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30results about How to "Adaptability to change" patented technology

Commutation opportunity determination method and commutation system for three-phase unbalanced commutation

The invention relates to a commutation opportunity determination method and a commutation system for three-phase unbalanced commutation. The method comprises the steps of converting a multi-objectiveoptimization problem into a single-objective optimization model through a constraint method, solving an optimal solution set of the single-objective optimization model in combination with a genetic algorithm and a simulated annealing algorithm, determining an optimal solution in the optimal solution set, determining the optimal solution as a commutation opportunity, and determining a to-be-switched load and a switching sequence thereof based on the commutation opportunity so as to carry out switching. According to the method, multiple targets are converted into one target, the calculation efficiency is improved, the number of generated current optimal solutions is controlled by adjusting breakpoints of constraint conditions, and high objectivity is achieved. Secondly, through combination of a genetic algorithm and a simulated annealing algorithm, a global optimal solution can be rapidly and accurately obtained, safety risks caused by three-phase imbalance are effectively avoided, and the level of power grid operation planning is improved. In addition, three-phase imbalance states of transformers of different types and different capacities can be analyzed, and the application rangeis wide.
Owner:HUAZHONG UNIV OF SCI & TECH

Ipomoea pes-caprae IpLEA gene, coding protein and application thereof

The invention provides an ipomoea pes-caprae salt stress response related gene IpLEA, which has a coded amino acid sequence shown as SEQ ID NO.1, and a cDNA reading frame sequence shown as SEQ ID NO.2. The IpLEA gene coded late embryogenesis abundant protein IpLEA has correlation with the salt tolerance and drought resistance improvement of saccharomyces cerevisiae, escherichia coli and plants. By constructing the yeast, escherichia coli and plant transgenic over-expression vector of the IpLEA gene, over-expression vector of the IpLEA gene in yeast, escherichia coli and Arabidopis thaliana can be achieved, and the tolerance of yeast, escherichia coli and Arabidopis thaliana to salt stress and drought stress can be improved. The gene can be applied to genetic engineering breeding of engineering bacteria and plants directed against high salinity and drought stress, and has great application value.
Owner:SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI

Bird repelling device for tea planting

InactiveCN107691421AEasy to replaceChange adaptation effectAnimal repellantsPistonEngineering
The invention discloses a bird repelling device for tea planting. The bird repelling device comprises a base, support arms, a standing column and a bird repelling agent box and is characterized in that the standing column is welded to the upper end of the base, support plates are welded to two sides of the lower end of the standing column, a rotary shaft penetrating each support plate is movably mounted at the top end of the support plate, a wind wheel is movably mounted at the front end of each rotary shaft, wind blades are welded to each wind wheel, the support arms are welded to two sides of the upper end of the standing column, an atomizing nozzle is connected to one end of each support arm, connecting pipes are arranged inside the standing column and the support arms, a valve penetrating the lateral end face of the standing column is mounted on the lateral surface of the upper end of the standing column, the bird repelling agent box is fixed at the top end of the standing column,a piston type box cover is movably mounted at the upper end of the bird repelling agent box, a handle is mounted at the upper end of the piston type box cover, and the piston type box cover is connected with a pull rod through a lock catch. The bird repelling device with the bird repelling agent box, the atomizing nozzles and the wind blades is simple to operate, convenient to use, good in bird repelling effect and the like.
Owner:WUZHOU YAZHENG AGRI TECH CO LTD

A power grid access defense method of a magnetic circuit control type fault current limiter

The invention discloses a power gridaccess defense method of a magnetic circuit control type fault current limiter, which comprises three layers of defense including local defense, emergency defense and power grid defense; local defense: by configuring a fault current limit protection device, that protection device can ensure that after a magnetic circuit-controlled fault current limiter fail, theprotection device can isolate a fault through a bypass circuit breaker closing or a line circuit breaker tripping to remove the fault; Emergency prevention means that the line protection device and the safety and stability control device switch the operation setting value and the operation criterion according to the fault current limiter state to ensure that the control measures of the power network are not mismatched; At that same time, the fault current limit protection device sends the fault current limit state information to the D5000 system, and the grid dispatcher adjusts the grid operation mode accord to the anticipated strategy to form the grid defense, so as to ensure the safe and reliable operation of the grid after the line is cut off. The invention improves the adaptability ofthe power network control measures after the fault current limiter equipment is faulty, and further supports the actual large power network application of the magnetic circuit control type fault current limiter.
Owner:NARI TECH CO LTD +4

Micro-dynamic ash-discharging ball valve

The invention discloses a micro-dynamic ash-discharging ball valve belonging to the technical field of valves and aims to provide an ash-discharging ball valve with small opening torque, smooth ash-discharging process, good ash-cleaning effect on the surface of the ball valve and reliable seal. The technical scheme of the invention is as follows: the micro-dynamic ash-discharging ball valve comprises a valve body, a valve rod, a valve seat and a valve cover, and the ball body of the ball valve is a hemisphere; the micro-dynamic ash-discharging ball valve further comprises a hemisphere bracketand a metal bloated bag; the hemisphere bracket is fixedly connected with the valve rod; the bottom surface of the bloated bag is installed on the hemisphere bracket; the bottom surface of the hemisphere is connected with the top surface of the bloated bag to form a closed hollow cavity; the cavity of the bloated bag is communicated with a compressed air pipeline; and a double-sided stainless steel sealing ring is fixed on the valve seat and contacted with the surface of the hemisphere. According to the invention, the structure for fulfilling a seal depending on a constant pressure between the sealing ring and the ball body of the traditional ball valve is changed, and a drive torque in opening and closing processes is greatly reduced; a hard seal with an ash-scraping function has the advantages of excellent resistance to abrasion, temperature resistance and environmental protection adaptability; and multiple effects of labor-saving in transmission, smooth ash-discharging process, natural ash-cleaning effect, reliable seal, and the like are fulfilled.
Owner:HEBEI CHANGHONG VALVE CO LTD

Communication drainage control installation bracket

The invention provides a communication drainage control installation bracket, which comprises a bottom plate, wherein the bottom plate is used for a corner of a communication drainage control device; the bottom plate is riveted on the communication drainage control device; the middle of the bottom plate is independently provided with a first riveting hole and a second riveting hole; the top edge and the bottom edge of one side of the bottom plate are independently provided with a first locking clamp and a second locking clamp used for fixing and locking; one side, which is provided with the first locking clamp and the second locking clamp, of the bottom plate is provided with a movement panel which can shift; the first locking clamp and the second locking clamp are connected with the bottom plate and the movement panel; and the middle of the movement panel is provided with a first drainage installation hole and a second drainage installation hole used for installation. The communication drainage control installation bracket has the beneficial effects of low production cost, simple mechanism, convenience in operation and wide applicable range, can fix a communication drainage cable on a corresponding position, also can change a cable angle on the premise that the position is not changed and greatly changes adaptation.
Owner:TIANJIN PENGXIN TECH DEV CO LTD

Micro-dynamic ash-discharging ball valve

The invention discloses a micro-dynamic ash-discharging ball valve belonging to the technical field of valves and aims to provide an ash-discharging ball valve with small opening torque, smooth ash-discharging process, good ash-cleaning effect on the surface of the ball valve and reliable seal. The technical scheme of the invention is as follows: the micro-dynamic ash-discharging ball valve comprises a valve body, a valve rod, a valve seat and a valve cover, and the ball body of the ball valve is a hemisphere; the micro-dynamic ash-discharging ball valve further comprises a hemisphere bracketand a metal bloated bag; the hemisphere bracket is fixedly connected with the valve rod; the bottom surface of the bloated bag is installed on the hemisphere bracket; the bottom surface of the hemisphere is connected with the top surface of the bloated bag to form a closed hollow cavity; the cavity of the bloated bag is communicated with a compressed air pipeline; and a double-sided stainless steel sealing ring is fixed on the valve seat and contacted with the surface of the hemisphere. According to the invention, the structure for fulfilling a seal depending on a constant pressure between the sealing ring and the ball body of the traditional ball valve is changed, and a drive torque in opening and closing processes is greatly reduced; a hard seal with an ash-scraping function has the advantages of excellent resistance to abrasion, temperature resistance and environmental protection adaptability; and multiple effects of labor-saving in transmission, smooth ash-discharging process, natural ash-cleaning effect, reliable seal, and the like are fulfilled.
Owner:HEBEI CHANGHONG VALVE CO LTD

A grid access defense method for a magnetic circuit-controlled fault current limiter

The invention discloses a power gridaccess defense method of a magnetic circuit control type fault current limiter, which comprises three layers of defense including local defense, emergency defense and power grid defense; local defense: by configuring a fault current limit protection device, that protection device can ensure that after a magnetic circuit-controlled fault current limiter fail, theprotection device can isolate a fault through a bypass circuit breaker closing or a line circuit breaker tripping to remove the fault; Emergency prevention means that the line protection device and the safety and stability control device switch the operation setting value and the operation criterion according to the fault current limiter state to ensure that the control measures of the power network are not mismatched; At that same time, the fault current limit protection device sends the fault current limit state information to the D5000 system, and the grid dispatcher adjusts the grid operation mode accord to the anticipated strategy to form the grid defense, so as to ensure the safe and reliable operation of the grid after the line is cut off. The invention improves the adaptability ofthe power network control measures after the fault current limiter equipment is faulty, and further supports the actual large power network application of the magnetic circuit control type fault current limiter.
Owner:NARI TECH CO LTD +4

Online continuous detection method and system of water content in wellhead output liquid

The invention discloses an online continuous detection system of a water content in wellhead output liquid. The system is a real-time dynamic processing system of oil well output liquid, which comprises a signal collector sensor based on the Internet of Things and deployed at the wellhead, a high-speed data collection device and an analysis system deployed on a cloud platform, wherein the signal collector sensor realizes real-time data collection; the high-speed data collection device transmits the data collected by the signal collector sensor to the analysis system in real time; and the analysis system generates result flow in real time after receiving the data. Corresponding to the above system, the invention further provides an online continuous detection method of the water content inthe wellhead output liquid. By adopting the online continuous detection method and system disclosed by the invention, the online continuous detection of the wellhead output liquid is realized, and theproblems of poor adaptability, low detection accuracy, calibration difficulty and the like in the one-well-one-meter analysis mode of the existing water content analysis device are changed.
Owner:DAGANG OIL FIELD GRP +1

Multi-scenario application intelligent identification online pesticide application system and material conveying line

ActiveCN112931475BImprove drug receptivityTumble well to mixInsect catchers and killersProcess engineeringMechanical engineering
This application relates to a multi-scene application intelligent identification online spraying system and material conveying line, belonging to the field of green storage, transportation and production, which includes an image acquisition and analysis device, a spraying device and a spraying adjustment device. The image acquisition and analysis The device identifies the material flow parameters. The spraying device includes a spraying pipe and a nozzle installed on the spraying pipe. The spraying pipe is connected to a plurality of drug storage containers. The image acquisition and analysis device is based on the material flow parameters The spraying amount of the spraying head is adjusted, and the spraying adjustment device adjusts the horizontal and vertical positions of the spraying head relative to the material flow according to the material flow parameters. This application can pre-enter the standard spraying process parameters of different types of materials into the image acquisition and analysis device. After the image acquisition and analysis device detects the material flow parameters, the material spraying process of the corresponding variety can be selected and controlled by the spraying adjustment device. The spraying parameters of the spraying mechanism are adaptively adjusted.
Owner:常州胜杰生命科技股份有限公司

Intrinsically safe anti-explosion tension electronic fence

The invention provides an intrinsically safe anti-explosion tension electronic fence which is characterized in that a control rod is vertically installed on a base through a fixing piece, a force bearing rod is vertically installed on the base through a support, a plurality of transversely-arranged alloy wires are arranged between the control rod and the force bearing rod, one end of each alloy wire is connected with the force bearing rod and the other end of each alloy wire is connected with the control rod through a tension spring, wire clamps are arranged on the alloy wires, a middle column is arranged between the control rod and the force bearing rod and installed on the base, the alloy wires penetrate through the middle column, and a warning board is hung on the alloy wire located at the uppermost end. And a tension detector and a safety barrier circuit are arranged in the control rod. According to the invention, the safety barrier circuit is built in the product, so that additional signal isolation is avoided when the product is used, the cost input during installation is reduced, and the safety and stability of the product when the product is used in a special environment are improved.
Owner:TENGZHOU FEITIAN LASER AUTOMATION TECH
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