of coal blocks/powder to produce high-temperature flue gas serving as a heat source and carrying out air separation and dring on the other part of coal blocks/powder requiring to be subjected to quality improvement; (3) in the process of air separation, adopting the high-temperature flue gas from the step (2), carrying out drying, separation and dust removal on the qualified coal blocks/powder conforming to the standard grain diameter after air separation, collecting the qualified coal blocks/powder, sending the qualified coal blocks/powder to the forming process, making the unqualified coal blocks/powder drop in a grinding ventilating device to carry out grinding and drying, then continuously completing deep drying by air separation and repeating the steps, wherein the oxygen content in the flue gas is less than 8 percent; and (4) sending one path of waste gas subjected to air separation and drying to the washing process and returning the other path of waste gas serving as a return tail gas part to the step (2) so as to prepare the high-temperature flue gas and carry out air separation. The process has the advantages of safety, energy saving, environment protection, high efficiency, stability and the like.
Owner:SHANDONG TIANLI DRYING TECH & EQUIP

Tubular/cylindrical mud residue internal reflux mud-water high-efficiency separation device

The invention relates to a small high-efficiency mud-water separation device used for supplying water to villages and small towns. The device comprises a mechanical flocculation area and a hydraulic flocculation area, a sedimentation area, an active mud residue concentration area, an active mud residue internal reflux tube/cylinder, an impeller lifting device, a water inlet and outlet system, a mud discharge system and the like. The main body of the device mainly comprises three layers of concentric cylinders; an inner cylinder is the mechanical flocculation area, the middle is provided with the impeller lifting device, and active mud residue at the bottom of a concentration chamber is lifted to the mechanical flocculation area by the internal reflux tube/cylinder arranged in the center of the bottom; the hydraulic flocculation area is formed between the inner cylinder and a middle cylinder, and is provided with a pore plate; the sedimentation area is formed between the middle cylinder and an outer cylinder, and is provided with a single-blade single-curve rotary sloping plate; and the bottom of the equipment is provided with a mud residue concentration chamber. The device has theadvantages of compact structure, high space utilization rate, small occupied area, mechanical flocculation area, easily controlled reflux quantity, low energy consumption, good effluent quality and the like, and has great promotion value.
Owner:CHONGQING UNIV

Aluminum alloy pulse ultrasound and electric arc composite welding device and method

The invention discloses an aluminum alloy pulse ultrasound and electric arc composite welding device and method. Based on ultrasound and electric arc composite welding, the device further comprises a current and voltage detection circuit, a DSP, a single chip microcomputer, a triode switch circuit and a drive circuit. The current and voltage detection circuit is connected with the output end of a matching circuit of an ultrasound generation system. The current and voltage detection circuit is connected with the DSP. The DSP is connected with the drive circuit. The single chip microcomputer is connected with the triode switch circuit. The triode switch circuit is connected with the drive circuit. The drive circuit is connected with a DC / AC full-bridge inversion circuit of the ultrasound generation system. According to the welding method, ultrasound is applied to conduct pulsing processing, and aluminum alloy pulse ultrasound and electric arc composite welding is achieved. The aluminum alloy pulse ultrasound and electric arc composite welding device and method have the advantages of ordinary ultrasound and electric arc composite welding, the electric arc stiffness can be improved, weld penetration is increased, grains are refined, the size of molten drops is reduced, transition frequency is increased, splashing is reduced, high-quality welding under a common welding environment is achieved, aluminum alloy welding pores, welding cracks and the like can be reduced effectively, the microstructure of weld metal is optimized, and the mechanical property of welding connectors is improved remarkably.
Owner:HARBIN INST OF TECH

Controllable liquid flow-vibration coupling auxiliary laser milling and polishing machining method and system

The invention discloses a controllable liquid flow-vibration coupling auxiliary laser milling and polishing machining method and system. The machining system comprises a laser machining unit used for conducting laser machining on a workpiece; a liquid flow auxiliary unit used for providing liquid flow to be in contact with the workpiece; a vibration auxiliary unit used for applying vibration to the workpiece; and a control unit used for regulating and controlling the working states of the laser machining unit, the liquid flow auxiliary unit and the vibration auxiliary unit so as to realize controllable coupling of laser machining, vibration and liquid flow. By controllable coupling of laser, vibration, liquid flow and the like, superiority of each process/energy field can be exerted, coupling complementation is realized, macro-micro-scale energy distribution characteristics of a machining area are effectively regulated and controlled, heat influence is reduced, micro-cracks are avoided, laser milling and polishing chip removal characteristics and machining quality are remarkably improved, workpiece quality is greatly improved, and the material removal efficiency is effectively improved. The machining system of the invention is particularly suitable for precision machining of metal materials, hard and brittle materials and the like.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Independent micro-grid dynamic optimization scheduling method

The invention discloses an independent micro-grid dynamic optimization scheduling method, which comprises the following steps of: 1, establishing a long-period energy matching evaluation and optimization model for an independent micro-grid system, and formulating a diesel oil consumption plan, an energy storage system energy storage plan and a load transfer plan within expectation; comprising the following steps: establishing objective functions about reliable power supply probability, diesel consumption and load transfer amount; setting constraint conditions of an energy storage system, diesel oil consumption and load energy transfer; 2, establishing a day-ahead stochastic optimization model based on scene analysis, and making a micro-grid hourly scheduling plan in the next day; the photovoltaic and load uncertainty is processed through a multi-scene technology, and meanwhile, the scheduling risk cost caused by the photovoltaic and load uncertainty is measured by using the conditional value-at-risk CVaR; the load transfer scheme and the standby electricity demand in the long-period energy matching evaluation and optimization stage are considered; an objective function in the day-ahead stochastic optimization model is to minimize comprehensive scheduling cost, and the comprehensive scheduling cost comprises scheduling cost and risk cost; the constraint conditions comprise a power balance constraint, an energy storage operation constraint, a diesel generator operation constraint, a load transfer constraint and a standby electricity demand constraint.
Owner:TIANJIN UNIV

High-energy beam peak moving processing path planning method

The invention discloses a high-energy beam peak moving processing path planning method and belongs to the technical field of high-energy beam manufacturing. According to the high-energy beam peak moving processing path planning method, when filling scanning paths of various to-be-processed layers are generated, between the adjacent various layers, positions, highest in power, in the high-energy beam scanning paths mutually deviate by set amounts, and therefore energy distribution in the processing process is improved, and then the processing quality and precision in the additive manufacturingor subtractive manufacturing process are improved; the method includes the following steps that firstly, a processing model is subjected to layering; secondly, peak moving processing path planning parameters are set; thirdly, a processing path of a first layer in the peak moving period is generated; fourthly, processing paths of subsequent various layers in the peak moving period are generated; and fifthly, the step (3) and the step (4) are repeated till the processing paths of all the layers are generated. According to the method, by adjusting the center position deviation of the high-energybeam scanning paths of the adjacent processing layers, that is, a pointed peak is moved away, peak moving for short, energy density homogenization of processing of the plurality of layers is achieved,and the processing quality and precision are improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Interferometric optical fiber sensor based on eccentric structure and manufacturing method thereof

The invention discloses an interferometric fiber-optical sensor based on a core shift structure. The interferometric fiber-optical sensor based on the core shift structure comprises introducing single-mode optical fibers, sensing single-mode optical fibers, multimode optical fibers, leading-out single-mode optical fibers and a spectrograph. The introducing single-mode optical fibers are used for receiving and transmitting light beams from a light source, and outputting the light beams to the sensing single-mode optical fibers. The sensing single-mode optical fibers are in core shift fusion welding relative to the introducing single-mode optical fibers and are used for generating interference and enabling the interfered mode to be coupled to the multimode optical fibers. The multimode optical fibers enable the interfered mode to be coupled to the introducing single-mode optical fibers so as to achieve outputting. The spectrograph is used for executing transmitted spectrum detection on the interfered mode output by the introducing single-mode optical fibers and obtains sensing data correspondingly according to a detection result. The invention further discloses a corresponding manufacturing method. By means of the interferometric fiber-optical sensor based on the core shift structure and the manufacturing method thereof, indeterminacy caused by the offset direction is effectively avoided, the extinction ratio of the entire sensing system can be improved obviously, and meanwhile an optical fiber sensor which is high in sensitivity and convenient to manufacture and package is obtained.
Owner:HUAZHONG UNIV OF SCI & TECH

An aluminum alloy pulsed ultrasonic arc hybrid welding device and welding method thereof

The invention discloses an aluminum alloy pulse ultrasound and electric arc composite welding device and method. Based on ultrasound and electric arc composite welding, the device further comprises a current and voltage detection circuit, a DSP, a single chip microcomputer, a triode switch circuit and a drive circuit. The current and voltage detection circuit is connected with the output end of a matching circuit of an ultrasound generation system. The current and voltage detection circuit is connected with the DSP. The DSP is connected with the drive circuit. The single chip microcomputer is connected with the triode switch circuit. The triode switch circuit is connected with the drive circuit. The drive circuit is connected with a DC / AC full-bridge inversion circuit of the ultrasound generation system. According to the welding method, ultrasound is applied to conduct pulsing processing, and aluminum alloy pulse ultrasound and electric arc composite welding is achieved. The aluminum alloy pulse ultrasound and electric arc composite welding device and method have the advantages of ordinary ultrasound and electric arc composite welding, the electric arc stiffness can be improved, weld penetration is increased, grains are refined, the size of molten drops is reduced, transition frequency is increased, splashing is reduced, high-quality welding under a common welding environment is achieved, aluminum alloy welding pores, welding cracks and the like can be reduced effectively, the microstructure of weld metal is optimized, and the mechanical property of welding connectors is improved remarkably.
Owner:HARBIN INST OF TECH

Steel-aluminum alloy laser welding method adopting nickel-based high-entropy alloy intermediate layer

The invention relates to a steel-aluminum alloy laser welding method adopting a nickel-based high-entropy alloy intermediate layer, and belongs to the technical field of dissimilar material welding. And a nickel-based high-entropy alloy metal foil is used as a middle layer material. The high entropy effect and the high thermal resistance effect of the nickel-based high-entropy alloy metal foil control that no intermetallic compound is generated in a weld fusion area, and the intermetallic compound is only generated at the interface of the fusion area and the aluminum alloy. And by adding the nickel element and the silicon element, generation of Fe-Al intermetallic compounds at the interface is reduced, a Ni-Al-Si phase with better toughness is generated, the metallurgical reaction at the interface is improved, and then the mechanical property of the joint is improved. Laser beams A, B and C are adopted for simultaneous welding, the connecting area of the interface of the steel plate and the aluminum alloy plate is increased, and it is ensured that aluminum in the molten state fully wets and spreads the interface. The anti-shearing strength of a lap joint is improved; and meanwhile, the defects such as cracks and air holes are avoided.
Owner:JILIN UNIV

Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof

The invention relates to a process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and a system thereof. The method comprises the following steps: (1) carrying out grinding on the raw material lignite; (2) burning one part of coal blocks / powder to produce high-temperature flue gas serving as a heat source and carrying out air separation and dring on the other part of coal blocks / powder requiring to be subjected to quality improvement; (3) in the process of air separation, adopting the high-temperature flue gas from the step (2), carrying out drying, separation and dust removal on the qualified coal blocks / powder conforming to the standard grain diameter after air separation, collecting the qualified coal blocks / powder, sending the qualified coal blocks / powder to the forming process, making the unqualified coal blocks / powder drop in a grinding ventilating device to carry out grinding and drying, then continuously completing deep drying by air separation and repeating the steps, wherein the oxygen content in the flue gas is less than 8 percent; and (4) sending one path of waste gas subjected to air separation and drying to the washing process and returning the other path of waste gas serving as a return tail gas part to the step (2) so as to prepare the high-temperature flue gas and carry out air separation. The process has the advantages of safety, energy saving, environment protection, high efficiency, stability and the like.
Owner:SHANDONG TIANLI DRYING TECH & EQUIP

A method for improving the toughness of additively manufactured prototypes

The present invention provides a method for improving the toughness of additively manufactured samples, which includes the following steps: (1) single-pass forming process: obtain single-pass morphology under different laser forming processes, and select forming conditions corresponding to continuous and uniform melt paths; 2) Change the laser scanning strategy to print a cuboid with different scanning line spacing; (3) Cut a small square from the end of the cuboid, grind the six sides of the small square and conduct a density experiment to obtain the density; After the annealing treatment of the cuboid of the small square, it is processed into a tensile strip by wire cutting, and the stress-strain curve and toughness value of the printed part are obtained through the tensile test; (5) Analyze the fracture morphology of the stretched strip, and select a reasonable scan Line spacing value for strong, tough prints. This method improves the energy distribution of the laser acting on the material, reduces thermal stress, and is conducive to obtaining printed samples with high surface precision and good toughness; it is simple and easy to implement, and is conducive to meeting the needs of the 3D printing industry.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI

A Path Planning Method for High Energy Beam Moving Front Machining

The invention discloses a high-energy beam peak moving processing path planning method and belongs to the technical field of high-energy beam manufacturing. According to the high-energy beam peak moving processing path planning method, when filling scanning paths of various to-be-processed layers are generated, between the adjacent various layers, positions, highest in power, in the high-energy beam scanning paths mutually deviate by set amounts, and therefore energy distribution in the processing process is improved, and then the processing quality and precision in the additive manufacturingor subtractive manufacturing process are improved; the method includes the following steps that firstly, a processing model is subjected to layering; secondly, peak moving processing path planning parameters are set; thirdly, a processing path of a first layer in the peak moving period is generated; fourthly, processing paths of subsequent various layers in the peak moving period are generated; and fifthly, the step (3) and the step (4) are repeated till the processing paths of all the layers are generated. According to the method, by adjusting the center position deviation of the high-energybeam scanning paths of the adjacent processing layers, that is, a pointed peak is moved away, peak moving for short, energy density homogenization of processing of the plurality of layers is achieved,and the processing quality and precision are improved.
Owner:HUAZHONG UNIV OF SCI & TECH
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