39results about How to "Reduced operational stability" patented technology

The invention relates to a fuel cell and aims at providing a single-chamber microbial fuel cell without a metal catalyst. The cell comprises a cell shell, cathodes and an anode. Electrolyte is water which is filled in the cell shell and contains organic matters. The anode is a titanium core carbon fiber brush made by winding titanium wires and active carbon fibers; the cathodes are carbon cloths or stainless steel meshes with both sides respectively coated by diffusion layers and catalyst layers; and the diffusion layers are contacted with the air and the catalyst layers are contacted with the electrolyte. The cathodes of the invention are composed of multiple diffusion layers and catalyst layers, reduce loss of water due to evaporation and improve stability of the electrodes. One side of each cathode directly faces the air and oxygen is directly diffused to the catalytic surface of the cathode without additional air supply devices and driving force, thus greatly lowering the operation cost and improving the stability. The catalytic materials of the cathodes are active carbons featuring wide sources and low prices, without any metal catalyst, thus greatly reducing the constructive cost. The cell has the characteristics of simple structure, low cost and easy expansion.

The invention relates to preparation of electrodes of fuel cells and aims at providing an air cathode without a metal catalyst and a preparation method thereof. The air cathode comprises a carbon cloth or a stainless steel mesh as a base material. Both sides of the base material are respectively coated by diffusion layers and catalyst layers, wherein the diffusion layers are contacted with the air and the catalyst layers are contacted with electrolyte. The cathode of the invention is composed of multiple diffusion layers and catalyst layers, reduces loss of water due to evaporation and improves stability of the electrodes. One side of the cathode directly faces the air and oxygen is directly diffused to the catalytic surface of the cathode without additional air supply devices and driving force, thus greatly lowering the operation cost of the cell and improving the stability. The catalytic materials of the cathodes are active carbons featuring wide sources and low prices, without any metal catalyst, thus greatly reducing the constructive cost. The air electrode has the characteristics of simple structure, low cost and easy expansion and can be used for producing microbial fuel cells with high properties and low costs and simultaneously purify waste water.

The embodiment of the invention relates to a relay protection system and a special multi-core Soc chip architecture thereof. The special multi-core Soc chip architecture comprises a first dual-channelDDR, a second dual-channel DDR, a management processing core, a communication data processing core, a protection locking processing core, a protection logic processing core, a first secondary cache and a second secondary cache which are integrated on a chip. According to the special multi-core Soc chip architecture for the relay protection system, the four processing cores, the first dual-channelDDR, the second dual-channel DDR, the first secondary cache and the second secondary cache are integrally arranged on the chip, so that the original complex multi-chip hardware architecture is simplified; and low operation reliability and stability of the relay protection system caused by unstable connection of a multi-chip hardware structure are also avoided, and the operation reliability and stability of the relay protection system are improved. The technical problem that the operation stability and reliability of a relay protection product are influenced due to the fact that an existing relay protection multi-chip framework adopts a framework that a plurality of chips adopt a plurality of clamping plates and the multi-chip framework is complex is solved.

The invention relates to an electromagnetic shielding composite material and a preparation method thereof. The electromagnetic shielding composite material comprises a wave absorbing paper layer, a conductive layer and a resin layer, wherein the wave absorbing paper layer serves as the core layer of the electromagnetic shielding composite material, the conductive layer is connected to the surfaceof the wave absorbing paper layer, and the resin layer serves as the surface layer of the electromagnetic shielding composite material and is connected to the surface of the conductive layer; the waveabsorbing layer and the conductive layer are connected through a bonding agent layer to form a resin layer / conductive layer / bonding agent layer / wave absorbing paper layer / bonding agent layer / conductive layer / resin layer compounded structure; the wave absorbing paper layer comprises a plurality of layers of wave absorbing papers, and when the number of the layers of the wave absorbing papers is not smaller than 2, the wave absorbing papers are connected into whole by the bonding agent layer. The electromagnetic shielding composite material is in a multi-layer compounded structure, and introduces a reflection and absorption dual-shielding mechanism to achieve electromagnetic shielding as well as certain bearing functions, thereby being applicable to fields with high electromagnetic radiation intensity, wide radiation spectrum and stringent requirements secondary interference and further being higher in practicality.

The invention discloses a gasifier of an entrained-flow bed with a single nozzle. The gasifier is characterized by comprising a gasifier body, wherein a chilling conversion chamber is arranged below the gasifier body, and a washing deslagging chamber is arranged below the chilling conversion chamber. The gasifier body, the chilling conversion chamber and the washing deslagging chamber are coaxially arranged. The gasifier body is internally provided with a technical nozzle chamber. The chilling conversion chamber is internally provided with a chilling ring. The gasifier provided by the invention has the characteristics of easiness in amplified application in a large scale, stable and reliable operation, environmental friendliness, energy conservation and the like.

The invention discloses a single-end-operated subthreshold storage unit circuit, comprising two PMOS (P-channel Metal Oxide Semiconductor) transistors, namely P1 and P2, and seven NMOS (N-channel Metal Oxide Semiconductor) transistors, namely N1-N7, wherein the body ends of P1 and P2 are connected with a voltage drain-drain Vdd after being connected with the respective sources; the body ends of N1-N7 as well as the sources of N1, N2 and N7 are all grounded; the grid of N3 is connected with a row-writing control signal RWR; the grid of N4 is connected with a column-writing control signal CWR; an inverter is composed of N2 and P2; the output end of the inverter is connected with the grids of N2 and P2; the input end of the inverter is connected with the drain of P1; the grid of the N5 is connected with a reading word line RWL; the drain of N5 is connected with a reading bit line RBL; the source of N6 is connected with a writing bit line WBL; and the grid of N6 is connected with a word writing line WWL.

The invention discloses an internal combustion organization method of an opposed firing pulverized-coal fired boiler, and belongs to the technical field of boiler pulverized-coal combustion. Accordingto the method, part of fuel for combustion enters a hearth directly in a jet flow mode through a fuel jet nozzle of a lateral wall, is mixed with hot smoke generated by combustors of a front wall anda rear wall and is combusted, and the rest of the fuel enters through the combustors of the front wall and the rear wall and is combusted. The fuel is supplied from the lateral wall, so that mixing of part of the fuel and secondary air is postponed, fractional combustion of the fuel is realized, and the NOx generation amount is further reduced. Meanwhile, through combustion of the fuel near the lateral wall, uniformity of fuel horizontal distribution in a boiler combustion area can be realized, the problem of ash accumulation caused by non-uniform distribution of fly ash of a top horizontal flute inlet due to original combustion organization is relieved, and stable operation of a unit is facilitated. The internal combustion organization method of the opposed firing pulverized-coal fired boiler is simple in design, facilitates combustion organization adjustment, and is low in comprehensive operation cost.

The invention discloses a preparation method of low-rank coal-based porous carbon with low cost. The coal-based porous carbon with high porosity and graphitization degree is obtained by performing K-based compound high-temperature (900-1200 DEG C) activation treatment on a low-rank coal raw material, and on the other hand, the invention provides the application of the low-rank coal-based porous carbon to the preparation of a supercapacitor. By adopting the scheme, the following advantages that by adopting the low-rank coal raw materials with abundant reserves and low cost, the coal-based porous carbon material with higher porosity and graphitization degree can be obtained by mixing K-based compounds (K2CO3, KOH, K2FeO4 and the like) in a high proportion and carrying out high-temperature activation, cleaning and drying processes; and the coal-based porous carbon material is constructed into the supercapacitor device and shows higher specific capacitance, rate capability and operation stability, can be realized. Compared with a conventional carbon nano material, the coal-based porous carbon material is simple in preparation method and low in raw material cost, is suitable for macro preparation and is beneficial to the promotion of expansion of the application range of the supercapacitor.

The invention provides a container storage system, a warehousing system, a robot control method and a robot. The container storage system comprises an inventory area, a control server, a robot and a plurality of workstations, wherein the control server has wireless communication with the robot; an inventory bracket is placed in the inventory area and comprises at least one layer of laminate; the at least one layer of laminate divides the inventory bracket into at least two layers; at least two storage containers are placed on the inventory bracket in the depth direction; and the width direction of the storage containers on the inventory bracket is consistent with the depth direction of the laminate. The container storage system increases the storage density of the storage containers in theinventory area and lowers the energy consumption when the robot is taken out of the storage container; after the robot is charged for a single time, the total workload of the robot is increased, andthe sorting cost is reduced.

The invention discloses a catalytic cracking material pretreatment method, which comprises the following steps: filling a residual oil raw material into a solvent deasphalting device to perform deasphalting treatment; delivering the mixture of deasphalted oil and deeply drawn vacuum gas oil (VGO) to a hydrodemetallization region to perform a reaction in the presence of hydrogen and a demetallization catalyst; and finally, mixing the efflux of hydrodemetallization with one or two of the light wax oil and coker gatch, delivering the mixture to a hydrogenation treatment reaction region to perform a reaction in the presence of hydrogen and a hydrogenation treatment catalyst, wherein a liquid phase separated from the efflux of the hydrogenation treatment reactor is used as a catalytic raw material. When the method disclosed by the invention is used, different catalytic cracking raw materials can be treated stage by stage, the flexible operability and desulfuration efficiency of the device can be improved, and the cost can be reduced.

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner in a heating mode. By adoption of the control method of the air conditioner inthe heating mode, the problems of poor universality and poor user experience of an existing control method of an air conditioner are solved. The control method of the air conditioner in the heating mode comprises the steps that the outdoor environment temperature and the outdoor environment humidity are obtained; when the outdoor environment temperature is lower than or equal to a temperature threshold, the preheating time of an electric heater is calculated according to a first fitting formula; the closing speed of an expansion valve is calculated according to a second fitting formula; the advanced start time of an outdoor fan is calculated according to a third fitting formula; the frequency increase speed of a compressor is calculated according to a fourth fitting formula; the electricheater, the expansion valve and the outdoor fan are controlled to operate; and when the electric heater / expansion valve / outdoor fan meets set conditions, the frequency of the compressor is controlledto be increased at the frequency increase speed. By adoption of the control method of the air conditioner in the heating mode, the universality of the air conditioner can be improved, and the user experience is improved.

The invention provides a Marx circuit high-frequency high-voltage picosecond pulse generator with an avalanche triode series-parallel structure and application of the Marx circuit high-frequency high-voltage picosecond pulse generator. A power supply end is connected with one end of an R11 resistor and one end of an Rn1 resistor. The other end of the R11 resistor is connected with a collector of afirst avalanche triode group and one end of a C1 capacitor. A base of a first avalanche triode group is connected with a pulse signal output end. An emitter of the first avalanche triode group is grounded; the other end of the C1 capacitor is connected with the base of the second avalanche triode group. The emitter of the second avalanche triode group is connected with one end of an R12 resistor,and the other end of the R31 resistor is connected with the collector of a third avalanche triode group and one end of a Cn-1 capacitor; one end of the Rn1 resistor is connected with one end of the R31 resistor, the other end of the Rn1 resistor is connected with one end of the Cn capacitor and the collector of the nth avalanche triode group, the emitter of the nth avalanche triode group is connected with one end of the R (n-1) 2 resistor, and the other end of the R (n-1) 2 resistor is connected with the other end of the R22 resistor. The picosecond pulse generator is applied to a Marx circuit, so that the output picosecond pulse amplitude is improved.

The invention provides a membrane wing folding system which comprises two inner cross beams fixedly arranged at the top of a machine body, the two ends of each inner cross beam are connected with outer cross beams through electric folding mechanisms, wing membranes are arranged between the two inner cross beams and between the two outer cross beams, and each electric folding mechanism comprises a rotating motor, a push-pull screw, a power spiral sleeve and a rotating connecting rod. The rotating motor is connected with and drives the spiral sleeve to rotate, the spiral sleeve is arranged on the push-pull screw in a sleeving mode and is in threaded connection with the push-pull screw, the push-pull screw is arranged in the inner cross beam in a sliding mode, one end of the rotating connecting rod is rotationally connected with the end of the push-pull screw, the other end of the rotating connecting rod is rotationally connected with the outer cross beam, and the outer cross beam is rotationally connected with the inner cross beam. Before taking off and landing, the wing membrane is folded and put away, namely the effect of reducing the resistance of the wing to the dual-mode aircraft in the vertical direction when the dual-mode aircraft ascends and descends can be achieved, and then the purpose of ensuring that the dual-mode aircraft applying the membrane wing folding system has high operation stability when the dual-mode aircraft ascends and descends vertically is achieved.

An FM receiver which can be used by being switched between stereophonic and monophonic, and comprises detecting means for detecting a received signal, two routes over which a detected signal is transmitted to an output buffer, and a switching means for selecting either one of the two routes. The two routes consists of a route going through a stereophonic demodulating unit and a route bypassing the stereophonic demodulating unit; and the switching means selects either one of the two routes based on a control signal indicating the selection of either one of stereophonic and monophonic, and, when the route bypassing the stereophonic demodulating unit is selected, turns off power supply to the stereophonic demodulating unit based on the above control signal.

The invention belongs to the field of cutting tools and in particular relates to a three-edge tungsten steel forming tool. A groove is formed in the joint of a tool neck and a knife handle, and a chamfer is formed at the joint of the tool neck and a tool bit; three cutting edges are arranged on the cutting end surface of the end part of the tool bit; openings of the three cutting edges pass through the center, and the cutting edges are smooth; the chamfer is 60 degrees; the length of a cutting part is 10mm; the diameter of the tool bit is 7mm; the diameter of the front end of the tool bit is 2mm; the length of the tool bit is 5mm; the distance from the cutting end surface to the end part of the tool bit is 0.59mm; and the tool bit is made of tungsten steel. The three-edge tungsten steel forming tool is high in milling speed on a small workpiece, and according to the three-edge tungsten steel forming tool, the machined surface is smooth, and the machining precision is improved.

The invention discloses a turbine control valve quick-closing system control method based on fault critical mute time. On the basis of original triggering logic for a turbine control valve quick-closing function, judgment of power system fault types and selection of delay time are added. Turbine control valve quick-closing function triggering conditions under different faults are determined through analogue simulation of transient faults of a power system, and thus the optimum control valve quick-closing action delay time of different power generators under the active power (a per-unit value)is determined through analogue simulation of three-phase short troubles of the power system and according to fault critical mute time and power plant earth fault current disappearing time. By adoptionof the control method, fluctuation of transient abnormal power signals can be shielded, adverse effects on safe operation of a unit caused by delay during unit sudden load change can also be avoided,and safety and stability of the power system are effectively guaranteed.

The invention discloses a cooling protection system and method applicable to an activated coke drying method. The cooling protection system applicable to the activated coke drying method comprises anactivated coke adsorption reaction system, a supply device and a heat exchanger, wherein the activated coke adsorption reaction system is used for purifying an untreated gas; the supply device is usedfor providing a heat exchange gas; the activated coke adsorption reaction system is provided with a temperature sensor for detecting the temperature of an activated coke layer, a gas inlet flue for feeding the untreated gas, and a gas outlet flue for discharging a tail gas formed after the untreated gas is purified; and an oxygen content sensor for detecting the content of oxygen in a pipe is arranged at the gas outlet flue of the activated coke adsorption reaction system. The cooling protection system is safe, effective and reliable, is good in operation and is easy to operate and implement;due to gas cooling protection measures, the speed that heat is carried away by gases is increased, the amount of protection gases is reduced, normal operation of the system can be recovered as soon as possible, the operation cost can be reduced, and the idle rate of the system is reduced; and the system does not need to be stopped to inhibit combustion, a caking phenomenon can be avoided, and theworking efficiency of the system can be ensured.

The invention discloses a soot wet desulfurization craft. The water absorbent mixed liquid bursts below from cascade device on desulfurization tower, the soot goes into desulfurization tower and contacts with water absorbent conversely in multiplayer meshwork. The sulfur dioxide diverts to liquid. The air goes to the super stratum of water absorbent in the circular pool (3) to make absorbed sulfur dioxide form gesso. The water absorbent can separate the bigger gesso and assure the concentration of water absorbent and absorb ability to sulfur dioxide. The present invention has high efficiency of desulfurization, increases running stability of the system and decreases the engineer cost. The equipment cannot jam easily and fit for industry.

The invention discloses a crossed cylindrical roller guide rail for an instrument lathe, which comprises a lathe body, a cross support plate and an upper support plate. The crossed cylindrical roller guide rail is characterized in that a cylindrical roller guide rail pair is arranged between the lathe body and the cross support plate as well as between the cross support plate and the upper support plate; the cylindrical roller guide rail pair comprises two guide rails provided with V-shaped raceways; cylindrical rollers are arranged in the V-shaped raceways and are provided with retainers; and adjacent cylindrical rollers provided with the retainers are arrayed in the V-shaped raceways at an angle of 90 degrees in a crossed way. The scheme has the benefits of small cylindrical rolling friction resistance, particularly small starting friction force, favorable following performance, favorable operation stability, small elastic deformation, more effective motion bodies, little abrasion and long service life; the adjacent cylindrical rollers (alternative) are arrayed in the V-shaped raceways in the crossed way and are mutually staggered at the angle of 90 degrees; the cylindrical rollers can bear loads in each direction; the sliding clearance between the guide rails is eliminated; and the contacted area of the cylindrical rollers is large.

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner under a heating mode. The control method of the air conditioner under the heating mode aims to solve the problems that existing control methods of air conditioners have poor universality and bad user experience. In order to realize the purposes, the control method comprises thesteps that the outdoor environment temperature and the outdoor environment humidity are obtained; when the outdoor environment temperature is smaller than or equal to a temperature threshold, the preheating time of an electric heater is calculated according to a first fitting formula; the advanced starting time of an external fan is calculated according to a second fitting formula; the frequencyraising speed of a compressor at a frequency raising stage is calculated according to a third fitting formula; the electric heater and the external fan are controlled to operate; and when the startingtime of the electric heater reaches the preheating time and the operation time of the external fan reaches the advanced starting time, the compressor is controlled to conduct frequency raising according to the frequency raising speed. In this control mode, the control method of the air conditioner under the heating mode can be used for improving the universality of the air conditioner and the useexperience of users.

The invention discloses a high-recovery-rate saline wastewater membrane combination and separation process and an application thereof, and belongs to the technical field of water treatment and resource recycling. The process and the application comprise the following steps: a fiber filter is used to treat saline wastewater; then the saline wastewater is treated by an ultrafiltration membrane, and discharged water enters an ultrafiltration water tank; water in the ultrafiltration water tank is treated by a reverse osmosis membrance to obtain reverse osmosis clear water and reverse osmosis thick water, clear water is recycled, and thick water is treated by a nanofiltration membrane for further concentration; after the thick water is nano-filtered, nanofiltration clear water and nanofiltration thick water are obtained; the nanofiltration clear water enters the ultrafiltration water tank, and the nanofiltration thick water is collected and then applied to building materials or the coal washing industry. The separation process can also a physical washing and chemical cleaning unit and also selects a secondary reverse osmosis membrane assembly after primary reverse osmosis water production in order to adapt to different water quality requirements of discharged treatment water. Secondary reverse osmosis inflow water is primary reverse osmosis produced water, and secondary reverse osmosis thick water returns to the ultrafiltration water tank. The salt rejection rate is increased, and meanwhile the higher overall recovery is ensured.

The invention relates to the technical field of casting machining and finishing, in particular to a handheld folding grinding machine for machining detection of casting and forging. The handheld folding grinding machine comprises an external mounting box, a driving motor, a first grinding block and a second grinding block. The handheld folding grinding machine for machining detection of the casting and forging is composed of the outer mounting box, the driving motor, the first grinding block and the second grinding block, a lateral assembling groove internally provided with an inner mounting frame and an outer mounting frame is formed in the side wall of the outer mounting box, and the grinding blocks are mounted through the inner mounting frame and the outer mounting frame; the inner mounting frame and the outer mounting frame are folded and mounted through elastic torsional springs, so that the device can grind multiple surfaces at the same time, and the grinding efficiency is greatly improved; and the driving motor is matched with an eccentric wheel transmission mechanism to control reciprocating rotation of the inner mounting frame and the outer mounting frame, manual polishingis simulated, the grinding range is widened, and the application range is wider.

The present invention relates to an electromagnetic shielding composite material and a preparation method thereof. The electromagnetic shielding composite material includes a wave absorbing paper layer, which is the core layer of the electromagnetic shielding composite material; a conductive layer, which is connected to the surface of the wave absorbing paper layer; and a resin layer, which is the core layer of the electromagnetic shielding composite material. The surface layer is connected to the surface of the conductive layer; the absorbing paper layer and the conductive layer are connected through the adhesive layer to form a resin layer / conductive layer / adhesive layer / absorber layer / adhesive layer / conductive layer Layer / resin layer composite structure; the absorbing paper layer includes several layers of absorbing paper; when the number of layers of absorbing paper≧2, the absorbing papers are connected together by an adhesive layer. The electromagnetic shielding composite material adopts a multi-layer composite structure and introduces a double shielding mechanism of reflection and absorption. It can not only shield electromagnetically, but also has a certain bearing function. It can be used for high electromagnetic radiation intensity, wide radiation frequency band, and strict requirements for secondary interference. field, and thus more practical.

The invention discloses a turbine control valve quick-closing system control method based on fault critical mute time. On the basis of original triggering logic for a turbine control valve quick-closing function, judgment of power system fault types and selection of delay time are added. Turbine control valve quick-closing function triggering conditions under different faults are determined through analogue simulation of transient faults of a power system, and thus the optimum control valve quick-closing action delay time of different power generators under the active power (a per-unit value)is determined through analogue simulation of three-phase short troubles of the power system and according to fault critical mute time and power plant earth fault current disappearing time. By adoptionof the control method, fluctuation of transient abnormal power signals can be shielded, adverse effects on safe operation of a unit caused by delay during unit sudden load change can also be avoided,and safety and stability of the power system are effectively guaranteed.

The invention belongs to the technical field of transformers, and particularly relates to an integrated transformer and a testing method, and the integrated transformer comprises a transformer body and a transportation protection structure; the transformer body is mounted in the transportation protection structure through bolts; the transportation protection structure comprises a base and a rotating cover; rotating covers are rotationally mounted on the two sides of the top of the base, a plurality of fixing grooves are formed in the outer side of the bottom of the base, the rotating covers on the two sides are fixedly connected through bolts, and a transformer body is bolted to the middle of the base; the base is installed in a vehicle hopper of a transport vehicle through bolts, the transformer body is hoisted to the base, the rotating covers are fixed and locked through the bolts, the rotating covers on the two sides are connected and fixed through the bolts, the transformer body is shielded and wrapped, and therefore gravel and dust on the top face of the transformer body are reduced; and therefore, the cleanliness of the transformer body during installation is improved, and the installation convenience and the operation stability of the transformer body after installation are reduced.