212results about How to "Guaranteed energy consumption" patented technology

The invention discloses a fuel cell cold start anode purging device and a purging method, which solve the problem of hydrogen waste in fuel cell purging in the prior art, and have the beneficial effect of ensuring stable output of fuel cell stack performance. The fuel cell cold start anode purging device comprises a nitrogen purging system and a pressure release valve. The nitrogen purging systemcomprises a nitrogen container, wherein the nitrogen container can be connected with a fuel cell stack inlet; a fuel cell stack outlet can be connected to an inlet of a three-way valve, and an outletof the three-way valve is communicated with a gas-liquid separator and a liquid storage tank; the gas-liquid separator is connected with an ejector or a circulating pump; the pressure release valve isarranged in a gas circulation system; a pressure release valve inlet can be connected with the fuel cell stack inlet; and a fuel cell stack outlet is communicated with the external environment through a liquid storage tank.

The invention relates to a pace-making electrocardio-signal non-equilibrium deep compression method which comprises the steps of conducting rapid content sensing of pace-making electrocardio signals, and conducting non-equilibrium synergy data compression and reconstitution on representation waveforms and non-representation waveforms. According to the pace-making electrocardio-signal non-equilibrium deep compression method, in order to solve the problems that pace-making pulses and other electrocardio waveform frequencies are large in distributional difference and the weight difference exists in the representation waveforms and the non-representation waveforms in clinical diagnosis, different compression and reconstitution strategies can be used for the representation waveforms and the non-representation waveforms in a targeted mode on the premise that requirements of the Nyquist sampling theory are not met. According to the pace-making electrocardio-signal non-equilibrium deep compression method, 1/2 of the inherent frequency of pace-making pulse signals is used for sampling, compressed sensing and Huffman encoding processing are carried out on the representation waveforms in the same time window, and non-distortion sampling and Huffman encoding are carried out on the non-representation waveforms in the same time window. On the premise that non-distortion of the clinical diagnosis message is guaranteed, the compression ratio and the reconstitution accuracy of data are improved, and the reliable operation of a wireless monitoring terminal of a pacemaker is guaranteed.

The invention relates to a joint for building structures, relates to a self-centering buckling-restrained brace beam-column joint and aims to solve the problem that structural application functions of an existing self-centering buckling-restrained brace in a diagonal placement scheme may be influenced and the problem that existing steel-frame beam-column joints are mostly connected rigidly or semi-rigidly, the joint of such structure easily suffers brittle failure, and after an earthquake, dangers still exist and continual application is unavailable even after the building does not collapse. Gaps are provided among columns and beams, a plurality of column stiffening ribs are distributed on the columns, the beam stiffening ribs are distributed on the beams, two connecting plates are disposed on upper and lower flanges of one beam; each connecting plate is L shaped and is provided with a plurality of bolt holes; a vertical segment of each connecting plate is connected with a column plug through bolts; each bolt penetrate a corresponding bolt hole so as to connect the connecting plates and the girder; a self-centering buckling-restrained supporting member is correspondingly disposed on the outer side of each connecting board.

The invention discloses a track and resource optimization method in an unmanned aerial vehicle auxiliary sensor network, and belongs to the field of unmanned aerial vehicle communication. Firstly, anunmanned aerial vehicle auxiliary sensor network scene is constructed, energy collection models of an unmanned aerial vehicle and a sensor are established in each time slot, and the receiving signal-to-noise ratio and the communication interruption probability of the unmanned aerial vehicle and a base station in the time slot i are calculated under the condition that the total emission energy consumption of the unmanned aerial vehicle and the sensor is met. Summing and averaging all interruption probabilities corresponding to the N time slots, and calculating an optimization target model whenthe average interruption probability is minimum and each satisfied constraint condition; and finally, optimizing the optimization target model under the condition of meeting the constraint to obtain acorresponding unmanned aerial vehicle trajectory, time slot allocation and power allocation, and realizing allocation of an optimization scheme by the unmanned aerial vehicle auxiliary sensor networkscene according to the optimized unmanned aerial vehicle trajectory, time slot allocation and power allocation. According to the invention, sustainable energy supply is provided for the unmanned aerial vehicle and the sensor, and the average outage probability is reduced.

The invention discloses a shear-type stiffened metal damper, which comprises an energy-dissipating steel plate, stiffening ribs are respectively arranged on the left and right sides of the energy-dissipating steel plate, horizontal connecting steel plates are respectively arranged on the upper end and the lower end of the energy-dissipating steel plate, Flange plates are arranged at the front end and rear end respectively, the stiffeners on the left side and the right side of the energy dissipation steel plate are arranged symmetrically or asymmetrically, and the stiffeners on the same side of the energy dissipation steel plate are arranged without crossing. The invention utilizes the advantages of relatively large initial rigidity when the steel plate is stressed in the plane, and prevents the buckling of the energy-dissipating steel plate by means of stiffening, thereby ensuring the energy-dissipating capacity and stability of the damper; There are no cross welds, and the stiffeners can be set in full length without truncating, which is convenient for welding, and the welding quality is easy to guarantee.

The invention discloses a method for producing industrial grade monoammonium phosphate through combination of wet process phosphoric acid and high-purity phosphoric acid. The method comprises the steps of performing neutralization reaction for two times on filtrate and ammonia gas or ammonia water to obtain ammonium phosphate slurry, wherein the filtrate is obtained by performing desulfurization reaction on phosphate rock powder and wet process phosphoric acid; performing concentration, crystallization and drying by using filtrate which is obtained by adjusting the pH value with high-purity phosphoric acid to obtain an industrial grade monoammonium phosphate product; removing most of impurity ions when the pH value is neutralized to 4.0-5.0 by the first neutralization reaction, then performing the second neutralization reaction to remove impurities in the wet process phosphoric acid, finely adjusting the pH value to 3.9-4.4 by using the high-purity phosphoric acid, and performing concentration and crystallization to obtain the industrial grade monoammonium phosphate. The method disclosed by the invention reduces the production cost and energy consumption and is environment-friendly and pollution-free; the obtained product is stable in quality, the process flow is short, the device construction investment is saved, the needed operators are less, the energy consumption is reduced, the pollution is reduced, and the quality of monoammonium phosphate is ensured through effective impurity removal, so that the method has a very good economic benefit.

The invention discloses a self-resetting energy dissipation system with a fabricated frame structure and a construction method of the self-resetting energy dissipation system. The self-resetting energy dissipation system includes a prefabricated column connected with a foundation, a prefabricated reinforced concrete cross beam, a prefabricated reinforced concrete beam column sub-structure and dryconnection, and further includes a self-resetting energy dissipation device arranged between interbedded prefabricated frames; and the dry connection includes friction-type high-strength bolt connection between columns and pin shaft connection between beam-beam artificial plastic hinge connecting nodes. The invention further discloses the construction method for the self-resetting energy dissipation system with the fabricated frame structure. According to the self-resetting energy dissipation system with the fabricated frame structure and the construction method of the self-resetting energy dissipation system, the shortcomings of current prefabricated structural systems are overcome, and an anti-seismic target of 'strong column and weak beam, strong node and weak component' is realized; through reasonable arrangement of the self-resetting energy dissipation device, the energy dissipation capacity of the structural system is enhanced, residual deformation of the structure is effectivelyreduced or avoided, and the allimportant social value and economic significance for effectively mitigating earthquake disasters in high-intensity areas are achieved; and meanwhile, the construction process is simplified, the construction quality is guaranteed, practicality is high, and use and promotion are convenient.

The invention discloses a process for refining isatis root extracted liquid by applying membrane separation technique. The isatis root extracted liquid is obtained by extracting isatis root by water. The process includes centrifugating the isatis root extracted liquid, taking centrifugal clear liquid, ultrafiltrating the centrifugal clear liquid, obtaining penetrating liquid, nanofiltrating the penetrating liquid, then the residual being isatis root extract. By adopting ultrafiltration membrane to effectively filtering the isatis root extracted liquid and concentrating the isatis root liquid by concentration technique, the isatis root extract is produced. The process realizes alcohol-free production, shortens production period, reduces energy consumption, lowers production cost, ensures content of effective content, enhances quality of product, and ensures quality stability of product.

The invention provides a control method of an air cooling refrigerator. The control method comprises the following steps: after the air cooling refrigerator finishes defrosting and after a preset time, starting a compressor of the air cooling refrigerator, and cooling an air channel area of the air cooling refrigerator; during an operation process of the compressor, comparing temperature of the air channel area with temperature of a compartment of the air cooling refrigerator; and judging whether a refrigeration fan is started or not according to a comparison result of the temperature of the air channel area and the temperature of the compartment. According to the control method of the air cooling refrigerator provided by the embodiment of the invention, not only can small fluctuation of temperature in the compartment be ensured, but also the energy consumption of the refrigerator can be reduced. The invention also provides the air cooling refrigerator.

The invention discloses a water emulsion type plant adhesive and a preparation method thereof, belonging to the field of adhesives. The adhesive consists of styrene or methyl methacrylate, vinyl acetate, butyl methacrylate, butyl acrylate, iso-octyl acrylate, acrylic acid, crosslinking monomer, adhesion reinforcing monomer, emulsifier, initiator, tert-butyl hydroperoxide, buffer agent, pH regulator and deionized water; and through a seeded emulsion polymerization technology, the homopolymer of styrene or methyl methacrylate is synthesized firstly as seed, the pre-emulsion is dropwise added to the seed polymerization particles to synthesize a shell polymer, and finally a core-shell structure with a hard core and a soft shell is formed. After the film formation of the polymer particles, the initial adhesion is high, and the sticking of glass beads on an adhesive layer is facilitated; and moreover, the cohesion is great, thus no adhesive residue is transferred to the base fabric during the transfer of the plant particles, and the washing effect of the reflective fabric is improved.

The invention relates to a method for preparing a high-heat-conduction aluminum nitride ceramic substrate by adding a compound sintering auxiliary. A preparation method comprises the following steps of (1), confecting of aluminum nitride ceramic powder, wherein a Li2O-MgO-CaO-YF3 system is adopted for the added compound sintering auxiliary; (2), ball milling; (3), vacuum bubble removal; (4), primary tape casting; (5), hydrostatic molding; (6), rubber discharge; (7), sintering. The method has the advantages that, according to the preparation method provided by the invention, through changing the formula of a sintering auxiliary, the compound sintering auxiliary can greatly improve heat conduction efficiency; moreover, the densification of aluminum nitride ceramic is further promoted; meanwhile, after the primary tape casting, the hydrostatic molding step is added; the consistency of performance is further improved.

The invention belongs to the technical field of structure engineering and relates to a high-strength concrete composite shear wall with built-in segmented steel plates and a construction method for the same. The invention provides the high-strength concrete composite shear wall with the built-in segmented steel plates and further provides the building and construction method for the shear wall. The composite shear wall and the construction method for the same provided by the invention are characterized in that through segmented layout of the steel plate, concrete pouring and binding bar layout become convenient; a cooperative working ability of the steel plates and concrete is enhanced; bearing force is ensured; and deformability and an energy-dissipation capability of the composite shear wall can also be enhanced. In comparison with a composite shear wall covered by steel plates, the composite shear wall provided by the invention has higher resistance to high temperatures and can show better performance when a fire disaster takes place. Meanwhile, in comparison with a concrete composite shear wall with a whole steel plate, the shear wall provided by the invention has the advantages that conversion and transition among layers can be implemented through reduction of the quantity of the segmented steel plates; inter-layer rigidity transition becomes gentler; and the structure is also simpler.

The invention discloses a shape memory alloy friction composite vibration isolator which comprises an inner barrel and an outer barrel, wherein the inner barrel is connected with an upper flange, the outer barrel is connected with a lower flange, the inner barrel and the outer barrel are coaxial, and the inner barrel is connected with the outer barrel through multiple layers of austenite shape memory alloy standard wires in the axial direction. A slidable inner barrel base is arranged under the inner barrel, an axial austenite shape memory alloy spring and a plurality of sets of radial austenite shape memory alloy springs are arranged inside the slidable inner barrel base, the radial austenite shape memory alloy springs are connected with the inner barrel through a sliding friction pair, and the lower portion of the slidable inner barrel base is connected with the outer barrel through a self-adapted sliding friction pair. A slope with a small upper portion and a large lower portion is arranged on the front portion of a sliding block, and a chamfer corresponding to the slope is arranged on the outer wall of the lower portion of the inner barrel. According to the shape memory alloy friction composite vibration isolator, the austenite shape memory alloy is characterized in that deformation self-reset capacity is strong and the energy consumption of friction elements is high, the characteristics of the austenite shape memory alloy are made full use, and the purposes of multidirectional and vertical vibration control in the horizontal plane and self-reset are achieved.

The invention relates to a down-flow gas semi-coke activated pulverized coal pyrolysis system and method. The system is characterized in that a high-temperature flue gas heat exchanger is communicated with a second L-shaped valve, a first L-shaped valve, a vertical mill and an upward heating riser; the vertical mill is communicated with a dry pulverized coal surge bin; a cyclone mixer is communicated with a high-temperature semi-coke surge bin, the high-temperature flue gas heat exchanger, the dry pulverized coal surge bin and a downer reaction pipe; the downer reaction pipe is communicated with an oil-gas cyclone dust collector; the oil-gas cyclone dust collector is communicated with a semi-coke cooler and the upward heating riser; the upward heating riser is communicated with a primary cyclone dust collector; the primary cyclone dust collector is communicated with a secondary cyclone dust collector; the secondary cyclone dust collector is communicated with a ternary cyclone dust collector; the ternary cyclone dust collector is communicated with the high-temperature flue gas heat exchanger; and the primary cyclone dust collector, the secondary cyclone dust collector and the ternary cyclone dust collector are communicated with the high-temperature semi-coke surge bin. The system and the method can be used for improving the yield of coal tar and reducing the consumption of energy, the dust collectors discharge materials smoothly, and subsequent fine dust removal is carried out stably.

The invention discloses an air-conditioning system and a control method thereof. The air-conditioning system comprises a controller, a frequency converter, a circulating pump, a cold water machine set, a hot water machine set and a coil pipe blower group of each user end, wherein the controller is provided with a frequency-conversion protecting device used for refrigeration; the frequency converter is used for controlling the working frequency of the circulating pump; the circulating pump, the cold water machine set, the hot water machine set and the coil pipe blower group of each user end arepositioned on a circulating water loop, the coil pipe blower groups are respectively connected and arranged on the circulating water loop in parallel, a flow rate automatic balance adjusting valve and a temperature sensor which outputs a temperature signal to the flow rate automatic balance adjusting valve are respectively arranged on the connection pipelines of the coil pipe blower groups, the temperature signal output by the temperature sensor is used for switching the maximum flow rate setting value of the flow rate automatic balance adjusting valve under a refrigeration mode and a heatingmode, the controller controls the constancy of the temperature difference of an inlet and an outlet of the cold water machine set or the hot water machine set by adjusting the working frequency of the circulating pump, and the frequency-conversion protecting device used for refrigeration is switched to a bypass under the heating mode. The invention can correspondingly adjust the frequency of thecirculating pump according to the load change of the system, save energy, lower consumption and control the flow rate in the circulating loop accurately.

The invention relates to the fields of fermentation biology and biodegradable materials, and in particular relates to a method and a system for preparing lactic acid by using a biological fermentationtechnology to produce high-yield and high-optical purity lactide. The method comprises the following steps: 1, inoculating lactic acid zymophyte (lactobacillus rhamnosus with the preservation numberof CGMCC No.19507) into a fermentation culture medium for lactic acid fermentation to obtain a lactic acid fermentation liquid, separating the lactic acid fermentation liquid to obtain an L-lactic acid raw material, and carrying out a pre-polycondensation reaction on lactic acid under a first polymerization condition to obtain a lactic acid prepolymer with a polymerization degree of less than 5 and a gas phase containing lactic acid; under a second polymerization condition, carrying out condensation polymerization on the lactic acid prepolymer in a falling-film reactor to obtain a lactic acidoligomer with a polymerization degree of 10 or below; and depolymerizing the lactic acid oligomer under the action of a catalyst to obtain a lactide-containing product. By utilizing the method and thesystem provided by the invention, the high-optical purity lactide can be obtained, and the yield is high.

The invention discloses a method for producing nano calcium carbonate by microwave drying. The method is carried out according to the following steps: (1) preparing Ca(OH)2 raw refined slurry; (2) preparing boiled calcium carbonate slurry; (3) preparing an activated calcium carbonate filter cake; (4) pelletizing; (5) carrying out microwave drying; and (6) crushing and sieving to prepare a nano calcium carbonate product. A device for producing nano calcium carbonate by microwave drying comprises a pelletizer, a feeding hopper, a conveyor belt, a transmission mechanism, a tunnel type microwave drying box, a microwave generator, a discharge hopper and a moisture removal mechanism. The method and the device are adopted to produce nano calcium carbonate, so that time of drying operation in a production process of the nano calcium carbonate can be greatly shortened, the energy consumption is lowered, the agglomeration of the nano calcium carbonate is weakened and the dispersion is improved, and thus, the quality of the nano calcium carbonate is improved; the prepared nano calcium carbonate has the advantages of small grain size, low agglomeration strength, a great specific surface area, small hardness and good dispersion; and moreover, the heating time is short, so that the whiteness of the nano calcium carbonate can be improved.

The invention discloses a beam forming design of a cloud radio transmission system with robustness. The invention discloses a beam forming design scheme for a Cloud RAN (cloud radio access network); the scheme can realize the minimum energy consumption of the whole system under the situation of detecting the error of the channel state information, and can enable the communication equipment in thesystem to satisfy respective communication demand; the scheme specifically comprises the steps: a base station satisfies the maximum energy consumption limitation of itself, and each user satisfies the signal-interference-noise ratio required in the communication process. The mutual interference among communication signals among various users of the same base station is sufficiently considered, and the signal-interference-noise ratio is used for measuring the communication quality of each user. In the application, the beam forming design can be performed on various users through an iteration algorithm under the situation that the channel state information is uncertain by only needing to set the required communication quality of the user and the maximum available transmission energy consumption of the base station.

The invention discloses a refrigerator with a sterilization purification device. The refrigerator comprises a refrigerator body with a refrigerating chamber. The sterilization purification device is arranged at the top of the refrigerating chamber and comprises a shell, a draught fan, a titanium dioxide catalyst net and an LED lamp. An air channel is formed through matching and assembling of the shell and the refrigerating chamber, an air inlet and an air output which are communicated with the refrigerating chamber are formed in an air inlet end and an air outlet end, corresponding to the air channel, of the shell respectively, the titanium dioxide catalyst net is arranged between the air inlet and the air outlet, and the draught fan and the LED lamp are arranged at the back portion and the front portion of the titanium dioxide catalyst net respectively; the wave length of the LED is 399 nm to 411 nm; the air speed of the draught fan is 0.3 m/s. The specific draught fan and the LED lamp are selected in the sterilization purification device, and the most efficient sterilization purification effect is achieved while energy consumption of the refrigerator can be effectively guaranteed; the structure is relatively simple, efficient circulation can be achieved without using an additional air channel.

The invention discloses a natural gas recovery process. The light hydrocarbon recovery rate can be improved, and energy consumption can be reduced by the natural gas recovery process. The process comprises the following steps of separating and filtering the material gas by a separator and a filter orderly, entering into a compressor to compress, air cooling, and then separating a part of water and heavy hydrocarbon through the separator; deeply dewatering through a dehydration unit until the moisture is smaller than 10ppm; filtering, pre-cooling to -10 DEG C through a heat exchanger, cooling to -35 DEG C by a refrigerator, then cooling and separating, and reheating the separated mixed hydrocarbon to normal temperature through the heat exchanger and then conveying to a mixed hydrocarbon storage tank; returning the separated gas to the heat exchanger to exchange heat; reheating the gas to the normal temperature, and then entering a CNG (compressed natural gas) to compress and store. By adopting the process, the material gas with low air pressure and unstable storage quantity can be collected; and the natural gas recovery process is high in recovery rate, low in recovery cost, simple in recovery equipment, simple and convenient to operate, and low in energy consumption.

A frostless multivariable coupled type heat pump hot blast stove system is used for providing hot air for grain drying. A first heat exchanger, a second heat exchanger and a heat pump unit composed ofa compressor, a condenser, a throttle device, an evaporator and a gas-liquid separator are arranged in the system. Through heat pipeline connection arrangement of the first heat exchanger, the secondheat exchanger and the heat pump unit, a preheating zone, a low temperature zone, a medium temperature zone and a high temperature zone which form heat gradient ascent in sequence from a fresh air inlet to a fresh air outlet are formed on an air supply pipeline. By means of the arrangement, temperature gradient ascent of fresh air and heat gradient utilization from the fresh air inlet to the fresh air outlet are achieved. By arranging a frostless solution circulation pipeline, frostless operation in winter is achieved. A solution achieving frostless operation in the frostless solution circulation pipeline flows back through self gravity. Water is precipitated from the dilute solution flowing back in the frostless solution circulation pipeline in a heat exchange mode, heat exchange heat isprovided by waste heat of the heat pump unit, and no other heat pump unit is additionally arranged.

The invention discloses a mine roadway wireless sensor routing method and a system based on multiple Sinks. According to the protocol, based on a multi-Sink structure, multiple Sinks are arranged in the center of the mine roadway, the transmitting power of each Sink is adjusted, and the network coverage rate is ensured; and in addition, a non-uniform clustering idea is used inside each Sink, selection and competition for a cluster head and calculation on a non-uniform radius are optimized, and a node near a Sink node and with high energy is preferentially selected to be the cluster head. A simulation result shows that energy consumption of Sensor nodes in the coverage range of each Sink can be ensured to be uniform, the connectivity of the Sensor nodes can be effectively improved, clustering interference is reduced, the network time delay is reduced, and the network survival time is prolonged.

The invention discloses a foam steel board shear wall structure. The foam steel board shear wall structure comprises steel beams and steel columns, wherein the steel beams and the steel columns are connected through beam column joints; foam steel boards are installed between the adjacent steel beams and the adjacent steel columns to form a shear wall steel board; the two sides of the foam steel boards are connected with the steel beams through horizontal angle iron; the two sides of the foam steel boards are connected with the steel columns through vertical angle iron; the foam steel boards and the horizontal angle steel are fastened and connected through transversely distributed vertical bolts; the horizontal angle steel and the steel beams are connected through transversely distributed parallel bolts; the foam steel boards and the vertical angle steel are connected through vertically distributed perpendicular bolts; the vertical angle steel and the steel columns are connected through vertically distributed parallel bolts. The foam steel board shear wall structure can overcome the defects of an ordinary steel board shear wall, can be prevented from buckling failure, and has the advantages of being large in lateral rigidity, good in anti-seismic property, high in ductility, full in energy consumption hysteresis hoop and the like.