107results about How to "Avoid running unstable" patented technology

A technology, wherein unstable operation of the ultrasonic motor is prevented, when the ultrasonic motor is driven at the lower speed out of at least two types of speeds, and life extension is attempted, is disclosed, and according to this invention, when the ultrasonic motor 3 is driven at a comparatively low-speed during normal driving, unstable operation due to driving at a comparatively low-speed can be prevented and life extension can be attempted by driving the ultrasonic motor at a comparatively high-speed every predetermined period of time.

The invention relates to a coal mine methane gas oxidation device, comprising an outer shell and a honeycomb ceramic oxidation bed, wherein a heat insulation layer is distributed on the inner wall of the outer shell; the upper and lower ends of the honeycomb ceramic oxidation bed are respectively provided with upper and lower rectifying chambers; the side parts of the upper and lower rectifying chambers are provided with ports which are respectively communicated with an intake pipe and an exhaust pipe; the intake pipe and the exhaust pipe are respectively provided with an intake reversing valve, an exhaust reversing valve, an intake pipe temperature sensor, an exhaust pipe temperature sensor, an intake pipe gas concentration sensor and an exhaust pipe gas concentration sensor; the upper and lower parts of the honeycomb ceramic oxidation bed are respectively provided with upper and lower flow homogenizers; the middle part of the honeycomb ceramic oxidation bed is provided with a starting electric heater; the upper and lower parts of the starting electric heater are provided with built-in heat exchangers at intervals; and the back of the shell is provided with an upper rectifying chamber temperature sensor in the middle of the upper rectifying chamber, a temperature sensor at the middle of the honeycomb ceramic oxidation bed and a lower rectifying chamber temperature sensor at the middle of the lower rectifying chamber which are inserted at intervals. The invention has the advantages of compact structure, convenient operation, small occupied area and low investment and operation cost.

An information display device which is structured as an electronic book with liquid crystal displays which display information stored in a storage medium. The information display device further has a first driving section which drives the liquid crystal displays and a second driving section which drives the recording medium, and while the displays are reset, the second driving section is inhibited from driving the storage medium. Also, the information display device has a speaker, and when a mode to display information on the liquid crystal displays at a high speed is selected, the speaker is inhibited from reproducing sound.

The invention belongs to the related technical field of combustion optimization, and discloses a boiler combustion optimization method and system based on air/pulverized coal and CO on-line monitoring. The method comprises the steps of acquiring the primary air/pulverized coal concentration, the primary air flow velocity and the CO concentration at multiple measurement points in a hearth in real time; respectively acquiring the corresponding relationship between the CO concentration and the boiler operation comprehensive cost, the primary air/pulverized coal concentration, the flow velocity and the secondary air air door opening degree matrix under multiple working conditions; acquiring threshold ranges of the CO concentration, the primary air/pulverized coal concentration and the flow velocity under the various working conditions and the secondary air air door opening degree optimization interval by taking the optimal boiler operation comprehensive cost as a standard; and detecting the primary air/pulverized coal concentration, the primary air flow velocity and/or the secondary air air door opening degree matrix when the CO concentration or the primary air/pulverized coal concentration or the primary air flow velocity monitored in real time is not within the corresponding threshold range. According to the method and the system, accurate adjustment of the boiler combustion sideis realized by monitoring the CO concentration of the boiler side and jointly adjusting the parameters of primary air and secondary air.

The invention relates to a magnetic levitation vertical shaft disc type coreless wind driven generator. The magnetic levitation vertical shaft disc type coreless wind driven generator comprises a blade device, a stator device and a rotor device; the blade device comprises a blade shaft and blades fixed to the top of the blade shaft, the stator device comprises an outer shell and a disk-shaped non-magnetically conductive support fixed to the inner side of the outer shell, the support is wound with a coil, the rotor device comprises a hollow magnetic levitation rotating shaft, a magnetic conductive disc fixed on the magnetic levitation rotating shaft and an annular magnetic pole fixed on the magnetic conductive disc, the lower end of the blade shaft is fixed to the upper end of the magneticlevitation rotating shaft, the lower end of the magnetic levitation rotating shaft extends into the outer shell and is rotatably connected with the outer shell, the magnetic levitation rotating shaftand the outer shell are provided with mutually matched magnetic pole pairs at positions close to each other, the magnetic pole pairs generate an upward suspension force on the magnetic levitation rotating shaft, and the coil on the support cuts the magnetic induction line of the annular magnetic pole during rotation of the rotor device to generate an induced current. The generator can be started with breeze, is low in loss, light in weight, small in vibration, low in manufacturing cost and long in service life.

The invention belongs to the field of energy conversion, provides a transcritical CO2 closed circulation system and aims at solving the problems of narrow operation range and low circulation efficiency of an existing transcritical CO2 power generation/driving unit. The system comprises a pre-compressor, a main compressor, a re-compressor, a turbine, a cooler, a low-temperature heat regenerator, ahigh-temperature heat regenerator and a heater; the pre-compressor, the main compressor, the re-compressor, the turbine, the cooler, the low-temperature heat regenerator, the high-temperature heat regenerator and the heater are connected to form a closed CO2 circulation loop; a shunting point and a mixing point are arranged on the closed CO2 circulation loop. The inlet of the re-compressor is communicated with the shunting point; the outlet of the re-compressor is communicated with the mixing point; and therefore, a shunting branch is formed; and the shunting branch is shunted out of the outlet of a first channel and converged at the outlet of a second channel. The system has high circulation efficiency. With the system adopted, the operation range of the unit is wide.

The invention discloses a wide-width image scanning system and a realization method thereof, and solves problems that existing wide-width image scanning systems are low in data processing speed and complex in structure. The wide-width image scanning system comprises an upper computer, a USB3.0 controller of which the model number is EZ-USBFX3 and is bi-directionally connected with the upper computer, a CPU and an electric erasable and programmable read-only memory which are bi-directionally connected with the USB3.0 controller, and at least two CIS analog front ends which are arranged side by side. Each CIS analog front end comprises a CIS light source drive module which is connected with the CPU, a CIS sensor which is connected with the CIS light source drive module, and an analog-to-digital converter of which the input end is connected with the output end of the CIS sensor and the output end is connected with the input end of the CPU. The wide-width image scanning system is simple in structure and convenient to realize so that the wide-width image scanning system has characteristics of being large in data processing amount and high in processing speed, and thus the wide-width image scanning system is suitable for popularization and application.

The invention discloses a three-stage integrated treatment system for organic biomass garbage and a treatment method for the organic biomass garbage. The treatment system involves a three-stage fermentation reactor, a spiral feeding and discharging device, an external circulating coil and a deodorization device. According to the system, the kitchen garbage is subjected to micro-aerobic pretreatment by integrating a micro-aerobic process, an anaerobic process and an aerobic process, so that the problem of unstable operation caused by acidification in the anaerobic process is avoided; secondly,a horizontal plug flow mode and an integrated slow stirring mode are adopted, so that the mass transfer efficiency and the heat transfer efficiency in the anaerobic process are improved; and thirdly,the materials are conveyed on line in the micro-aerobic, anaerobic and aerobic processes in a multi-stage spiral conveying mode, and the problems of poor flowability and blockage of the material floware solved. The process is high in practicability, continuous and efficient, well solves the environmental problem caused by the urban kitchen garbage, comprehensively utilizes the wastes in a recycling manner, and is suitable for environment-friendly treatment of easily biodegradable organic wastes.

The invention provides a gasification device for producing synthesis gas from a high-moisture organic material, and belongs to the field of gasification devices. The gasification device for producingsynthesis gas from a high-moisture organic material comprises: a feeding device, 1-3 pyrolysis reactors, a gasification reactor, a solid particle separator, a residual coke box, a gas purification device and a combustion device. The pyrolysis reactor is vertically arranged and the gasification reactor is horizontally arranged, so that the pyrolysis reactor and the gasification reactor are arrangedin an L shape. According to the invention, the problem of unstable system operation caused by aging and failure of the catalyst is avoided; meanwhile, latent heat and volatile matter of water vapor and sensible heat and chemical heat of pyrolytic carbon are fully utilized, so that energy consumption is reduced, economical efficiency is improved, cheap activating agents such as dolomite can be conveniently added into materials with high moisture content to serve as catalysts under the necessary condition, and an expensive reactor for containing the catalysts does not need to be specially arranged.

The invention discloses a flax bending carding mechanism, and belongs to the field of textile processing machinery equipment. A material moving mechanism is horizontally arranged on one side above a fixing supporting frame, a carding mechanism is vertically arranged on the fixing frame located on the lower side of the material moving mechanism, the material moving mechanism comprises a driving mechanism and a translation mechanism, a suction plate supporting frame is horizontally arranged on the outer side of a driving belt, a translation guiding plate is slidably arranged on a translation guiding rod in the horizontal direction, a pressing mechanism is vertically arranged at the output end of a lifting and lowering air cylinder, a primary carding conveying belt and a secondary carding conveying belt are sequentially, vertically and symmetrically arranged on the carding supporting frame in the horizontal direction, a plurality of flax carding needles are uniformly arranged on the outersides of the primary carding conveying belt and the secondary carding conveying belt respectively, and an impurity loading hopper is horizontally and fixedly arranged on the lower side of the fixingsupporting frame. The mechanism has the advantages of reasonable structural design, flax bending and fixing can be conveniently and accurately conducted, stable translation can be conducted, carding processing of flax can be stably and efficiently conducted in the translation process, and demands of flax production processing are met.

The invention relates to an SRM direct instantaneous torque control method for DC bus voltage dynamic adjustment. According to the method, a DC-DC conversion circuit is added to the front end of a traditional asymmetric half-bridge power converter; an excitation path and a demagnetization path are decoupled, and a higher demagnetization voltage can be applied, so that the winding of the switched reluctance motor is demagnetized more quickly, corresponding buck-boost adjustment is performed on the DC bus voltage of the power converter according to different operating speeds of the switched reluctance motor, and the adjustment mode has the characteristic of opening angle optimization; the commutation rule of the switched reluctance motor is improved, and a commutation conduction region executes direct instantaneous torque control to reduce torque pulsation through higher demagnetization voltage under the condition of considering the optimal turn-on angle characteristic; in the full-rotating-speed operation range of the switched reluctance motor, a control strategy is controlled through direct instantaneous torque to reduce torque pulsation, and the control strategy does not need to be switched.

The invention provides a PCB (Printed Circuit Board) automatic detector. The PCB automatic detector comprises a transmission device, a first correcting mechanism and an image acquiring device, wherein the transmission device comprises a charging position for introducing a PCB to be detected, a first correcting position for initially correcting the PCB to be detected, and a detection position for acquiring an image of the PCB to be detected; the transmission device is used for transmitting the PCB to be detected to the first correcting position and the detection position in sequence from the charging position; the first correcting mechanism is used for correcting the PCB positioned at the first correction position; the image acquiring device is used for acquiring the image of the PCB positioned at the detection position. By adopting the PCB automatic detector, the first correcting mechanism is arranged, so that the transmission accuracy is increased; the transmission device is arranged, so that the transmission stability is improved; the image acquiring device is arranged, so that the detection efficiency is increased.

The invention discloses a gypsum line laminating device with a thin film breakage-proof mechanism, and relates to the technical field of gypsum line production. The problem of low efficiency is solved. The device specifically comprises a workbench fixed to the ground through supporting legs, a passive film feeding mechanism and an active leftover material winding mechanism are arranged on the outer walls of the two symmetrical sides of the workbench correspondingly, a main moving mechanism is arranged on the outer wall of the top of the workbench, first film covering mechanisms are arranged onthe outer walls of the two symmetrical sides of the main moving mechanism correspondingly, a second film covering mechanism is arranged on the outer wall of the bottom of the main moving mechanism, the second film covering mechanism comprises two heat sealing rollers, two hobbing cutters, a first sliding block and a compaction roller, two first sliding rods are slidably connected to the inner wall of the first sliding block, a lifting base is fixed to the outer walls of the bottoms of the first sliding rods through bolts, and the two heat sealing rollers and the hobbing cutters are rotationally connected to the inner walls of the two sides of the lifting base through rotating shafts correspondingly. The sealing and cutting steps are carried out at the same time, so that the process stepsare saved, and the efficiency is improved.

The invention provides modularized disc screening equipment for municipal solid waste. The modularized disc screening equipment comprises multiple groups of modularized screening units which are detachably connected; each modularized screening unit comprises a square support, each square support is provided with adjusting bases, the adjusting bases are symmetrically arranged on the two sides, without through holes, of the corresponding square support, every two adjusting bases are provided with no more than five rollers which are detachably connected and evenly distributed, the rollers comprise driving rollers and driven rollers which are rotatably connected with the driving rollers through chains, multiple coaxial discs which are evenly distributed are detachably connected to each roller, and multiple disc bases which are evenly distributed are integrally formed on each roller. According to the modularized disc screening equipment for the municipal solid waste, devices with different sizes are selected for different using conditions, and therefore resource waste is reduced; by arranging the detachable discs, the service life of the equipment is prolonged, the structure is stable, replacement is convenient, the equipment can be used for screening of small devices, and the cost is reduced.

The invention relates to a dry dust removal system for converter primary flue gas ultra-low emission and smoke plume elimination. A converter is connected with a vaporization cooling flue, and the vaporization cooling flue is connected with an evaporation cooler; the evaporation cooler is sequentially connected with a multi-tube type anti-deflagration flame arrester, a pulse cloth bag dust remover, a smoke plume eliminating device, a fan, a switching station and a chimney through a flue gas pipeline, and the switching station is further connected with a gas cabinet; and the multi-tube type anti-deflagration flame arrester and the pulse cloth bag dust remover are connected with a pneumatic ash conveying system, the pneumatic ash conveying system is connected with a compressed nitrogen gas source, and the compressed nitrogen gas source is further connected with the evaporation cooler, the multi-tube type anti-deflagration flame arrester and the pulse cloth bag dust collector. According to the dry electric-bag combination dust removal system for converter primary flue gas ultra-low emission and smoke plume elimination, electrostatic dust removal is not adopted, so that the explosion venting problem of the electrostatic dust remover is eliminated; the design is anti-explosion, the structure is anti-condensation, and the emission of fuel smoke is guaranteed to reach standard; and water vapor in the flue gas can be eliminated, so that the corrosion to the pipeline can be reduced, and smoke plumes can be eliminated.