34results about How to "Slow ascent rate" patented technology

The invention discloses a power-following type fuel cell whole vehicle energy management and control method, and belongs to the technical field of fuel cell hybrid electrical automobiles. The power-following type fuel cell whole vehicle energy management and control method aims to solve the problem that in the case of an existing fuel cell whole vehicle energy management and control method, a power cell and a fuel cell can not be controlled to work within an optimal efficiency interval according to a power cell SOC and the power requirement of a driver, so that the service life and economicalefficiency of each cell are influenced. According to the power-following type fuel cell whole vehicle energy management and control method, the characteristics of the fuel cell and the power cell arefully utilized, the actual output power of the fuel cell is correspondingly controlled according to the whole vehicle power demand and the power cell real-time charge state so as to guarantee that both the fuel cell and power cell to work in the optimal interval, filtering and slope limiting are performed on the power of the fuel cell in different charge state intervals of the power cell, so thatin the whole working condition, multi-charge or multi-discharge of the power cell is guaranteed, the large-amplitude-value frequent fluctuation of the output power of the fuel cell is avoided, and thedurability of the fuel cell is also improved.

The invention discloses a treatment method of ethylene tar. The method consists of: fractionating ethylene tar into light fraction and heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline, coker diesel oil and coker gas oil, mixing the coker diesel oil with the ethylene tar light fraction, performing rectification/crystallization purification to obtain naphthalene, mixing the naphthalene removed oil, naphthalene after-cut oil, with the coker gasoline and the coker gas oil, taking the obtained mixture as a hydrotreating raw material, leaving the material to undergo a hydrofining reaction, separating gasoline fraction I, subjecting the obtained fraction heavier than gasoline to hydrocracking so as to obtain gasoline fraction II and a diesel oil product, and mixing the gasoline fraction II with the gasoline fraction I so as to obtain a final gasoline product. Directed at the characteristics of high content of aromatic hydrocarbon, colloid, carbon residue and asphaltene in ethylene tar, the method provided in the invention fractionates the ethylene tar into light fraction and heavy fraction, and adopts different processing processes, thus increasing the added value of ethylene tar. While generating the chemical raw material naphthalene, the method also improves the product quality of light fuel oil, and also enables the equipment to run smoothly for a long period.

The invention provides a nickel-based catalyst, a preparation method thereof and a method for catalyzing methane cracking to produce hydrogen. The catalyst includes a nickel-based composite metal oxide with a general formula shown as xX.yA.zB.(100-x-y-z)M, wherein X is Ni and /or its oxide, A is an auxiliary metal component, B is an assistant metal component, and M is a carrier. The method for catalyzing methane cracking to produce hydrogen includes: contacting methane-containing feed gas with the catalyst in a high density circulating fluidized bed reactor, and carrying out catalytic cracking reaction to obtain hydrogen containing product-gas and a deactivated catalyst, performing separation in a settler, letting the catalyst carry carbon deposit to enter a regenerator for regeneration, thus obtaining regenerated flue gas containing CO or synthetic gas, and letting the regenerated catalyst enter the reactor again. The heat generated by regeneration supplies the energy need of the whole system to realize self-heating operation. The method provided by the invention can realize large-scale continuous production of hydrogen at low price, and can effectively reduce energy consumption and save the production cost.

The invention discloses a shift register unit and a driving method thereof and a gate driving circuit, which relate to the technical field of display and aim at solving the problems that the existingshift register unit is likely to meet electric leakage increase and lose noise reduction capability in a retaining time period. The shift register unit comprises a pull-up node control module, a pull-down node control module, a capacitor module, an output module and a noise reduction adjustment module, wherein the noise reduction adjustment module is connected with a pull-down node and a first level input terminal respectively; and the noise reduction adjustment module is used for controlling to reduce the rising rate of potential of the pull-down node in a noise reduction time period in the retaining time period and controlling to reduce the falling rate of potential of the pull-down node in a non-noise reduction time period in the retaining time period. The shift register unit provided in the invention is used for providing gate driving signals.

The invention provides a training auxiliary jamming device for basketball shooting, which relates to the field of sports equipment. The invention relates to a training auxiliary jamming device for basketball shooting, the top of the mounting plate is fixedly connected with the top of the lifting lever through an inclination adjusting mechanism and the middle of the top of the mounting base and a rubber bellows hose is fixedly connected with the top of the lifting lever, the top of the rubber corrugated hose is fixedly connected with the top of the cavity inner wall, a lifting hand interferencemechanism is fixedly bonded to that middle part of the bottom of the inn wall of the cavity, a support rod is fixedly connected to the bottom of the movable sleeve B, a through groove is arranged onthe top of the mounting seat, a shrinking mechanism is installed in the inner cavity of the mounting seat, and two sides of the top of the shrinking mechanism are respectively connected with two support rods. So that the rated air in the airbag C is introduced into the airbag B and the airbag B is inflated, the inflated airbag B drives the fixed rod to be pressurized, the pressurized fixed rod isinclined, and the interference rod interfered by ascending is slightly leaned forward after ascending.

The invention discloses a dynamic biological-function leg protective tool. The dynamic biological-function leg protective tool comprises a biomechanics protective belt arranged based on the structure positions and the directions of tendon ligaments and muscles of the knee and the biomechanics characteristics in the human-body exercise process. The biomechanics protective belt comprises a cruciate ligament protective belt, a patellar tendon protective belt, a thigh muscle group protective belt and a shank muscle group protective belt; periodical changes of the elasticity modulus of the cruciate ligament protective belt and the elasticity modulus of the patellar tendon protective belt are generated based on the fabric stretching ratio caused by knee bending, and the change stages include the initial stretching low-modulus stage, the stretching suddenly-changing stage and the stretching high-modulus stage which are gradually transited along with the reduction of the knee angle. According to the dynamic biological-function leg protective tool, comfortable elastic protection is provided for the knee bending action of a sportsman, the elasticity modulus of a knee material is correspondingly and automatically adjusted according to different knee angles caused by different exercise knee bending ranges, healthy and comfortable elastic protection can be provided under the small knee angle and the high exercise amount, perspiring can be achieved through heat comfortable areas, and the protective tool can be prevented from sliding through the strengthened anti-sliding belt.

The invention relates to a transverter direct current side fault current suppression method based on additional virtual inductance coefficient, belonging to the technical field of flexible direct current power transmission. Firstly, a calculation method of influence of partially cutting a submodule after short circuit fault of a transverter outlet on an alternating current system is put forward, discharge current capacity of an IGBT device and breaking capacity of a direct current breaker are considered comprehensively, a suppression method of transverter direct current side short circuit fault current is put forward, wherein the suppression method can reduce investment proportion of the submodule after fault happens, meanwhile, a fault current suppression method of changing investment proportion of the submodule after fault through mapping the virtual inductance coefficient into a control system is also put forward, and a setting method of the virtual inductance coefficient is also provided. The method, applied to a MMC transverter, can effectively reduce rising rate of the fault current, reduce overcurrent stress of the direct current breaker which cuts off the fault device, andhas good economic efficiency and practicability in comparison with a method of performing fault current suppression through an additional current limiting device.

The invention discloses a plastic film processing peculiar smell removing device and method.The plastic film processing peculiar smell removing device comprises a box body, a mounting rod is fixedly connected to the outer wall of one side of the box body, an impurity removing box is fixedly connected to one end of the mounting rod, air inlet pipes are inserted into the outer walls of the two sides of the impurity removing box, and a purifying assembly used for filtering waste gas is arranged in the impurity removing box; a connecting pipe is inserted into the inner wall of one end of the air inlet pipe, one end of the connecting pipe extends into the box body, exhaust pipes distributed at equal intervals are inserted into the outer wall of the top of the connecting pipe, a supporting frame is fixedly connected to the outer wall of one side of the box body, and a liquid storage box is fixedly connected to the outer wall of the top of the supporting frame; and the outer wall of the top of the liquid storage tank is fixedly connected with a first pump body. In the process of purifying the waste gas by the treatment liquid, the treatment liquid and the waste gas can be fully mixed through the stirring assembly, so that the purification effect and efficiency of the device on the waste gas are improved.

The invention provides a permanent magnet synchronous motor traction system. During the application process in the rail transit field, when IGBT pulses need to be blocked and an inverter unit needs tobe powered off and enter idle running, a first three-phase contactor and a second three-phase contactor in a system reput-into-service unit are disconnected. When reput-into-service is required, thefirst three-phase contactor can be directly put into service if a permanent magnet synchronous motor is running at low speed, the reput-into-service is carried out, the second three-phase contactor does not operate, and a disconnecting state is maintained; and if the permanent magnet synchronous motor is running at a high speed, the second three-phase contactor can be directly put into service, amotor stator performs current limiting and voltage division by means of resistors serially connected with phases of the second three-phase contactor, or slow down the current rise rate by means of inductors serially connected with phases of the second three-phase contactor, and increases circuit time constant, thereby suppressing overcurrent or overvoltage faults caused by too fast rise of motor stator current and DC side bus voltage at the reput-into-service moment.

The invention discloses a device and method for treating phenylamine wastewater. The device for treating the phenylamine wastewater comprises a reactor. The reactor is provided with a water inlet pipeand a water outlet pipe. The reactor is internally provided with a bottom layer aerating pipe and a middle layer aerating pipe with an aerating device. The bottom layer aerating pipe and the middle layer aerating pipe are connected with an ozone generator. The aerating device is one or two combinations of a micropore aerating head or a nano aerating device. The reactor is internally provided withan ORP instrument and a pH instrument. The reactor is further connected with an alkali liquor adding device and an acid liquor adding device. The alkali liquor adding device, the acid liquor adding device, the ORP instrument, the pH instrument and the ozone generator are connected with a PLC automatic controller. The invention further discloses a method for treating the phenylamine wastewater byusing the device. The treating method is capable of prolonging contact time with phenylamine molecules, and improving service efficiency of ozone molecules, thereby oxidative-degrading the phenylaminewastewater, wherein effluent can reach an emission standard completely.

One or more embodiments of the invention disclose a bridgeless PFC circuit control method and device, a storage medium and an electronic device. The bridgeless PFC circuit control method comprises the following steps: acquiring a first input voltage of a first voltage input end of a PFC circuit and a second input voltage of a second voltage input end of the PFC circuit; and according to the first input voltage and the second input voltage, controlling the duty ratio of an energy storage switch device and a follow current switch device in the PFC circuit so as to reduce the rising rate of the potential of the second voltage input end before zero crossing of the alternating current input voltage. In an on state, the energy storage switch device is an inductor energy storage switch device in the PFC circuit; and in a conducting state,the follow current switch device is a switch device which enables the inductor to release energy to the load of the PFC circuit. According to the embodiment of the invention, a relatively large step voltage change rate caused by zero crossing of the input voltage can be slowed down, so that peak current generated by the PFC circuit during zero crossing of the input voltage is inhibited.

The invention provides a wastewater treatment device and a method for improving the ozone utilization rate in wastewater treatment. The wastewater treatment device comprises a reactor and a reverse circulation system, wherein the reactor comprises a reactor body, a separation net and an aeration device, and the gas inlet and the gas outlet of the reverse circulation system are both in fluid connection with the reaction cavity of the reactor. According to the wastewater treatment device and the method for increasing the ozone utilization rate in wastewater treatment, ozone bubbles are divided into small ozone bubbles, and the rising speed of the ozone bubbles in the reactor is reduced, so that the contact time of the ozone bubbles and the reaction liquid in the reactor can be prolonged so as to increase the ozone utilization rate.

The invention relates to elevator braking equipment, a braking control method and device and a storage medium. The elevator braking equipment comprises a driving module and a plurality of brakes, thedriving module is connected with each brake, under the condition that a power grid power supply loses power, the driving module drives any brake to perform braking action, the driving module drives the other brake to perform a braking action after a preset duration to complete the driving, driving times are updated, and the driving module accumulates the driving times until each brake completes the braking action. According to the elevator braking equipment, all the brakes can conduct braking respectively, the braking torque is generated in advance in the mode that the braking torque is reduced by multiple times, and after preset time is delayed, the other group of brakes generates the braking torque again to conduct superimposed braking; therefore, the rising speed of the braking torque is reduced, the deceleration of a lift car under the condition of power loss is effectively reduced, and the impact degree on passengers is reduced; and meanwhile, abrasion of a steel wire rope and traction wheel parts is weakened, and the service life is prolonged.

The invention relates to a processing method for improving the storage stability of highland barley, and belongs to the technical field of grain processing. The highland barley is treated by combining water replenishing and radio frequency heating, the treated highland barley sample is stored, the highland barley product which is moderately inactivated by lipase and relatively low in free radical strength is obtained by optimizing the target moisture content of water replenishing treatment and the temperature parameter of radio frequency treatment, and the highland barley product is good in quality and stable in storage. According to the highland barley processing method provided by the invention, the processing and storage cost of the highland barley is greatly reduced, and the nutrition and commercial value of the highland barley are improved.