81results about How to "Increase the number of groups" patented technology

The invention relates to a shoe washing machine, in particular to a profiling brush type shoe washing machine. An internal profiling brush, the external surface of which is covered by a brush bristle structure, is placed into the internal space of each shoe; an external profiling brush, the internal surface of which is covered by a brush bristle structure, is sleeved outside the shoe; and then the shoe is immerged into a water washing tank with a washing solution; with brush bristles against a sole of the shoe, sole brushes are fixed in the water washing tank; and the internal profiling brushis driven by a power device to move in a reciprocating way so that the shoe can move relative to each part of brush bristles to achieve a purpose of cleaning; and the profiling brush type shoe washing machine of the invention, which has the advantages of small volume, simple structure and high washing efficiency, can effectively reduce energy consumption in use and reduce the manufacturing cost.

The invention discloses a method and a device of testing surge current impact resistant property of a fuse and can be used for testing the surge current impact resistant property and a fusing characteristic. The technical scheme is that the device of testing the surge current impact resistant property of the fuse comprises a tested fuse, a monitoring portion, a current-limiting resistance, an electronic load and a power source. The device of testing the surge current impact resistant property of the fuse is characterized in that the monitoring portion comprises a monitoring oscilloscope and a sampling resistance. The sampling resistance is connected with the tested fuse, the current-limiting resistance, the electronic load and the power source in sequence to form a closed loop. The monitoring oscilloscope is parallel connection with two ends of the sampling resistance. The power source is a storage battery set, wherein the storage battery is connected in parallel. The electronic load is used for producing periodic surge pulses. The monitoring oscilloscope can monitor resistance variation and fusing time of the tested fuse when the sampling resistance produces corresponding current pulses.

The invention discloses a method for breeding ultrahigh-yield eurytopic wheat. The method provided by the invention comprises the following steps of: hybridizing disease-resistant wheat serving as a female parent and No.924402 wheat serving as a male parent, and obtaining destination wheat by screening, wherein the destination wheat is one of the following (a) to (f) wheat: (a) wheat, the yield, the lodging resistance and the stress tolerance of which are higher than those of No.14 Lu wheat; (b) wheat, the yield of which is higher than that of No.14 Lu wheat or No.19 Ji wheat or No.4185 Shi or No.8 Jingdong; (c) wheat, the lodging resistance of which is higher than that of No.14 Lu wheat; and (d) wheat, the stress tolerance of which is higher than that of No.14 Lu wheat or No.4185 Shi or No.4589 Han. Proved by experiments, the stable yield and the eurytopic property are enhanced by parent creation, hybridization and recombination, separate generation shuttle selection, alternate flood and drought selection and multi-point identification of set strains; and a new wheat variety is obtained.

The invention relates to a method for sensing a sectional capacitance digital vehicle oil level and a sensor. A plurality of groups of parallel plate capacitors which are arranged at equal intervals on a measuring height and have equal or approximate initial capacitance value are taken as measuring elements, wherein the height of the whole measuring elements is approximate or equal to that of an oil tank, the whole measuring elements are arranged in the oil tank, and the group number of the parallel plate capacitors soaked in an oil is also correspondingly changed when the oil level is changed; after a group of parallel plate capacitors is soaked in the oil, the capacitance value of the parallel plate capacitors becomes higher than the initial capacitance value; and a processing circuit compares the capacitance value of each group of parallel plate capacitors with the initial capacitance value to know the group number of the soaked capacitors in the measuring elements and an oil height value is obtained by multiplying the group number by a layout interval between the parallel plate capacitors so as to measure the vehicle oil level. The method has no mechanical moving component, is suitable for different oil media, solves the problem of oil level demixing, is also in favour of prolonging the service life of the sensor, and has the advantages of simple structure, low technological requirements and low price.

The invention discloses an oil cylinder of a static pressure vibration exciter, which is characterized in that the two ends of a piston are respectively fixedly connected with a piston rod, and each piston rod stretch out of an inner cavity of a cylinder barrel; the transverse section of a static-pressure bearing is in the shape of a circular ring, the outer wall of each static-pressure bearing is axially provided with annular external oil grooves at certain intervals, the inner wall of the static-pressure bearing is axially provided with annular internal oil grooves, and each annular external oil groove is correspondingly communicated with an annular external oil groove by a first through hole; an end cover is axially provided with a second through hole; the piston rods respectively correspondingly pass through a static pressure bearing, and the static pressure bearings are respectively fixedly connected with an end cover, the two ends of the cylinder barrel are respectively arrangedin a big hole of the second through hole of a corresponding end cover, and the two end covers are fixedly connected by lock bolts; and the shell of each end cover is provided with an oil inlet and a corresponding oil outlet, one of two adjacent annular external oil grooves is communicated with the corresponding oil inlet, and the other annular external oil groove is communicated with the corresponding oil outlet. The oil cylinder disclosed by the invention can resist large lateral forces, and reduce the friction between the piston and the static-pressure bearings.

The invention discloses a method for treating garden wastes by utilizing earthworms and a prepared plant culture substrate. The method comprises the steps of carrying out aerobic composting treatment and earthworm composting treatment on the garden wastes in sequence. The garden wastes are composed through utilizing the composting treatment and a composted product is formed, so that resource utilization of the garden wastes is promoted. According to the method disclosed by the invention, in a garden waste composting process, the degradation speed of the garden wastes can be improved, and the growth speed and reproduction speed of the earthworms can also be improved; a composted product obtained by the method for treating the garden wastes, provided by the invention, has balanced nutrients, high nutrient components, a reasonable structure and stable physical properties; the composted product is prepared into a flower plant culture substrate, and the survival rate and ornamental effect of flower plant cultivation can be improved.

The present application discloses a method and system for targeted delivery of game advertisements. The method includes selecting a target game that needs to be advertised, determining the game type of the target game as the first type, and establishing a game set according to the first type. The game set includes multiple A game of the first type, select one or more sample games from the game collection; query to obtain sample users in multiple sample games; retrieve multiple second-type games related to sample users, and perform classification statistics ; Obtain one or more related games from a plurality of games of the second type according to the results of classification and statistics; deliver an advertisement of the target game to users of the related games. With such a scheme, its advertisement placement is not limited to users of other games of the same type as the game to be advertised, but also uses big data mining to try to find other potential player groups who may like related games and conduct targeted advertisements. The advertisements are accurate Sex is higher.

The invention discloses a bionic flapping wing propulsion test platform and belongs to the field of bionic tests. The bionic flapping wing propulsion test platform comprises two motion modules, two air floating guide rails and an air floating guide rail bracket; the air floating guide rail bracket is used for supporting the whole test platform, and the two air floating guide rails are fixed to twoends of the air floating guide rail bracket in parallel; the two ends of the motion module are respectively and slidably connected with the two air floating guide rails, so that horizontal translation and rotation of bionic flapping wings are achieved; the two motion modules are used for achieving the flapping wing motion of an imitation ray; each motion module comprises two stepping motors for controlling horizontal translation and rotation of the clamping the flapping wings, so that independent motion of single motion module and coordinated motion of multiple motion modules are achieved; the movement of the ray can be simulated more realistically, and the moving part is supported through the air floating guide rails, so that the free movement of the test platform in the propelling direction is achieved, and the precision of a whole propelling device is improved; and when the bionic flapping wing propulsion test platform is suitable for other bionic flapping wing propulsion experiments, the experimental effect can be achieved by directly increasing the number of the motion modules.

The application relates to an air braking device, system and method for a railway wagon. The air braking device of the railway wagon comprises a main controller and a plurality of vehicle-mounted control devices. The main controller is arranged on a freight car adjacent to the locomotive; the vehicle-mounted control devices are arranged on the freight cars respectively and correspond to the freight cars in a one-to-one mode. Each vehicle-mounted control device comprises a wireless communication device and a slave controller connected with the wireless communication device. Braking and relieving actions are carried out through vehicle-mounted control equipment arranged in each freight car, so that the synchronism of train braking and relieving is improved, the longitudinal impact force between vehicles in the train is reduced, the running safety of the vehicles is ensured, and the traction tonnage of the heavy-load train and the grouping number of the vehicles are favorably improved. Nomatter whether an action signal and an air wave signal reach each freight car, the vehicles can be controlled to be braked, and hybrid marshalling with vehicles adopting traditional air braking can be achieved. And meanwhile, no equipment is arranged on the locomotive, so that the dependence on the locomotive is eliminated.

The invention belongs to the technical field of equipment for detecting batteries and particularly relates to a device for grading and detecting the voltage of mobile phone batteries. The device mainly comprises a detecting device and a sorting mechanism; the detecting device comprises a rotating detecting table, a battery turnover box, a contact mechanism and a slideway support, wherein a plurality of stations are distributed on the rotating detecting table, the battery turnover box is arranged on the rotating detecting table, the contact mechanism faces to the outer sides of the stations on the rotating detecting table, and the slideway support is used for mounting the contact mechanism; the sorting mechanism comprises a rotary disc device and unloading mechanisms, wherein the rotary disc device is arranged below the rotating detecting table, and the unloading mechanisms are uniformly distributed on the rotary disc device. The device provided by the invention is simple in structure, is convenient to operate and can be used for rapidly grading and detecting the voltages of mobile phone batteries in a certain size range.

The invention provides a novel air flue type PTC heater which comprises a square air pipe. A fan, a filter area and at least one heating area are sequentially arranged in the square air pipe from leftto right. The filter area comprises a primary filter net plate and a secondary filter net plate which are vertically arranged, the heating area comprises a first PTC porous heating plate and a secondPTC porous heating plate which are arranged in a left-right mode, the top of the first PTC porous heating plate is inclined rightwards, a gap is reserved between the top and the inner wall of the square air pipe, the bottom of the second PTC porous heating plate is inclined rightwards, and a gap is reserved between the bottom and the inner wall of the square air pipe. The novel air flue type PTCheater has the advantages that gas sequentially passes through the filter area and the heating area from left to right under the effect of the fan, the gas is filtered by the filter area before reaching the heating area, accordingly, dust and steam in gas can be effectively filtered, dust accumulation and dirt forming are avoided on the inner wall of the square air pipe and the PTC porous heatingplates in the heating area, influences of dust accumulation on heating efficiency are reduced, and the dust removal frequency and the maintenance cost are reduced.

The invention discloses a quick red bean local variety purifying and rejuvenating method and relates to the technical field of crop variety resource protection and utilization. The method comprises the steps: performing large group selection to select single plants and performing plant laboratory test and forming plant rows; identifying and comparing multiple plant rows and forming plant lines through the plant laboratory test; comparing multiple plant lines to predict yield and selecting high-yield plant systems through the plant laboratory test; performing mixed line breeding and producing qualified seeds. The method disclosed by the invention widens selected groups, can perform plant laboratory test according to red bean representations, ensures population genetic stability, reduces gene loss generation, quickly increases population quantity and increases output quantity of breeder seeds; seed propagation generations are reduced, a mixing opportunity is reduced, and a natural selection effect is reduced; meanwhile, a red bean local variety purifying and rejuvenating process is quickened, excellent variety characteristics are kept, germplasm resources with local characteristics are effectively protected, and the breeder seeds can be directly applied to large field production or the breeder seeds can be utilized to directly produce seeds.

The invention provides a main cotton carding roller supporting device of a carding machine and belongs to the technical field of non-woven machines. The carding machine comprises a pair of rack wallboards, a main cotton carding roller supported between the rack wallboards, a cotton inlet disarranging roller and a lower air flow disarranging roller. The main cotton carding roller supporting device comprises a main cotton carding roller shaft supporting bearing base lifting mechanism arranged on the tops of the rack wallboards, and a main cotton carding roller shaft supporting bearing base is fixed to the top of the main cotton carding roller shaft supporting bearing base lifting mechanism. The main cotton carding roller shaft supporting bearing base lifting mechanism is additionally arranged on the tops of the rack wallboards, and the main cotton carding roller shaft supporting bearing base is arranged at the top of the main cotton carding roller shaft supporting bearing base lifting mechanism, so that the height of the main cotton carding roller is increased, and the diameter of the main cotton carding roller is increased; meanwhile, the diameter of a work roller arranged between a pair of main cotton carding roller side protective covers and the diameter of a stripper are correspondingly increased or the number of sets of work rollers and strippers are increased, and work efficiency of the carding machine is improved.

The invention discloses cleaning fluid for book cleaning and a preparation method thereof. The cleaning fluid is prepared from the following raw materials: a surfactant, chitosan grafted keratin / polyvinyl alcohol fiber powder, polyvinylpyrrolidone, carboxymethylcellulose, sodium citrate, a defoaming agent, rosemary essential oil and distilled water. The preparation method comprises the following steps: (1) treating the distilled water to prepare pretreated distilled water; (2) mixing the polyvinylpyrrolidone, the carboxymethylcellulose, the sodium citrate and the surfactant, adding the mixtureinto the pretreated distilled water, heating and stirring to dissolve the mixture, and preparing a solution A; and (3) mixing the defoaming agent, the rosemary essential oil and the chitosan graftedkeratin / polyvinyl alcohol fiber powder, adding the mixture into the solution A, heating the solution, then stirring the solution at a high speed, and cooling the product to obtain the cleaning fluid.According to the cleaning fluid prepared by the preparation method disclosed by the invention, the preparation process is simple, and the operation is convenient; the selected raw materials are pollution-free to the environment; waste fluid obtained by cleaning is convenient to treat and can meet an environmentally-friendly discharging requirement; and furthermore, the cleaning fluid is high in cleaning capacity, high in cleaning speed and long in service life.

The invention relates to a standardized production method of Xizhen cattle, which comprises the steps of (1) selecting breed, (2) performing selective breeding, testing progeny and selecting family groups, and (3) performing cross breeding to each hybridized combination grading for one time, re-selecting and breeding the progeny and finally performing fixed crossing. The class group scale is expanded by adopting multiple ovulation and embryo transfer (MOET) modern biotechnology. The standardized production method of the Xizhen cattle has the advantages of integrating technological systems of high-quality high-efficiency industrialization production of the Xizhen cattle, remarkably improving economic benefit of beef cattle cultivation and technical content of products and powerfully promoting standardized cultivation and industrialization development of the Xizhen cattle.

The invention discloses a road and railway transportation wagon group and a marshalling method thereof, and relates to the technical field of railway wagons. The road and railway transportation wagongroup comprises at least two road and railway semitrailers, at least one joint bogie and two end bogies; each joint bogie is located between every two adjacent road and railway semitrailers and is connected with the road and railway semitrailers on the two sides of the joint bogie through wagon group coupling devices; the end bogies are located at two ends of a wagon group; one end of each end bogie is coupled with the corresponding road and railway semitrailer through an end coupling device, and the other end is coupled with a railway locomotive or a railway wagon through a coupler bufferingdevice. Through implementation of the technical scheme, the technical problems that invalid dead weight in existing road and railway transportation wagon groups is relatively heavy, vehicle end clearances are relatively large and train longitudinal force transfer is non-uniform can be solved effectively, quick marshalling coupling of the wagon group can be realized, the invalid dead weight of thewagon group can be reduced, the vehicle end clearance can be reduced, the train longitudinal force transfer can be uniform, and the wagon group performance and the transportation economical efficiencycan be improved effectively.

The invention discloses an electromagnetic transmission mechanism of an electronic jacquard machine. The electromagnetic transmission mechanism comprises a permanent magnet stator, a coil rotor assembly, a broach frame plate, a small pull rod component, a broach blade, a rack and an anti-abrasion roller, wherein the upper end of the permanent magnet stator and the rack form a revolute pair, and arevolute pair is formed between a connecting piece on the coil rotor assembly and the broach frame plate through a rolling bearing; the broach frame plate and the small pull rod component form a revolute pair through a rolling bearing; a revolute pair is formed between the small pull rod component and the broach blade through an anti-abrasion shaft sleeve; the broach blade and another mechanism assembly box of the electronic jacquard machine form a sliding pair to limit the displacement of the broach blade in the horizontal direction; and the anti-abrasion roller is installed on the connectingpiece of the coil rotor assembly on the right side, and the anti-abrasion roller and the rack form a sliding pair to limit the displacement of the coil rotor assembly on the right side in the horizontal direction. According to the invention, the transmission efficiency of the transmission mechanism of the jacquard machine is greatly improved, abrasion between parts is reduced, the energy utilization rate is increased, and meanwhile maintenance becomes easier and more convenient.

The invention discloses a two-range radiant section furnace tube used for an ethylene cracking furnace. The furnace tube is a two-range vertical furnace tube. The number of a first-range furnace tube is 2, and the number of a second-range furnace tube is 1. Two first-range furnace tubes are connected by an arced collection tube, the upper two tube orifices of which are connected to the two first-range furnace tubes respectively. The lower tube orifice of the collection tube is connected to a bent tube, the other end of which is connected to the second-range furnace tube. The two-range radiant section furnace tube provided by the invention can eliminate the additional force generated by deformation of a furnace tube bottom connecting piece to a radiation furnace tube, thus avoiding bending deformation of the radiation furnace tube, prolonging the operation cycle of a cracking furnace, and extending the service life of furnace tubes. Meanwhile, due to adoption of the arced collection tube and the bent tube, reaction materials in the tube have small flow rate fluctuation, no flow retention area appears, and the residence time of materials in the tube is reduced. The two-range radiant section furnace tube provided by the invention is in favor of hydrocarbon cracking reaction, and improves the yield of objective products.

The invention discloses a high-efficiency sodium chlorate electrolysis system. The high-efficiency sodium chlorate electrolysis system is characterized in that the system comprises electrolysis tanks (1), a reactor (2) and a buffer tank (4), and an inlet and an outlet of each electrolysis tank (1) are connected with the reactor (2) through titanium tubes independently. By the adoption of the round or oval electrolysis tanks, electrolytes in the tanks flow sufficiently, the inlet and the outlet of each electrolysis tank are connected with the reactor through the titanium tubes independently, independent natural circulation is achieved, circulation is more sufficient, and the problem that electrolysis tanks are different in electrolyte inlet amount due to the fact that a traditional sodium chlorate electrolysis system adopts one electrolyte inlet header pipe to supply electrolytes to the electrolysis tanks is solved; and the two rows of electrolysis tanks are distributed symmetrically and more compactly, and a sodium chlorate preparation production line can achieve flexible combination according to the capacity requirement.

The invention discloses a cable laying, conveying and guiding device, which comprises a plurality of groups of guiding mechanisms, wherein any group of the guide mechanisms comprises a support frame which is telescopically supported between cable walls in an abutting manner, a mounting base which can move in the length direction of the support frame and is locked, and a guide wheel assembly which is arranged above the mounting base. According to the cable laying, conveying and guiding device, the positions of the guiding wheel assemblies and the group number of the guiding mechanisms can be adjusted according to different installation positions and guiding angles, guiding and conveying of cables can be achieved without supervision of workers, and the working efficiency of cable laying is improved.

The invention belongs to the field of crop harvesting machinery, and particularly relates to a multifunctional slope-type giant rice harvester. A slope baffle is tilted backward, a plurality of groupsof rice stirring tooth devices are arranged in front of the slope baffle and arranged in parallel, transmission gears of the adjacent rice stirring tooth devices are meshed, the transmission gears ofthe two rice stirring tooth devices at the most outer sides are meshed with driving gears at the two sides of the slope baffle respectively, a rice dividing plate is arranged at the upper front of the rice stirring tooth devices, and the front end of the rice dividing plate is provided with a rice guiding slope edge; a grain collecting device comprises a rear-mounted baffle, a vibration sieve andan auger groove, a first material passage is formed between the rear-mounted baffle and a rubber-skin baffle, the vibration sieve of which the front is lower and the rear is higher is arranged undera rubber-skin supporting plate, a second material passage is formed between the front edge of the vibration sieve and the bottom face of the slope baffle, and the auger groove is arranged below the vibration sieve. The multifunctional slope-type giant rice harvester has low weight, many functions and a large harvesting width, and is conductive to protecting the health of workers.

The invention discloses a superstrong cooling device which comprises a water supply pump and a plurality of branches communicated with the water supply pump. Each branch comprises an upper branch body and a lower branch body, wherein the upper branch body is provided with an upper flow adjusting valve and upper spraying water tanks, the lower branch body is provided with a lower flow adjusting valve and lower spraying water tanks, the upper spraying water tanks are opposite to the lower spraying water tanks, the upper spraying water tanks and the lower spraying water tanks are each provided with a spraying opening, the spraying openings face a belt steel passing wire, the upper branch body is provided with an upper three-way valve, the inlet of the upper three-way valve is communicated with the upper flow adjusting valve, the first outlet of the upper three-way valve is communicated with a plurality of upper spraying water tanks, a lower branch main body is provided with a lower three-way valve, the inlet of the lower three-way valve is communicated with the lower flow adjusting valve, the first outlet of the lower three-way valve is communicated with a plurality of lower spraying water tanks, and the second outlet of the upper three-way valve and the second outlet of the lower three-way valve are communicated with a slag trough through drainage pipelines. The superstrong cooling device is more flexible to adjust and more stable in running.

The invention belongs to the technical field of equipment for detecting batteries and particularly relates to a device for grading and detecting the voltage of mobile phone batteries. The device mainly comprises a detecting device and a sorting mechanism; the detecting device comprises a rotating detecting table, a battery turnover box, a contact mechanism and a slideway support, wherein a plurality of stations are distributed on the rotating detecting table, the battery turnover box is arranged on the rotating detecting table, the contact mechanism faces to the outer sides of the stations on the rotating detecting table, and the slideway support is used for mounting the contact mechanism; the sorting mechanism comprises a rotary disc device and unloading mechanisms, wherein the rotary disc device is arranged below the rotating detecting table, and the unloading mechanisms are uniformly distributed on the rotary disc device. The device provided by the invention is simple in structure, is convenient to operate and can be used for rapidly grading and detecting the voltages of mobile phone batteries in a certain size range.

The invention discloses an electrolysis system of manganese dioxide and a production method thereof, comprising the following steps: a) selecting a surfactant with a density lower than that of manganese sulfate electrolytic solution as a foaming agent for heat preservation and covering; b) mixing and adding the surfactant into the electrolytic cell Sulfuric acid, manganese sulfate solution and selected foaming agent, make foaming agent float on the surface of manganese sulfate electrolytic solution; c) control the electric current of positive and negative electrodes in the electrolyzer to carry out ionization reaction, and release gaseous hydrogen; d) The hydrogen gas released by the ionization reaction is used as the foaming gas source of the foaming agent to form a thermal insulation layer on the surface of the electrolytic cell. The present invention uses hydrogen as a foaming gas source to form bubble coverage of the entire tank, which increases the temperature in the reaction tank, dissolves the sediment at the bottom of the tank, reduces the pressure drop at the bottom of the tank, and at the same time reduces the corrosion of equipment caused by hydrogen escape; Compared with the heat preservation device, it greatly saves the space of the electrolytic cell and effectively avoids the short circuit of the electrodes, so that it is convenient to increase the number of cathode and anode plates and optimize the electrode spacing of the electrolytic cell.

The invention discloses a method and a device of testing surge current impact resistant property of a fuse and can be used for testing the surge current impact resistant property and a fusing characteristic. The technical scheme is that the device of testing the surge current impact resistant property of the fuse comprises a tested fuse, a monitoring portion, a current-limiting resistance, an electronic load and a power source. The device of testing the surge current impact resistant property of the fuse is characterized in that the monitoring portion comprises a monitoring oscilloscope and a sampling resistance. The sampling resistance is connected with the tested fuse, the current-limiting resistance, the electronic load and the power source in sequence to form a closed loop. The monitoring oscilloscope is parallel connection with two ends of the sampling resistance. The power source is a storage battery set, wherein the storage battery is connected in parallel. The electronic load is used for producing periodic surge pulses. The monitoring oscilloscope can monitor resistance variation and fusing time of the tested fuse when the sampling resistance produces corresponding current pulses.

The invention provides a leg running purchasing method based on data analysis. The leg running purchasing method comprises the following steps: receiving a leg running purchasing task submitted by a demander; Obtaining predicted path information of a user providing a running leg procurement service; Determining a service provider matched with the leg-running purchasing task from the users providing the leg-running purchasing service according to the predicted path information; And pushing the sports leg purchasing task to the service provider. According to the method, the group number of the service providers can be remarkably increased, the time for the service providers to find the proper leg-running purchasing task can be shortened, powerful technical support is provided for improving the task order receiving rate, and therefore the increasingly-increasing leg-running purchasing requirement of a user is met.

The invention discloses a network type microcomputer relay protection experiment system and method, wherein the experiment system comprises N microcomputer relay protection devices, N simulation execution devices, a microcomputer relay protection tester, and a teacher-side computer which is provided with an experiment management program. One microcomputer relay protection device and one simulationexecution device are in bidirectional connection to form a group of experiment units for a group of experiment teams to carry out experiments, and the N groups of experiment units form a network typeexperiment system. The teacher-side computer is remotely connected with the microcomputer relay protection tester, the output end of the microcomputer relay protection tester is connected with the microcomputer relay protection device in each group of experiment units, and the microcomputer relay protection device in each group of experiment units is also connected with the teacher-side computer;the experiment system comprises N groups of same experiment units for N experiment teams to simultaneously carry out experiments on the same experiment project so as to achieve the purpose of competition of different experiment teams.

The invention discloses an efficient sodium chlorate electrolysis system. The system is characterized by comprising electrolytic baths (1), reactors (2) and a buffer groove (4), and the inlet and outlet of each electrolytic bath (1) are independently connected with the corresponding reactor (2) through a titanium tube. The electrolytic baths are in a circular or oval shape, electrolyte in the electrolytic baths sufficiently flows, the inlet and outlet of each electrolytic bath (1) are independently connected with the corresponding reactor (2) through one titanium tube, independent natural circulation is achieved, circulation is more sufficient, and the problem that liquid inlet amounts of the electrolytic baths are different due to the fact that a liquid inlet pipe is adopted in a traditional sodium chlorate electrolysis system for supplying liquid into the electrolytic baths is solved; in addition, the electrolytic baths are symmetrically arranged in two rows, arrangement is more compact, and the sodium chlorate preparation production line can be flexibly combined according to capacity requirements.

The invention provides a large windmill powerful wind power generator divided into two parts. A first part is a circular platform, the periphery of the platform is a circular rail, the upper face and the lower face of the circular rail are planes, the thickness and the width of the circular rail are related to the volume of a fan, and the periphery of the circular rail can bear a rolling wheel group on a wind-blocking box and does not influence motion of the rolling wheel group on a wind-blocking box support. A support is arranged in the center of the circular platform to bear the weight of a main machine, a cylinder is arranged in the center of the support, the cylinder is a center shaft of the power generator, and the center shaft is connected with the circular rail to constitute the platform. A second circular platform is provided with the wind-blocking box support. The wind-blocking box support can rotate on the platform and takes the cylinder on the platform as a center. A wind wheel group is provided with a plurality of fan blades, one wind power generator can comprise more than one wind wheel groups, and therefore strong power is generated.