35results about How to "Improve conversion utilization efficiency" patented technology

The invention provides an LNG energy comprehensive utilization system which comprises a cold recovery system, a distribution type energy system, an ice storage air-conditioner system, a water collector, a water segregator, and air-conditioner tail end equipment. The cold recovery system and the ice storage air-conditioner system are connected with the ice storage device through cold recovery equipment. The distribution type energy system is connected with the cold recovery system. The ice storage air-conditioner system is connected with the distribution type energy system through the water collector and the water segregator. The efficient LNG energy comprehensive utilization system is formed through the organic combination of LNG gasification equipment and the cold recovery equipment, the organic combination of natural gas generation equipment and waste heat recovery equipment, and the organic combination of the ice storage device and the air-conditioner equipment, and the gradient utilization and the comprehensive utilization of energy are realized. The LNG energy comprehensive utilization system uses LNG as a source, only emits little low-temperature smoke finally, greatly reduces carbon emission amount and heat emission amount, and greatly improves comprehensive energy utilization efficiency.

The invention belongs to the field of biological fermentation and particularly provides a preparation method of a liquid selenium-rich ferment bacterial fertilizer. The preparation method uses poor fruits, dropped fruits, fruit residues, fruit and vegetable straw and other waste produced in the agricultural production as raw materials, and the liquid selenium-rich ferment bacterial fertilizer is finally obtained by utilizing multiple times of fermentation and adding selenium-rich raw materials and has very good ecological benefits. By adopting microbial technology, inorganic selenium is converted into biological active selenium, and the ferment bacterial fertilizer integrating selenium, organic matter, organic acid, calcium, magnesium, boron and other medium trace elements is prepared and has the advantages of being large in effective number of living bacteria, balanced in nutrition, obvious in selenium-rich effect, obvious in acting effect, good in safety performance and the like.

The invention discloses a lactobacillus paracasei fermented feed and a preparation method thereof, fermenting equipment and an application of the lactobacillus paracasei fermented feed. The preparation method comprises a lactobacillus paracasei liquid fermentation step and a lactobacillus paracasei solid fermentation step, and has the advantages of simple process, low probability of infection of bacteria, low investment cost, high production efficiency, low energy consumption, and the like. The fermenting equipment comprises a supporting seat, a fermenting tank and a stirring assembly, wherein the stirring assembly is arranged in the fermenting tank; the fermenting tank comprises a tank body provided with a feeding hole and a discharging hole, and a sealing cover used for sealing the feeding hole and the discharging hole; the sealing cover is movably connected with the tank body; the tank body is arranged on the supporting seat in a swinging way; and a swinging driving assembly used for driving the tank body to incline for pouring materials is arranged on the supporting seat. The fermenting equipment has the advantages of compact structure, small floor area, easiness in operating, attractive appearance, convenience in cleaning, good mixing effect, capability of greatly lowering the labor strength, and the like. The lactobacillus paracasei fermented feed and the application thereof have the advantages that the occurrence rate of diarrhea of piglets after weaning can be greatly reduced, the growing speeds of pigs are increased, the feed transformation and utilization efficiency is improved, and the like.

The invention discloses an interference-free middle-deep-stratum geothermal resource gradient utilization heating system. The interference-free middle-deep-stratum geothermal resource gradient utilization heating system comprises a casing pipe (1), a heat insulation pipe (2), a heat exchanger (7), a high-temperature heat pump (8) and a low-temperature heat pump (9). According to the interference-free middle-deep-stratum geothermal resource gradient utilization heating system, through a three-level system including the heat exchanger, the high-temperature heat pump and the low-temperature heatpump, the high-grade portion, the middle-grade portion and the low-grade portion in geothermal energy can be sequentially absorbed and utilized, the middle-deep-stratum geothermal resource gradient utilization heating purpose is finally achieved, and the energy efficiency ratio and the heating load of the heating system are significantly increased. The heat insulation pipe (especially a vacuum heat insulation pipe) is taken as a central pipe, therefore, the heat dissipation capacity of water in the central pipe can be effectively reduced, and the grade of the geothermal energy can be effectively kept. Meanwhile, the advantages of an interference-free geothermal exploitation mode adopting the vacuum heat insulation pipe and the geothermal resource gradient utilization heating system are combined, and therefore the characteristics of being efficient, environmentally friendly and capable of achieving sustainable utilization are achieved.

The invention discloses an emulsified diesel oil composition containing a large quantity of glucose, which belongs to the biomass processing and fuel oil emulsification technical field. The technology solves the problems that: the prior process for transforming the glucose or plant starch or plant cellulose into liquid biofuel has high energy consumption and is easy to cause the environmental pollution and so on. The glucose or a plant starch hydrolysate or a plant cellulose hydrolysate, a glucose mixture, is directly added into diesel oil, and emulsified diesel oil fuel which has low cost and steady performance and contains the glucose is produced through the emulsification; and the glucose can be efficiently combusted in a diesel engine to achieve the aims of adding fuel heat value, reducing pollution and saving fuel. The emulsified diesel oil consists of the diesel oil accounting for 70 to 90 percent of the total weight, the glucose mixture formed by dehydrating the plant starch or the plant cellulose which takes glucose water solution accounting for 10 to 30 percent of the total weight (glucose accounts for 10 to 50 percent of the weight of the water solution) or the glucose as main compositions, and emulsifier accounts for 0.1 to 5.0 percent of the diesel oil and the glucose mixture. The glucose in the fuel can efficiently combust in the diesel engine.

The invention belongs to the technical field of tobacco processing and biomass utilization conversion, and particularly relates to a processingmethod of anaerobic solid-state fermentation tobacco stems andapplication thereof. In intensified fermentation pretreatment:recovered tobacco stems are cut into segments with length of 1-5cm, 0.5-1 times of water is added,seed liquid is inoculated, andsolid-state fermentation is conducted under anaerobic and normal temperature conditions for 5-30 days to obtainfermented tobacco stems; conversion and utilization of the fermented tobacco stems: 3-6 timesof water is added to the fermented tobacco stems, seed liquid and cellulase are inoculated, and anaerobic fermentation is conducted at 45-55 DEG C for 72 h to complete the anaerobic conversion process. After enhanced bacterial solid-state anaerobic fermentation, the reduction of cell wall substances can improve the content of reducing sugars intobacco stemmaterials and reduce irritation.

The invention relates to a medicinal plant selenium-enriched and zinc-enriched enzyme and a preparation method thereof. Aiming at overcoming shortcomings of the prior art, the technical scheme is as follows: the main ingredient of the medicinal plant selenium-enriched and zinc-enriched enzyme consists of the following raw material components in percentage by weight: 75-80% of degummed stems and leaves of brasenia schreberi, 2-3% of folium perillae, 8-9% of rosa roxburghii tratt, 1-2% of marigold petals, 2-3% of rhizoma galangae, 2-3% of bulbus allii macrostemi, 1-2% of fennel, 1% of piperis fructus, 3-4% of dioscoreae rhizoma and 1% of cassia bark, totaling 100% in percentage by weight. Except for the brasenia schreberi, the rosa roxburghii tratt, the dioscoreae rhizoma and the marigold, all components in the prescription are medicinal and dietary seasonings which are capable of improving taste, increasing aroma, removing fishy smell and stimulating appetite, and have a long application history. The enzyme is unique in flavor and special in taste, and the enzyme is more significant in health-caring and conditioning effects.

The invention discloses a fertilization method for increasing selenium content in flaxseed and a production method of the flaxseed. A selenium element microelement fertilizer is selected as a nutrient substance which is rich in selenium in the flaxseed, the fertilization way is that foliage spraying is performed on flax plants before 11:00 AM and after 15:00 PM in sunny and airless weather, and when the selenium element microelement fertilizer is used, a recommended using quantity for 667m<2> of the selenium element microelement fertilizer is firstly dissolved in a small amount of water, then 30kg of water is added for uniform stirring, and a sprayer is used for uniform spraying. The fertilization quantity, the fertilization period, the number of fertilization times and the fertilization effects are as follows: 1000ml-1500ml of the selenium element microelement fertilizer is sprayed in 667m<2> of flax during green fruit period, and the selenium content in the flaxseed can achieve 0.2mg / kg-0.3mg / kg; 2000ml-2500ml of the selenium element microelement fertilizer is sprayed in 667m<2> of the flax during the green fruit period, and the selenium content in the flaxseed can achieve 1.5mg / kg-1.8mg / kg; and the selenium element microelement fertilizer is respectively sprayed once during squaring period and the green fruit period of the flax, the using quantity in each 667m<2> is 2000ml-2500ml, and the selenium content in the flaxseed can achieve 2.1-2.9mg / kg.

The invention provides a microorganism-photoelectrochemistry-thermoelectrochemistry coupling hydrogen production system. The system comprises a microbial anode, a photocathode and a thermochemical battery; the thermochemical battery is located between the microbial anode and the photocathode, and ion exchange membranes are arranged between the cathode of the thermochemical battery and the microbial anode and between the anode of the thermochemical battery and the photocathode; the photocathode is connected with the anode of the thermochemical battery through an insulating heat-conducting material, so that the heat of the photocathode is effectively transferred to the anode of the thermochemical battery; the microbial anode and the photocathode are connected to an external circuit and equipment through wires; and the anode and the cathode of the thermochemical battery are directly connected through an external circuit to form an internal loop and a formed voltage drop. The thermochemical cell is coupled into the near microorganism-photoelectrocatalysis system, so that on one hand, the solar energy conversion and utilization efficiency of the system is improved; and meanwhile, the influence of photo-thermal on the microbial anode is reduced.

The invention discloses a method and device for determination of biomass material biogas generating potential, and belongs to the technical field of biomass energy utilization and biogas production. According to the method and the device, mainly by simulation of actual working conditions of anaerobic digestion treatment, biomass material biogas generating capacity can be quickly and efficiently measured by experiments, and the biomass material biogas generating potential can be judged by the actual production of biogas.

The invention discloses a multifunctional political education publicity board. The multifunctional political education publicity board comprises a stand column, wherein a rectangular frame is arranged at the top end of the stand column; a display panel is arranged on one side of the rectangular frame through a plurality of first cross arms; a support plate is arranged on the other side of the rectangular frame; the upper end of the support plate is hinged with the upper end of one corresponding side of the rectangular frame; the lower part of the support plate is connected with the lower part of the rectangular frame through a telescopic mechanism; a solar power generation module is arranged on the outer side of the support plate through second cross beams; the first cross beams and the second cross beams adopt piezoelectric cantilever beams; haze treatment mechanisms are arranged in the rectangular frame; a control module, a communication module and an electric energy management module are arranged below the rectangular frame. According to the multifunctional political education publicity board, wind energy and solar energy can be converted to be used by equipment, conversion and utilization efficiency of energy is higher, and cost of operation and maintenance is greatly reduced; besides, the multifunctional political education publicity board has a haze treatment function, can purify air in the campus and provides guarantee for body health of students.

The invention discloses a self-generating publicity board for politics teaching. The self-generating publicity board comprises a stand column, wherein a rectangular framework is arranged at the top end of the stand column; a display panel is arranged on one side of the rectangular framework through a plurality of first cross arms; a supporting board is arranged on the other side of the rectangular framework, the upper end of the supporting board is hinged with the upper end of the corresponding side of the rectangular framework, and the lower part of the supporting board is connected with the lower part of the rectangular framework through a telescopic mechanism; a solar power generation module is arranged on the outside of the supporting board through second cross arms; piezoelectric cantilever beams are used as the first cross arms and the second cross arms; haze treating mechanisms are arranged in the rectangular framework; a laying-down mechanism is arranged at the lower part of the stand column; an air velocity transducer is arranged above the display panel; a strong wind protecting mechanism is arranged on the ground behind the display panel. According to the he publicity board, wind energy and solar energy can be converted for equipment to use, the operation and maintenance costs are reduced, air in a campus can be purified, the publicity board can be folded and laid down for protection when the wind is strong, equipment can be prevented from being damaged by wind, and the safety coefficient is higher.

The invention discloses a fertilizing method for increasing the content of selenium in flaxseeds and a production method for flaxseeds. Micro element fertilizer containing selenium is selected as nutrient substance of selenium-rich flaxseeds, the fertilizing way is as follows: fertilizer spraying to leaf surfaces of flax before 11:00 Am and 15:00 Pm in a clear and calm weather, during the use, firstly, the micro element fertilizer containing selenium, with the dose recommended for 667 m<2>, is resolved by a little water, and then added with 30 kg water for stirring, and a sprayer is used for uniform spraying. The fertilizing amount, the fertilizing time, the fertilizing frequency and the fertilizing effect are as follows: in the green fruit stage of the flax, if 1000 ml to 1500 ml of micro element fertilizer containing selenium is sprayed for 667 m<2>, the content of the selenium in flaxseeds can reach 0.2 mg / kg to 0.3 mg / kg, if 2000 ml to 2500 ml micro element fertilizer containing selenium is sprayed for 667 m<2>, the content of the selenium in flaxseeds can reach 1.5 mg / kg to 1.8 mg / kg; and the micro element fertilizer containing selenium is sprayed for one time in each of the green fruit stage and the bud stage, 2000 to 2500 ml micro element fertilizer containing selenium is sprayed for 667 m<2>, and the content of selenium in flaxseeds can reach 2.1 to 2.9 mg / kg.

The invention discloses a power generation device capable of swinging by irregular wind power blowing. The power generation device comprises a machine body, wherein a power generation cavity is formedin the machine body, gear cavities are formed in the front side, the rear side, the left side and the right side of the power generation cavity respectively, a rotating cavity is formed in the upperside of each gear cavity, a moving cavity is formed in the upper side of the machine body, a wind power device utilizing wind energy is arranged on the outer side of the upper side surface of the machine body, the wind power device comprises two supporting columns fixedly arranged on the upper side surface of the machine body, a supporting plate is fixedly arranged on the supporting columns, a fixing block is fixedly arranged in the supporting plate, a swing ball is rotationally connected to the fixing block, a swing device for converting wind energy for use is arranged on the upper side of the machine body, and a power generation device body for converting the wind energy into electric energy is arranged on the lower side of the machine body. According to the device, the wind energy can be utilized to generate the electric energy, irregularly blown wind is utilized, and the wind energy can be accumulated, so that a generator can stably and continuously generate electricity.

A Lactobacillus paracasei fermented feed and its preparation method, fermentation equipment and application. The preparation method includes the steps of liquid fermentation of Lactobacillus paracasei and solid fermentation of Lactobacillus paracasei. High efficiency, low energy consumption and other advantages. The fermentation equipment includes a support seat, a fermentation tank and a stirring assembly installed in the fermentation tank. The fermentation tank includes a tank body with a material inlet and outlet and a sealing cover for sealing the material inlet and outlet. The sealing cover is movably connected with the tank body, and the tank body can be The swinging device is installed on the support seat, and the support seat is equipped with a swing drive assembly for driving the tank to tilt and discharge. It has the advantages of compact structure, small footprint, simple operation, beautiful appearance, convenient cleaning, good mixing effect, and can greatly reduce the Labor intensity and other advantages. The Lactobacillus paracasei fermented feed and its use have the advantages of being able to significantly reduce the incidence of post-weaning diarrhea in piglets, increase the growth rate of pigs, and improve the efficiency of feed conversion and utilization.

The invention discloses a fuel cell comprehensive energy supply system which comprises a hydrogen gas source subsystem, a fuel cell subsystem, a power supply control subsystem, a programmable control subsystem, a hot water storage and distribution subsystem and an absorption type low-temperature waste heat refrigeration subsystem. The system can be independently operated in an off-grid mode and can also be operated in a grid-connected mode. Chemical energy generated by reaction of hydrogen and oxygen is converted into electric energy needed by a user through the fuel cell, and external power supply is achieved; meanwhile, cooling water is utilized to reasonably utilize heat generated by a galvanic pile reaction in the fuel cell through heat exchange, and low-temperature hot water generated by the fuel cell is secondarily utilized under the action of the absorption type low-temperature waste heat refrigerating system, so that external cooling and heat supply are realized, the defect of single energy supply of the fuel cell can be overcome, and the energy utilization rate of the fuel cell is increased. And a comprehensive energy supply mode with a multi-scene adaptation capability is realized.

The invention discloses an energy-saving pressurizing liquid supplementing system. The system comprises a steam generating device and a liquid supplementing tank, wherein part of high-pressure steam in the steam generating device is conveyed to the liquid supplementing tank through a gas conveying pipe and used for pressurizing liquid in the liquid supplementing tank; and the liquid supplementing tank is used for supplementing liquid to the steam generating device through a first liquid supplementing pipe. The gas conveying pipe is arranged between the steam generating device and the liquid supplementing tank, and the high-pressure steam in the steam generating device is fully and effectively utilized to pressurize the liquid in the liquid supplementing tank, so that the liquid in the liquid supplementing tank can be easily fed into the steam generating device, and the overall energy conversion and utilization efficiency of the system is improved; and the designed operation of the system is more energy-saving and environment-friendly.

The invention discloses a catalytic pyrolysis method for biomass. The method comprises the following steps of adopting loaded phosphotungstic acid HZSM-5 as an active agent, wherein the loading amountof the phosphotungstic acid is 5-15%; taking a mixture consisting of TiC powder and SiC powder as a composite wave absorbing agent, wherein the mass ratio of TiC to SiC is (0.2-0.4):1; taking a mixture consisting of the active agent and the composite wave absorbing agent as a microwave induction catalyst, wherein the mass ratio of the active agent to the composite wave absorbing agent is (0.6-1):1; uniformly mixing the microwave induction catalyst with the biomass according to the mass ratio of (0.3-0.5):1, and transferring the mixture into a microwave reactor for a catalytic pyrolysis reaction, wherein the microwave power is 400-600 W, the vacuum pressure is 10-30 kPa, and the reaction time is 3-5 minutes; condensing extracted pyrolysis gas to obtain a liquid-phase product, wherein an oil phase at the upper layer is biological oil; washing solid products remaining in the reactor with distilled water, and then separating and drying the solid products to obtain a biochar by-product. The method has the advantages that the biomass conversion efficiency is high, the selectivity of monocyclic aromatic hydrocarbon compounds is high, and the adsorption performance of the biochar by-product is excellent.

The invention discloses a floating type sea wave energy conversion device which is used for mainly solving the problems that an energy collector is easy to have one-way deflection due to the fact that a hauling cable is directly connected with the energy collector, the efficiency conversion is low and stable energy output cannot be obtained. The floating type sea wave energy conversion device comprises a base, a generator, a hydraulic motor, the energy collector and an energy converter, wherein a fixing rod is arranged on the base; the fixing rod comprises an annular gear part and an optical shaft part; a gear matched with the annular gear part is arranged at the energy collector, a hauling cable winding wheel is arranged at one shaft end of the gear, and the energy collector is sleeved on the optical shaft part for moving up and down; the energy converter comprises a cylinder body, a piston, an end cover and the hauling cable; the hauling cable is connected between the piston and the hauling cable winding wheel, a guide column sleeved with a spiral spring is arranged between the end cover at the lower end of the energy collector and the piston, and the guide column penetrates through the end cover and is matched with the end cover with interval. The gear matched with the annular gear part is used for driving the piston for executing reciprocating motion through the hauling cable, the energy conversion efficiency is improved and stable energy output can be obtained.

According to the closed radial double-rotor natural gas excess pressure power generation device, gas acts on a left impeller and a right impeller respectively, so that an inner rotor and an outer rotor rotate relatively, and the power generation capacity and the device stability are improved. Comprising a shell system, an energy conversion system, a power generation system, a power transmission system, a natural gas input shunting pipeline and a natural gas output converging pipeline, the power generation system comprises an inner rotor and an outer rotor, the rotation directions of the inner rotor and the outer rotor are opposite, and the outer rotor outputs electric energy through the power transmission system; the shell system is provided with a left cavity, a middle cavity and a right cavity which are sequentially arranged, a power generation system is arranged in the middle cavity, the left cavity and the right cavity are connected with a natural gas input shunting pipeline and a natural gas output converging pipeline respectively, energy conversion systems are arranged in the left cavity and the right cavity respectively, the energy conversion system in the left cavity is in power connection with the outer rotor, and the energy conversion system in the right cavity is in power connection with the outer rotor. And the energy conversion system in the right cavity is in power connection with the inner rotor.

The invention relates to a control circuit for real-time supply of motor braking energy to an AC inertial load, including a motor main control circuit, a braking energy DC / AC dispatching circuit, specifically including a rectifier module PR1, an IGBT module PM1, a DC / AC module PW1, a motor Control module CU1, AC inertial load AL1, motor M1, encoder PG1, brake tube VT1, voltage sensor VS1, DC / AC module PW1, contactor K1, freewheeling diode D1, rectifier inductor L1, buffer inductor L2, rectifier capacitor C1, buffer capacitor C2. The invention can automatically convert the braking energy of the motor through DC / AC conversion and directly convert it to this kind of AC inertial electric load for power supply. The conversion and utilization efficiency of the braking energy of the motor in the invention is high, the energy saving effect is good, the cost is low, and the application is convenient. High reliability.

The invention relates to the technical field of space debris utilization, in particular to a space debris energy transformation device and method based on laser propelling. The device comprises a device body, an optical aligning mechanism, an optical beam splitting mechanism, optical working medium coupling mechanism and working medium supplying mechanisms, wherein the optical beam splitting mechanism is arranged on the bottom of the optical aligning mechanism, and the optical working medium coupling mechanisms are correspondingly connected with the working medium supplying mechanisms in a one-to-one manner. According to the space debris energy transformation device and method based on laser propelling, space debris serves as a solid working medium for laser propelling, by means of interaction of laser and the collected space debris, space debris ablation and gasification are caused, the space debris is ionized to form plasmas, plasma deflagration waves compress the surface of the space debris to produce thrust, so that reuse of the space debris is achieved. The space debris energy transformation device has the beneficial effects that the structure is simple, the energy transformation utilization rate is high, and secondary pollution cannot be caused for the space environment. The space debris energy transformation and method based on laser propelling can be directly applied to in-orbit control over spacecrafts.

The invention provides a heat energy recovery system of a wind power cabin cover. The heat energy recovery system comprises a wind power cabin cover, a triggering device, a magnet and an independently-arranged electricity storage box, wherein a storage battery and an induction tube are arranged in the electricity storage box, and a wire is wound on the peripheral surface of the induction tube; thetwo ends of the wire are connected with the positive electrode and the negative electrode of the storage battery respectively; the magnet is connected to the wind power cabin cover through the triggering device; the triggering device transfers and converters the heat energy within the wind power cabin cover into motion kinetic energy of the magnet, so that the magnet extends into the induction tube or extends out of the induction tube. According to the technical scheme, the heat energy absorbed from the interior or the surface of the wind power cabin cover is converted into the reciprocatingmotion of the magnet which extends into or extends out of the induction tube and the reciprocating motion of an insulating rod which extends into or extends out of a touch electric appliance, so thatthe purpose of collecting and recycling the heat energy as far as possible is achieved, the storage battery is effectively prevented from being discharged when the storage battery is charged, and theenergy conversion and utilization efficiency is effectively improved.

An MPPT controller namely highest power tracing is adopted in an existing wind-solar hybrid generation system. Due to different characteristic curves of photoelectricity and wind power generation and the interplay between a wind turbine and photoelectricity, the output power of the whole system is low in the wind-solar simultaneous working process; if photoelectricity and wind power generation are controlled in an MPPT mode, technological complexity is improved, reliability of the system is reduced, own loss is large, and both the efficiency ratio and the price performance ratio are low. Aiming at the factor, the efficient wind-solar hybrid charging control system is provided, according to the main purpose, wind power generation and photoelectricity are input into first-level energy storage, converged into second-level energy storage after signal adjustment is carried out and then applied, and therefore electric energy output by the wind-solar hybrid generation system is received and applied to the maximum.

The invention belongs to the technical field of high-efficiency conversion of low-grade heat sources, and provides a low-grade heat source-driven water-electricity-cold poly-generation system based onocean thermal energy. The system comprises a heater, a steam generator, a separator, an expansion machine, a second-stage ejector, a regenerator, a condenser, an evaporator, a multi-stage spray flashevaporation seawater desalination system, a surface warm seawater input channel, a deep cold seawater input channel, a low-grade heat source input channel and a cold supply pipe. The system providedby the invention is a water-electricity-cold poly-generation system coupled with a multi-stage spray flash evaporation seawater desalination technology, and the targets of recycling low-grade heat energy based on the ocean thermal energy, and providing electric energy, cold and fresh water for users at the same time are achieved. Meanwhile, the energy and matter conversion and utilization efficiency of the system is high, the net output work is increased, and the system has very good economy and very high adaptability to a heat source.

The invention discloses a multifunctional English outdoor learning corner, comprising an upright column, wherein the top end of the upright column is provided with a rectangular frame; one side of the rectangular frame is provided with a display panel through a plurality of first cross arms; the other side of the rectangular frame is provided with a support plate; the upper end of the support plate is hinged with the upper end of a corresponding side of the rectangular frame; the lower part of the support plate is connected with the lower part of the rectangular frame through a telescoping mechanism; the outer side of the support plate is provided with a solar power generation module through a second cross arm; the first cross arms and the second cross arm adopt piezoelectric cantilever beams; a haze treatment mechanism is arranged in the rectangular frame; the ground in front of the display panel is provided with an underground power generation mechanism; and a canopy is arranged in front of the display panel. The English learning corner disclosed by the invention can display and produce sounds of English required to be learned, guides students to perform reciting and reading training outdoors, converts human body gravitational potential energy, wind energy and solar energy for use by equipment, has a built-in haze treatment function, and can purify air in a campus.

The invention discloses a college English outdoor learning system which comprises a vertical column whose top end is provided with a rectangular frame. One side of the rectangular frame is provided with a display panel through a plurality of first cross arms, and the other side of the rectangular frame is provided with a support plate. The upper end of the support plate is hinged to the upper end of one side corresponding to the rectangular frame. The lower part of the support plate is connected to the lower part of the rectangular frame. The outer side of the support plate is provided with a solar generation module through second cross arms. Piezoelectric cantilever beams are used by the first cross arms and the second cross arms. The rectangular frame is internally provided with a haze processing mechanism. A ground in front of the display panel is provided with an underground power generation mechanism. A canopy is arranged in front of the display panel. According to the English corner of the invention, English which needs to be learned can be displayed and sounded, students are guided to carry out recitation and reading training, gravitational potential energy of a human body, wind energy and solar energy are converted to be used by equipment, the system has a haze processing function, and the air in a campus can be purified.

The invention relates to a control circuit for real-time supply of motor braking energy to a DC load, including a motor main control circuit, a braking energy DC / DC dispatching circuit, specifically including a rectifier module PR1, a power module PM1, an AC / DC module PW1, a DC / DC DC module PW2, freewheeling diode D1, upper strobe diode D2, lower strobe diode D3, motor controller CU1, DC load DL1, motor M1, encoder PG1, brake tube VT1, rectifier inductor L1, buffer inductor L2, Rectifier capacitor C1, detection capacitor C2, buffer capacitor C3, output capacitor C4, upper voltage divider resistor R1, lower voltage divider resistor R2, etc. The invention automatically converts the braking energy of the motor to such DC loads after DC / DC conversion. The braking energy of the motor in the invention has high conversion and utilization efficiency, good energy saving effect, low cost, convenient application and high reliability. .