289results about How to "Improve energy utilization" patented technology

A pulse current assisted extrusion forming device and an extrusion forming method relate to an extrusion forming device and a method thereof. The invention solves the problems that the existing extrusion forming device is great in heat loss, and long in heating time, and the existing extrusion forming method is complicated in technical process flow, low in work efficiency and non-homogenous in distribution of density of the current produced inside the blank on the cross-section and easy to cause skin effect. A current-conducting female mold of the device is arranged in a mold cavity of an insulating outer film; a current-conducting male mold and the current-conducting female mold are used as electrodes and connected on a high frequency pulse power source; the pressure within the range of 5-200MPa is applied to the current-conducting male mold by an upper pressure head according to a yield strength value at the temperature selected by the blank to be formed so that the blank is extrudedto be a required shape by the mold after plastic extrusion deformation; the device has high heating speed and improves the work efficiency; and the method uses the heat effect of pulse current and the electro-plastic effect, thereby obviously improving the forming efficiency of the blank, increasing the material plasticity and saving the energy resource.

The invention discloses a charge control method and system for a low-voltage storage battery of an electric automobile, and a vehicle control unit and relates to the technical field of electric automobile vehicle control. The charge control method comprises the steps that after the electric automobile is started, the vehicle control unit controls a DC/DC convertor to start, and the low-voltage storage battery is precharged; after the low-voltage storage battery is precharged, the vehicle control unit controls the DC/DC convertor to stop, and voltage of the low-voltage storage battery is monitored; the vehicle control unit determines the battery state of the low-voltage storage battery according to the monitored voltage of the low-voltage storage battery; and according to the battery state of the low-voltage storage battery and/or the current operating state of the electric automobile, the DC/DC convertor is controlled to start or stop, and intermittent charge for the low-voltage storage battery is achieved. Through charge control over the low-voltage storage battery, the energy utilization ratio of the electric automobile is increased, and the service life of the low-voltage storage battery is prolonged.

A laser and double-electric-arc double-faced composite welding method for a T-type joint relates to a welding method for laser and electric arc composite welding, and particularly relates to applying the laser and the double-electric-arc double-faced composite welding to a workpiece with a T-type joint to be welded. The invention aims to solve the problems that the single laser penetration welding has strict requirement to the seam fit-up gap and smaller fusion diameter of the faying surface, which results in low shear strength of the seam; and the laser wire filling welding or the double-beam laser synchronous welding process has strict requirement and high cost in the prior T-type joint welding. The laser beams are vertically incident for penetration welding from the top surface of a top plate along the seam formed by the contact of a vertical slab and the top plate of the T-type joint, at the same time, a first electric arc welding gun and a second electric arc welding gun carry out synchronous welding from the two sides of the seam, and the first electric arc welding gun and the second electric arc welding gun are remained to be arranged symmetrically on the left and the right sides of the vertical slab. Compared with the single laser welding, the composite welding method of the invention has the advantages that the capacity usage ratio is improved by more than 30%, the welding speed is increased by more than twice, and the welding efficiency is improved by two to three times.

The invention discloses a device for drying lignite by microwave fluidization. The device comprises a microwave heating chamber and a fluidized bed, wherein the fluidized bed is arranged at the bottom of the microwave heating chamber and communicated with the microwave heating chamber; the microwave heating chamber comprises a metal furnace shell capable of shielding microwaves, a material inlet and a smoke gas exhaust port are arranged at the top of the furnace shell, at least one microwave generation device is arranged on the side surface of the furnace shell, a cylindrical ceramic furnace tube through which microwaves can penetrate is further arranged in the furnace shell, a plurality of layers of annular metal baffle plates are arranged along the inner wall of the ceramic furnace tubefrom top to bottom, a rotating shaft is arranged at the center of the ceramic furnace tube, a plurality of rake-shaped structural members which correspond to the metal baffle plates respectively are fixedly arranged on the rotating shaft along the axial direction, and a tapered material guide disc is fixedly arranged on each rake-shaped structural member; and the fluidized bed is in vertical structure, an air chamber of the fluidized bed is connected with a hot air furnace through a first hot air inlet pipe and an overflow pipe connected with a finished product warehouse is arranged at the upper part of the fluidized bed. By adopting the device, the large-scale, fast, low-energy-consumption and deep-drying production of the lignite can be realized.

The invention discloses a free curved surface micro-lens array device for photo-etching multi-pole illumination. The device comprises a free curved surface micro-lens array 1 and a light-gathering lens group 2 which are arranged in turn along a light beam transmitting direction, wherein the free curved surface micro-lens array 1 consists of free curved surface lens units U which are uniformly distributed in lines and rows and have the same shape; the front surface S1.1 of the free curved surface micro-lens array 1 is a plane, while the back surface S1.2 is a free curved surface; the free curved surface micro-lens array 1 comprises a free curved surface micro-lens array for dipole illumination and a free curved surface micro-lens array for four-pole illumination; the light-gathering lens group 2 comprises at least one light-gathering lens; after being deflected by the free curved surface micro-lens array 1, light beams are imaged infinitely; and after being processed by the light-gathering lens group 2, outgoing light beams are imaged on the back focal plane of the light-gathering lens group 2. The device has the advantages of compact and simple structure, good reshaping effect, high energy utilization ratio, high practicability and wide application range.

The invention discloses a bifocus laser and InFocus arc hybrid welding method, and relates to a welding method. The method includes the steps that (1) a to-be-welded workpiece is polished or washed; (2) the spot diameter is set to range from 0.1 mm to 0.5 mm, and the defocusing amount ranges from -3 mm to +3 mm; (3) welding parameters are set, wherein the arc current ranges from 50 A to 900 A, an included angle formed between a welding gun and the vertical direction ranges from 25 degrees to 55 degrees, the welding speed ranges from 100 mm/min to 1000 mm/min, the wire feeding speed ranges from 100 mm/min to 600 mm/min, the protection gas is inert gas, and the flow of the protection gas ranges from 15 L/min to 30 L/min; and (4) a switch is started, and laser-InFocus arc welding is carried out. According to bifocus lasers and InFocus, as the InFocus arc fusion depth is larger, and a key hole can be formed through welding, when a medium-thickness plate is welded, the lasers can directly act on the bottom of the key hole generated by the InFocus arc, and the fusion depth is continuously increased.

The invention discloses a heating returning closed cooling recirculation system of a Brighton scramjet, which relates to a cooling recirculation system of a scramjet. The invention aims at solving the problems of cooling difficulty, a large amount of cooling fuel flow, insufficient heat sink and gas-fetching difficulty of the fuel supply system of the scramjet of a prior hypersonic aerial vehicle. One end of a central axis is connected with a generator and another end thereof is respectively connected with a gas compressor and a fuel pump. A turbine is arranged on the central axis between the generator and the gas compressor. A cooling channel is arranged on the external wall at the upper part of the scramjet. The cooling recirculation system is provided with a primary cooling loop and a secondary cooling loop. The cooling recirculation system of the scramjet is applicable to the thermal protection of the hypersonic aerial vehicle and the cooling of the scramjet.

The present invention provides a method for generating electricity and co-producing ethanol and biogas by using corn straws. The method comprises the following steps: (1) pre-dipping, (2) a steam explosion treatment, (3) synchronous saccharification fermentation and distillation, (4) solid residue burning power generation, and (5) anaerobic fermentation. According to the method, cellulose, hemicellulose and lignin in straws are respectively converted into ethanol, biogas and electric energy, and the electric energy and the remaining steam during the power generation process are adopted to solve the part of energy consumption during the ethanol production process so as to increase straw utilization rate and reduce cellulosic ethanol production cost.

The invention discloses a production method of 2,5-dichloroaniline, which comprises the steps that solvent-free hydrogenation is performed taking 2,5-dichloronitrobenzene as a raw material; a hydrogenation reactor is formed by connecting in series multiple stages of high pressure reactors; 2,5-dichloronitrobenzene, hydrogen, a catalyst and an assistant ammonia water are mixed and perform continuous hydrogenation reaction; hydrogenation liquid flowing out of the final-stage reactor is subjected to membrane filtration and solid-liquid separation; the separated catalyst is not required to be regenerated, and directly returns to the first-stage reactor; and clear liquid is rectified to obtain a finish product of 2,5-dichloroaniline. Compared with the existing hydrogenation process, the method is easy and simple to operate; a solvent is not required to be added; the raw material cost and energy consumption are saved; the product yield and quality are stable; and the automatic continuous production of 2,5-dichloroaniline can be achieved.

The invention discloses a quantitative pump hydraulic control system of a work mechanism of an underground carrying scraper, comprising a steering oil pump, a steering multi-path valve, a work oil pump, a work multi-path valve and a pilot valve, wherein a plurality of control oil paths are arranged between the pilot valve and the work multi-path valve; an outlet oil path of the steering oil pump is connected with an inlet oil path of the steering multi-path valve; an outlet oil path in the middle path of the steering multi-path valve and an outlet oil path of the work oil pump are combined into an oil path which is connected with an inlet oil path of the work multi-path valve; and a pressure-relief bypass is arranged on the outlet oil path in the middle path of the steering multi-path valve or the outlet oil path of the work oil pump and is provided with a hydraulic control two-position and two-way valve, so that the work mechanism of the underground carrying scraper can automatically select a single-pump oil supply state or a dual-pump oil supply state according to the operation requirement. In addition, the energy utilization rate of the quantitative pump hydraulic control system of the underground carrying scraper can be improved and the equipment availability of the underground carrying scraper can be improved.

The invention provides a heat-power coordinated supply system integrating a fuel cell and carbon dioxide circulation. The heat-power coordinated supply system comprises the solid oxide fuel cell and a power converter. An air preheater and a mixer are connected with the cathode and the anode of the solid oxide fuel cell correspondingly. A fuel preheater and a water supply preheater are connected with the mixer. Waste gas of the solid oxide fuel cell is connected with an afterburner. Part of heat of waste gas exhausted by the afterburner is used for supplying heat to thermal loads, part of heat of the waste gas exhausted by the afterburner is used for supplying heat to the air preheater, the fuel preheater and the water supply preheater, and another part of heat of the waste gas exhausted by the afterburner is used for being transferred to a carbon dioxide working medium of a supercritical carbon dioxide circulation loop, so that power is generated through supercritical carbon dioxide circulation. The invention further provides a heat-power coordinated supply method integrating the fuel cell and carbon dioxide circulation. According to the heat-power coordinated supply system and method, advantages of the solid oxide fuel cell and supercritical carbon dioxide circulation are combined, heat-power coordinated supply is achieved, the system is simple, the structure is compact, the energy utilization rate is high, cost is low, and the system and method are suitable for distributed energy sources.

The invention discloses a design method of LED homogeneous reflector based on optical extension and use thereof; general mathematic models are established by using the theory of optical extension conservation in non-imaging optics according to the luminescence properties of LED light source and the analysis of special target plane illumination requirement; and the reflection surface is a curved surface determined by curved rotation limited by the curvilinear equation in the description. Uniform illumination can be realized by using a single reflector, and higher illumination homogeneity and energy utilization rate are obtained on the target plane. The design method of reflector with uniform illumination in the invention can be used for system of uniform illumination in high requirement, such as microscope illumination system, indoor illumination and optical projection system using LED as light source. Therefore, the invention not only can simplify the structure of the system but also can increase the utilization rate of optical energy, and the illumination homogeneity also can be greatly improved. Therefore, the invention has very good application prospect.

The invention discloses a remediation method for soil contaminated by organic matter. The remediation method comprises the following steps that A, heavy-pollution soil (1) enters a preheating device and is preheated through indirect heating of heat tail gas (31) coming from a thermal desorption device; B, the preheated heavy-pollution soil enters the thermal desorption device and is subjected to thermal desorption through indirect heating of heat flue gas (82) coming from a natural gas combustion device; C, the heavy-pollution soil subjected to thermal desorption enters a mixing device and is mixed with mild-pollution soil (6) entering the mixing device, so that mixed soil (10) is formed; and D, the mixed soil enters a low-temperature desorption device to be subjected to low-temperature desorption, and after being subjected to low-temperature desorption and qualified, the mixed soil is discharged. In the operation process, organic matter separated out through the preheating device, the thermal desorption device and the low-temperature desorption device and blowing air (9) form air (91) containing the organic matter, and after flowing out of the preheating device, the thermal desorption device and the low-temperature desorption device, the air containing the organic matter enters the natural gas combustion device. By means of the remediation method, the heavy-pollution soil and the mild-pollution soil can be remediated at the same time in different modes.

The invention discloses a method for electric heating assisted depressurizing production of a natural gas hydrate reservoir through dual horizontal shafts. Electrodes are installed on the upper horizontal shaft and the lower horizontal shaft correspondingly, the natural gas hydrate reservoir serves as a resistor, electric energy is directly converted into heat energy for mining natural gas hydrate, and electric heating mining is carried out on the natural gas hydrate reservoir accordingly. Specifically, the method includes the steps that the electrodes are installed at the horizontal section of the upper horizontal shaft and the horizontal section of the lower horizontal shaft correspondingly, and the electrodes are connected with a ground control cabinet through cables; the upper horizontal shaft and the lower horizontal shaft form a current loop through water obtained through decomposition of the natural gas hydrate in the depressurizing production stage, the natural gas hydrate reservoir serves as the resistor, electric energy is converted into heat energy, and accordingly electric heating mining of the natural gas hydrate reservoir is achieved. The method is simple in structure, capable of saving energy, environmentally friendly and easy to control, and provides an effective measure for development of the natural gas hydrate reservoir.

The invention discloses a hydrogen fuel battery series-parallel hybrid power system and a passenger car. The hybrid power system comprises a hydrogen fuel battery controller, a hydrogen fuel battery system, a DC/DC converter, a DC/DC controller, a motor controller and a driving motor, wherein the hydrogen fuel battery controller, the hydrogen fuel battery system, the DC/DC converter, the DC/DC controller and the motor controller are sequentially and electrically connected; the driving motor is connected with a dynamic coupler; an electricity distribution cabinet, an external connection charging opening and a power battery are sequentially and electrically connected to the motor controller; an electric generator and the driving motor are mechanically connected with a rear axle speed reducing mechanism through the dynamic coupler; driving wheels are mechanically connected to two sides of the rear axle speed reducing mechanism; and the external connection charging opening is in communication connection with a battery management system. The passenger car with the power system disclosed by the invention is high in energy utilization rate, so that electric quantity is saved; under adverse working conditions, a manner that an engine outputs power to drive the passenger car to travel is adopted, so that electricity can be generated through the electric generator, and is stored in the power battery, the energy utilization and distribution can also be maximized, the total energy of an electrical power system is improved, and the endurance mileage is enlarged.

The invention relates to the technical field of refrigerating equipment, in particular to a refrigerator and a controlling method for ice-making air returning. The refrigerator comprises an ice-making chamber, low-temperature storage chambers, a first evaporation compartment providing refrigerating capacities for the ice-making chamber and a second evaporation compartment providing refrigerating capacities for the low-temperature storage chambers. An air outlet of the first evaporation compartment communicates with an air inlet of the ice-making chamber. The ice-making chamber comprises a first air outlet and second air outlets. The first air outlet of the ice-making chamber communicates with an air returning opening of the first evaporation compartment. The second air outlets of the ice-making chamber communicate with the low-temperature storage chambers. A first air door and second air doors are arranged at the first air outlet and the second air outlets correspondingly. The first evaporation compartment and the low-temperature storage chambers communicate through air returning channels, and third air doors are arranged on the air returning channels between the first evaporation compartment and the low-temperature storage chambers. Different ice-making air returning modes are adopted under different patterns, and the redundant refrigerating capacities can be provide for the low-temperature storage chambers for refrigerating while fast ice-making is guaranteed, so that the energy utilization rate of the refrigerator is increased.

The invention discloses a flash evaporation and freezing united seawater desalination system for a thermal power plant, which consists of a water supply system, a multilevel flash evaporation system, a freezing system, a heat pump system and a thermal system of the thermal power plant. The water supply system is connected with the multilevel flash evaporation system, the freezing system and the thermal system of the thermal power plant respectively through pipelines; and the freezing system is connected with the thermal system of the thermal power plant through the heat pump system and the multilevel flash evaporation system. Through the structural design of a final level flash evaporation chamber of the multilevel flash evaporation system, the heat release of the freezing system and the residual heat of desalination water of the multilevel flash evaporation system are effectively recovered and utilized, water steam required by ice crystal melting is also provided for the freezing system, so that the output of desalination water of the multilevel flash evaporation system is increased, and the desalination water of the freezing system is enabled not to be contaminated. Based on theoptimized design of the water supply system and the heat source selection of the multilevel flash evaporation system, the whole system obtains high integrity and integral optimization, therefore, theflash evaporation and freezing united seawater desalination system has the characteristics that the output of desalination water is high, the quality of desalination water is high, the comprehensive utilization of energy is more complete.

The invention relates to a solar refrigerator, in particular to a solar photovoltaic refrigerator system based on a DC variable frequency compressor and phase change cold storage. The system mainly comprises two parts, i.e. a solar photovoltaic generation system and a refrigeration system of a refrigerator. The solar photovoltaic generation system comprises a photovoltaic panel, a controller and a storage battery; and the refrigeration system of the refrigerator mainly comprises the compressor, a condenser, a throttling device, a freezer / refrigerator evaporator and a cold storage device evaporator connected with the freezer / refrigerator evaporator in parallel. A heat tube is adopted as a device for transferring heat between a cold storage device and the space of the refrigerator. The cold storage device stores cold when electric power is sufficient, and releases cold when the electric power is insufficient. The storage battery supplies power when the cold of the cold storage device is fully released and the power that the photovoltaic panel generates is still insufficient. In addition, the storage battery and the controller of the photovoltaic generation system are integrated with the refrigerator, and the appearance structure is more attractive and practical. The system fully does not consume the electric power of a power grid, and has very profound research significance in saving electric power and effectively utilizing renewable energy.

The invention discloses an external power generating air cylinder for a cymbal type piezoelectric element and solves the problems that an existing pneumatic piezoelectric power generating device is complex in structure, low in energy utilizing rate and high in noise. The external power generating air cylinder comprises an air cylinder body and a piezoelectric power generating device; the power generating device is connected with the rear end of the air cylinder body through a thread pair; and the piezoelectric power generating device is composed of a cavity end cover, a piston, a power generating assembly and a cavity. The power generating assembly is extruded by the piston under the air impact of compressed air and the action of air pressure, the cymbal type piezoelectric element can mechanically deform and return in the lower pressured, and accordingly power can be generated based on the piezoelectric effect. The external power generating air cylinder has the beneficial effects of being simple in structure, high in energy utilizing rate, low in noise and low in cost. The generated power can be collected through a rectifying energy storing circuit and supplied for nodes of internet of things. The external power generating air cylinder has wide application prospect in the technical field of pneumatics.

The invention discloses a fiber reinforced composite as well as a preparing method and an application thereof. The preparing method comprises: providing a fiber product, wherein the fiber product comprises fiber fabric and resin combined with the fiber fabric, and the resin comprises thermosetting and/or thermoplastic resin; arranging at least one fiber product and at least one carbon nanotube film layer in an overlapping manner so as to from a composite premix; and placing the composite premix in a vacuum molding device, then pumping vacuum, charging the at least one carbon nanotube film in the composite premix with current, enabling the at least one carbon nanotube film in the composite premix to produce heat, and accordingly heating and curing the composite premix so as to form the fiber reinforced composite. By the technology of the invention, energy consumption in the preparing process of the fiber reinforced composite can be effectively reduced, the energy converting efficiency is increased, and the molding cycle is shortened; and at the same time, the fiber reinforced composite has great electricity and heat conducting properties and wide application prospects.

The invention relates to a multistage atomization gas-liquid two-phase large-caliber mist nozzle. According to the technical scheme, the middle of a small cylinder body of a liquid inlet pipe (2) is fixedly connected with the center of a top cover (3), and a large cylinder body of the liquid inlet pipe (2) and a conical table of the liquid inlet pipe (2) are located in a rotational flow cylinder (4). The outer wall of the large cylinder body of the liquid inlet pipe (2) has a distance of 3-8 mm with the inner wall of a hollow cylinder body of the rotational flow cylinder (4). The minimum distance of a circular seam (11) formed between the outer wall of the conical table of the liquid inlet pipe (2) and the inner wall of a hollow conical table of the rotational flow cylinder (4) is 0.3-1 mm. The upper portion of the hollow cylinder body of the rotational flow cylinder (4) is horizontally provided with an air inlet pipe (1), and one end of the air inlet pipe (1) penetrates through a shell of the rotational flow cylinder (4) and is tangent with the outer wall of the small cylinder body of the liquid inlet pipe (2). The outer diameter of the air inlet pipe (1) is the difference between the inner diameter of the hollow cylinder body of the rotational flow cylinder (4) and the outer diameter of the small cylinder body of the liquid inlet pipe (2). The air inlet pipe (1) is located between the top cover (3) and the large cylinder body of the liquid inlet pipe (2). The multistage atomization gas-liquid two-phase large-caliber mist nozzle has the advantages that the structure is simple, mist drops are evenly distributed, and the nozzle cannot be blocked.

The invention discloses a rapid drying method for a ceramic fiberboard. The rapid drying method is characterized in that microwaves are adopted as a hot source to heating and drying the ceramic fiberboard when hot blast is used for drying the ceramic fiberboard. The rapid drying method has the advantage of good drying uniformity; the microwaves have strong penetrating power and can be used for drying from the interior, so that all parts are heated uniformly; and with the decrease of water content, the absorbed microwave energy can be reduced, the ceramic fiberboard per se does not absorb the microwaves, water has strong absorption power, so that the part with high water content is high in energy, and the purpose of uniform drying is finally achieved. In a traditional drying manner, because of the heat insulation property of a fire-resistant board per se, the interior of the fire-resistant board is slow in temperature rise and slow in drying, and as the time goes on, the drying becomes slower and slower. Microwave drying is beneficial to prevention of low-water-content part from overhigh temperature to result in deterioration and scorching of internal fiber binders and yellowing and quality losses of the ceramic fiberboard.

The invention provides a methane reforming system.In the system, a methane and vapor pipeline passes through a hydrogen separation device and a carbon dioxide separation device in sequence in a circulating mode, hydrogen and carbon dioxide generated from wet reformation of methane are separated alternately to promote methane reformation reaction equilibrium to move to the forward direction, and then methane conversion rate is increased greatly compared with a one-time reaction conversion rate under the non-circulating condition.Besides, a heat exchanger is additionally arranged between the hydrogen separation device and the carbon dioxide device to recover lost heat generated by difference in operation temperatures of the hydrogen separation device and the carbon dioxide separation device, so that the energy utilization rate of the system is increased.

The invention discloses a wave aberration measuring device and a wave aberration measuring method of an optical system. The device comprises a linear polarization plane wave producing source, a 1/2 wave plate, a polarization splitting prism, a 1/4 wave plate, a reflection unit and an HS (Shack-Hartmann) wave-front sensor, wherein the linear polarization plane wave producing source is used for generating a linear polarization plane wave; the 1/2 wave plate is used for converting the linear polarization plane wave to be an s polarization plane wave; the polarization splitting prism is used for reflecting the s polarization plane wave transmitted by the 1/2 wave plate to be 1/4 wave plate, and transmitting p polarized light transmitted by the 1/4 wave plate, and converting a circular polarization plane wave of the reflecting device to be a p polarization plane wave; the reflecting device is used for returning a circular polarization plane of the 1/4 wave plate along the same route; and the HS wave-front sensor is used for measuring the wave aberration of the p polarized light entering the HS wave-front sensor. The wave aberration measuring device is capable of realizing the high-precision detection of various complicate optical systems.

The invention belongs to the field of initiation apparatuses, and discloses a laser initiation flyer type initiating explosive-free detonator. The detonator comprises a detonator matrix filled with three-times high explosive, a detonator exciting device consisting of an inner cap and four-times explosive, and a laser initiation system, wherein the laser initiation system consists of a rubber plug, an optical fiber and a laser generating device connected with the optical fiber; the rubber plug is plugged into the inner cap in a detonator shell, the outer surface of the rubber plug is in tight fit with the inner walls of the detonator shell and the inner cap, the middle of the rubber plug is provided with a through hole, the optical fiber connected with the laser generating device passes through the hole, the end of the optical fiber is flush with the lower port of the rubber plug, and the distance between the lower port and the surface of the four-times explosive in the inner cap is less than 15 millimeters; and the laser wavelength of the laser generating device is in a range of 500 to 1,500 nanometers, the optical fiber is a single mode fiber or a multi-mode fiber, and the energy of the laser output by the optical fiber is more than 0.4W. Through the detonator, initiation of the non-dispersed four-times explosive is realized, and the reliability and the safety of the initiation system are improved; and because the transmission optical fiber has high-temperature and high-pressure resistance, the detonator is suitable for severe environments of deep water, high pressure and the like.

The invention discloses an exiting device for laser hybrid welding. The exiting device for laser hybrid welding comprises a laser welding head, a semiconductor laser device and an optical fiber laser device, wherein the semiconductor laser device and the optical fiber laser device are respectively connected with the laser welding head; the semiconductor laser device transmits semiconductor laser; the optical fiber laser device transmits optical fiber laser; a light path of the laser welding head comprises a semiconductor light path, an optical fiber light path and a coaxial monitoring light path; a laser light beam of the semiconductor light path and a laser light beam of the optical fiber light path are superposed into a light beam for welding at a focus point of the laser welding head; a welding position is illuminated through an external light source; and light reflected by the welding position is displayed by a monitor after the welding position is imaged a coaxial monitoring light path. The technical problems that traditional welding pores are abundant, hot crack tendency is high, welding spatter is severe, welding joints are large and the like are solved. The exiting device for laser hybrid welding has the characteristics that energy utilization rate is increased, key holes are stable, the device is suitable for high-speed welding, solidification speed is reduced, the pores are also reduced, hot crack tendency is decreased, welding spatter is reduced, forming of welding joints is improved, so that a welding surface is smooth and the like.

The invention discloses a beam splitter for a wearable display and a manufacturing method thereof. The beam splitter comprises two identical rectangular prisms. The inclined planes of both the rectangular prisms face each other and are fixed together. Multi-layer film piles formed by crossed lamination of high and low refractive index material layers are disposed between the two inclined planes. The multi-layer film piles selectively reflect an RGB (red, green and blue) LED light source of s-polarized light, transmits other wave bands of the s-polarized light, and transmits p-polarized light of a whole visible wave band. A glued prism polarization beam splitter and a bandpass optical filter are combined together, and appropriate high and low refractive index films are adopted to simultaneously meet a Brewster's angle, so a convetional polarization beam splitting effect is achieved. Through the design of a high and low refractive index film system, multi-channel bandpass filtering is achieved, so the energy of rest wave bands can be reutilized while specific wavelength high reflection can be realized, and therefore the energy utilization rate of applications of the polarization beam splitter to a helmet display or the like is greatly increased. The beam splitter is easy to manufacture, is low in cost, and is convenient for large scale and batch production.

The invention provides a laser backlight surface light source which comprises a laser source, a beam-splitter mirror, a reflecting mirror, two beam expanding mirrors, two tiny light guide bars and a light guide plate, wherein the laser source is positioned in front of the beam-splitter mirror, and the reflecting mirror is arranged behind the beam-splitter mirror; the two beam expanding mirrors are respectively arranged at one side of the beam-splitter mirror and the reflecting mirror; the tiny light guide bars are embedded at the upper and the lower sides of the light guide plate and respectively positioned at one side of the two beam expanding mirrors; after being treated by light splitting and beam expanding, a laser beam passes through the two tiny light guide bars to form a cylinder or line light source evenly giving out light towards the side; and the light given out from the side of the tiny light guide bars enters the light guide plate for homogenizing light, so that the laser backlight surface light source can be formed. The light source has reasonable structure, and is far better than a backlight adopted by the existing liquid crystal display system in the aspects of color gamut range, color brightness degree and color fidelity when being used for liquid crystal display.

The invention relates to a method and power system for driving an automobile through high-pressure hydrogen mixed fuel. The power system comprises a hydrogen mixed fuel storage tank, a piston type gas engine, a turbocharging unit, a heat exchanger, a heat storage device, a cold storage device and an air pipeline. High-pressure mixed fuel gas in the hydrogen mixed fuel storage tank is subjected to dehydration and heat exchange and arrives at the piston type gas engine after releasing pressure energy through the turbocharging unit and the cold storage device releases the refrigerating capacity or after releasing pressure energy through a pressure energy utilization and control unit, air arrives at the piston type gas engine after being compressed through the turbocharging unit, and the piston type gas engine conducts combustion and does work so as to drive the automobile to run. Waste gas is discharged by releasing the pressure energy through the turbocharging unit, or is discharged after exchanging heat with the hydrogen mixed fuel gas. According to the method and the power system, the turbocharging unit is driven by the pressure energy of the high-pressure mixed fuel gas to compress the air, the refrigerating capacity generated after the high-pressure mixed fuel gas expands and cools is recycled, the pressure energy of the high-pressure hydrogen mixed fuel is sufficiently used, and the thermal efficiency of an automobile power system is improved.

The invention relates to an electrochemical CO gas sensor which comprises a shell (6), a porous film (7), a reference electrode (1), a working electrode (2) and an auxiliary electrode (3). The reference electrode (1), the working electrode (2) and the auxiliary electrode (3) are encapsulated in the shell (6). The electrochemical CO gas sensor is characterized in that a composite catalyst film (5)is coated on the working electrode (2), hydrogel (4) is simultaneously coated on the reference electrode (1), the auxiliary electrode (3) and the composite catalyst film (5) which is formed by mixinga mixed catalyst and N-octyl pyridinium hexafluorophosphate in a mass ratio of 1-20 to 1, the mixed catalyst is formed by mixing nano Pt/carbon nanotubes and nano nickel / carbon nanotubes in a mass ratio of 10-40 to 1, and the hydrogel is gel formed in a way that superabsorbent absorbs water which contains dissolved lithium perchlorate and polyvinyl alcohol. The sensor is watertight and has the service life of 3-5 years and stable performance, and the decorative film on the working electrode is replaceable.