625results about How to "The method is scientific and reasonable" patented technology

The invention discloses a method for coating and modifying surface of inorganic paper making fiber calcium sulfate whisker, which comprises the following steps: 1) mixing the calcium sulfate whisker with a dispersant relative to 1-10% of mass fraction of calcium sulfate whisker, dispersing the calcium sulfate whisker; filtering and drying after treating to obtain the calcium sulfate whisker with high dispersion; 2) measuring water, ethanol, ammoniacal liquor and organosilicon source with set volume ratio, placing the water, ethanol and ammoniacal liquor in a three-mouth flask, performing magnetic stirring, adding a proper amount of surfactant, uniformly mixing for standby; 3) adding the prepared calcium sulfate whisker with high dispersion in the three-mouth flask filled with a mixed solution, uniformly mixing, slowly adding the measured organosilicon source by batches; and 4) stirring and modifying the prepared mixed solution at the temperature of below than 25 DEG C, subsiding for 8-10 hours, filtering, and drying under the temperature of 95% to prepare the modified calcium sulfate whisker.

The invention discloses an energy storage configuration method for coordinating a wind electric field to participate one time frequency modulation of an electric power system, which is characterized by comprising backup proportional wind abandoning method that the wind electric field provides to the electric power system for the backup of one time frequency modulation, determination of effective backup capacity of the wind electric field, an evaluation index of wind abandoning utilization rate when the wind electric field provides one time frequency modulation backup to the electric power system, a control strategy A for coordinating the wind electric field to participate the electric power system one modulation energy storage modulation system, control strategy B for coordinating the wind electric field to participate the one time frequency modulation energy storage system of the electric power system, the energy storage system rated power capacity of the energy storage system and the determination content of the capacity of the rated energy. The invention can reduce the economic loss of the wind electric power field caused by the wind abandoning electric quantity on the premise that the same one time frequency modulation backup is provided, realizes the optimal configuration of the rated power of the energy storage system and the energy capacity, and can maximize the benefit. The invention is scientific, reasonable, good in effect and strong in adaptability.

The invention relates to a method for predicting ammonia process flue gas desulphurization efficiency based on multiple parameters. The method is characterized by comprising the following steps of: selecting four different artificial intelligent computation models and taking parameters acquired in an ammonia process desulphurization system operational process such as multiple groups of flue gas amounts, flow of a circulating pump, the flow of a concentration pump, the ammonia concentration, the concentration of absorption liquid, the liquid-gas ratio, the inlet flue gas temperature, the ammonia consumption, the density of spraying slurry, the pH value of slurry of a spraying tower and the pH value of the slurry of a pre-washing tower as input variables of the four models; respectively training each model, and establishing a non-linear function relationship between four desulphurization parameters and the desulphurization efficiency; then respectively transmitting parameters monitored in real time into the trained artificial intelligent model, and predicting the desulphurization efficiency; and taking the average value of two predicted values in the middle as a final predicted value... The method disclosed by the invention can be used for better predicting the ammonia process desulphurization efficiency and has the characteristics of higher stability and stronger prediction capability compared with single model prediction.

The invention discloses an artificial cultivation method of wild pinellia. The method includes the steps of land selection, land preparation, seed selection, seed soaking, timely seeding, field management, prevention and control of plant diseases and insect pests, harvesting, treating and the like. A self-prepared plant ash soaking solution is adopted for seed soaking, a good growing environment can be provided for pinellia tubers, plant diseases and insect pests can be reduced, and survival rate can be improved. A soil conditioner is applied during land preparation and base fertilizer applying, the soil conditioner can improve soil, break soil hardening, loosen soil, increase organic matters in the soil and promote soil microorganism activity, and can decompose animal and plant residues and trace metal elements in the soil to convert the same into nutrients of plants, serve as fertilizer, improve disease resistance of pinellia and promote quick growing of the pinellia. The artificial cultivation method is simple and easy to implement, simple and convenient in management, easy for growers to operate and implement, suitable for large-scale cultivation, high in yield and good in quality and completely meets market requirements.

The invention relates to a method for optimizing a steam distribution way of a steam turbine, which is characterized by comprising the following steps: calculating a regulating stage characteristic curve according to the structure parameter of a regulating stage; measuring steam temperatures and pressures in the front of all regulating air valves, steam pressures behind the regulating air valves and steam temperature and pressure behind the regulating stage in the prior steam distribution way of the steam turbine and calculating to obtain steam flows passing through all corresponding regulating air valves; calculating to obtain starting areas of all the regulating air valves by combining steam pressure specific values in the front and the rear of all the regulating air valves, the steam pressures and the temperatures in the front of the regulating air valves, and the steam flows passing through the regulating air valves; randomly giving an overlapping degree value between every two regulating air valves and giving the steam temperature and the pressure in the front of the two regulating air valves and respective opening degrees to calculate the steam pressures behind all the regulating air valves, the steam pressure behind the regulating stage, the steam flows of all regulating air valves and the relative inner efficiency of the regulating stage; and selecting the optimal steam distribution way of the steam turbine according to the principle that the relative inner efficiency is maximal and a relation curve between the lifting range and the flows of a regulating air valvegroup is a straight line.

The invention discloses a method for processing burley stems into expanded cut stems, which belongs to the technical field of cigarette processing. The method is implemented according to the steps in a sequence as follows: (1) washing burley stems; (2) adding materials to the burley stems for the first time; (3) keeping the burley stems added with the materials in storage; (4) baking the burley stems at high temperature; (5) moistening and cutting the stems; (6) adding the material to the cut burley stems for the second time; (7) moistening again; and (8) expanding, wherein the expanded burley stems are finished cut stems. The method has the advantages of improving the quality of the smoking smell of the burley stems, transforming too high nicotine and various nitrogen-containing compounds in the burley stems into various aroma components, processing a large number of burley stems into the usable expanded cut stems, saving resources and developing a novel usable raw tobacco materials, along with scientificity, reasonability, simple operation and remarkable technical results.

The invention provides an attribute association based load prediction system in the energy Internet environment. The system is characterized by comprising a data collection and a database management module, an electric quantity supply and demand balance real-time monitoring module, a data analysis and processing module, a data storage module and an electric quantity query module. The invention also provides an attribute association based load prediction method in the energy Internet environment, and the method includes an excavation algorithm for short-term load prediction on the basis of a graph theory. The system takes attributes influencing the load into consideration, and power utilization rules of users can be mastered in a more complete manner. The prediction method mainly aims at association factors related to load change, influential factors and chain reaction links of high association degree are found, power utilization behaviors of users and power utilization association modes of user groups are excavated, and a new solution ideal is provided for real-time load prediction method after large-scale intermittent new-energy grid connection.

The invention relates to a method for preparing a nano material, which comprises the step of: preparing a nano material precursor and a nano material. The method for preparing the nano material precursor comprises the step of: placing reacting raw materials in a supergravity filed reactor for gas-liquid reaction or liquid-liquid reaction to obtain the nano material precursor. The method for preparing the nano material comprises the step of heating and roasting the nano material precursor with a microwave field to ensure that the nano material precursor generates decomposition or recrystallization to obtain the nano material. The method for preparing the nano material precursor also comprises the step of: in a process of accelerating and enhancing the mass transfer with the supergravity filed, enabling a metal salt water solution in the reactor to be uniformly mixed with a liquid precipitator or gas precipitator in a molecule size manner for chemical reaction to obtain the nano material precursor of carbonate materials or nano oxyhydrate materials or hydrous oxide materials of the metal, wherein the prepared nano material is used as a nano metal oxide. The method has the advantagesof scientific and reasonable structure, high quality of products, energy saving, no secondary pollution and the like.

The invention relates to a coal bed methane hydrofracture method. Active water fracturing fluid is used as prepad fluid and displacing fluid, carboxymethyl guanidine gum fracturing fluid is used as sand-carrying fluid, four kinds of quartz sand different in particle size range are used as propping agents, the 100-mesh-to-70-mesh mealy sand and the 70-mesh-to-40-mesh fine sand serve as the propping agents in the prepad fluid, the 40-mesh-to-20-mesh medium sand and the 20-mesh-to-14-mesh coarse sand serve as the propping agents in the sand-carrying fluid, and the proportions of the added sand which is different in particle size and serves as the propping agents are different. The concentrations of clay stabilizers KCL in the active water fracturing fluid and the carboxymethyl guanidine gum fracturing fluid are determined according to the GR average value, represented with the API unit, of fractured objective layer section logging data. By means of the coal bed methane hydrofracture method, the coal bed methane production increasing effect is improved to a great extent, and the preparing cost of the fracturing fluid is reduced to the maximum degree while swelling is effectively prevented.

A method for evaluating the benefit of source-load complementation across time and space in consideration of the randomness of both sides of a system is characterized by comprising the following steps: constructing a typical power output feature database of different clean power sources across time and space; building a load prediction model based on a data mining technology, and predicting the load characteristics of different regions in the future by considering multiple influence factors; and building a cross-regional source-load time-space complementation characteristic evaluation system based on the statistical characteristics of big power data by considering the natural conditions of different regions, the regional differences and the external influence factors of energy structure differences. By taking into full consideration the complementation optimization configuration of renewable energy and loads in a wide area and across time and space in the global scope, the benefit of cross-national, cross-regional or cross-continental source-load time-space complementation can be evaluated from three dimensions (source-source complementation, load-load complementation and source-load complementation) based on the broad, multi-source, polymorphic and heterogeneous data differences and the statistical characteristics of big power data. The method can be widely applied to the reasonable evaluation of the benefit of source-load complementation across time and space.

The process of comprehensively utilizing plant fibrous waste includes the following steps: depurating plant fibrous waste as material, cutting, drying, burning in a charring furnace at 200-400 deg.c, recovering the plant vinegar liquid with one recovering device connected to the charring furnace, recovering tar, discharging charred plant waste, cooling and recovering and treating the plant char. The present invention has reduced air pollution, high plant vinegar liquid recovering rate, and high plant char yield. The plant char may be used as soil improving agent and fertilizer and pesticide applying assistant.

The invention discloses a middle-early grape culturing method for ensuring extremely early maturity, high quality and disaster avoidance, belonging to the technical field of fruit cultivation. The method comprises the following steps: (1) selecting a variety; (2) releasing the dormancy stage as early as possible; (3) mulching an outer sky film, a ground film and an inner sky film; (4) controlling the temperature and the humidity in a greenhouse; (5) controlling grape diseases; (6) managing flowers and fruits and bagging; (7) girdling; (8) harvesting when grapes are mature, and the like. By using the culturing method, the cold damage in early spring and typhoon damage in July and August can be avoided, fruits can be sufficiently mature before the end of June which is 15-20 days earlier as compared with a grape greenhouse culturing method and 30-45 days earlier as compared with an open field culturing method, the fruits are excellent in quality and safe to eat, and the benefit of grapes per mu can be increased by over 60%. The method can be popularized and applied in grape culturing areas, such as Jiangsu, Zhejiang, Shanghai and the like.

The invention relates to a difference adjustment coefficient setting method of a generator excitation considering all operating manners of a power grid. The method is characterized by comprising the following steps of: building a power grid load flow computing model: equating an external power grid, acquiring power grid topology and equipment parameters and determining each generator model; acquiring historical operating data containing all operating manners of the power grid; obtaining the corresponding relationship between busbar voltage of each transformer substation and the difference adjustment coefficient of the generator excitation system; proposing a scheme for setting the difference adjustment coefficient of the generator excitation system, which meets the operating requirement of power grid voltage, etc. Through adoption of the method, the difference adjustment coefficient of each generator in the power grid can be set so as to ensure that the busbar voltage of each transformer substation meets the operating requirement of the power grid in the all operating manners of the power grid. The method is scientific, reasonable, high in practicability, good in application effect, etc.

The invention relates to a wind power consumption day-ahead scheduling method considering price type demand response and CSP power station participation. The problem of serious wind abandoning causedby weak power grid adjusting capability and single power market price mechanism in the prior art is solved. According to the invention, the comprehensive cost is considered; uncertainty of wind powerprediction and price type demand response and system safety constraint are considered; a scheduling model based on the CSP power station and the price type demand response participating in the wind power consumption is constructed; according to the model, the CSP power station and the price type demand response are combined with wind power optimization scheduling, the wind power consumption capacity of the system is improved through coordinated scheduling on the two sides of the source load, reference basis is provided for power grid scheduling personnel, and the method has the advantages of being scientific, reasonable, high in applicability, good in effect and the like.

The invention discloses a high-yield planting method of broccoli. The planting method comprises the following steps of (1) treating seeds; (2) preparing a seedling culturing substrate; (3) sowing the seeds; (4) performing seedling hardening treatment; (5) performing seedling field planting; and (6) performing management after field planting. According to the planting method disclosed by the invention, factors including managing seed quality, seedling quality, seedling hardening manner, fertilizer and water after field management in the planting process of the broccoli, are reasonably collocated and optimized, and under the comprehensive action of the steps, the yield per mu of the broccoli is increased by 30% or above, the whole planting benefits are increased by 40% or above, the quality and the nutrient value of the planted broccoli are well perfected, the content of flavonoids in the broccoli is increased by 40-45%, the content of Ca and Mg Elements is increased by 50-55%, and the time to market of the broccoli is advanced by about 8 days, so that the market competitiveness is further improved.

The invention relates to a distribution network blocking theory based power grid optimized operation method. The distribution network blocking theory based power grid optimized operation method is characterized by including the steps: numbering each node and each switch in a distribution network according to practical situations of a power grid and forming an initial number scheme; putting forward a 'distribution network blocking' theory and blocking the network on the basis so as to obtain a comprehensive information database of the distribution network; generating an alternative topological scheme set; subjecting generated schemes to feasibility check; subjecting blocked equivalent networks to data preprocessing; computing comprehensive evaluation indexes to comprehensively evaluate a reconstructed scheme, putting forward technical indexes to quantify reliability and economy of specific partitions, proposing a loss reducing decision scheme aiming at a typical section on account of the distribution network in operation, and providing relevant decision bases for scheduling operation. The distribution network blocking theory based power grid optimized operation method has the advantages of scientificity, reasonability, high reliability, good economy, high practicality and the like.

A Photovoltaic cell panel ash deposition state monitoring system is characterized in that: the output end of an environmental temperature and humidity sensor is connected with the first input end of a data collector, the output end of a solar energy total radiation sensor is connected with the second input end of the data collector, and the output end of a battery pack backboard temperature sensor is connected with the third input end of the data collector; the battery pack backboard temperature sensor is embedded on the battery pack backboard of a photovoltaic cell panel array, the output end of the photovoltaic cell panel array is connected with the input end of a combiner box, and the output end of the combiner box is connected with the output end of a direct-current cabinet; the first output end of the direct-current cabinet is connected with the fourth input end of the data collector through a current sensor, the second output end of the direct-current cabinet is connected with the fifth input end of the data collector through a voltage sensor, and the output end of the data collector is connected with an industrial personal computer; and the third output end of the direct-current cabinet is connected with the input end of an inverter, the output end of the inverter is connected with the input end of a transformer, and the output end of the transformer is connected with a transmission-distribution network. The present invention provides a cleaning period optimization method.

The invention relates to a method for diagnosing a mechanical fault of a high-voltage circuit breaker, which is characterized by comprising the steps of acquiring vibration signals of the high-voltagecircuit breaker, performing time-domain segmentation processing on the vibration signals of the high-voltage circuit breaker, extracting Tsallis entropy features for the segmented signals, and diagnosing the state of the high-voltage circuit breaker by using a hierarchical hybrid classifier formed by an OCSVM (One-class Support Vector Machine) and an ELM (Extreme Learning Machine). Compared withmultiple traditional classifiers, the method can avoid a circumstance that a failure sample is mistakenly recognized as a normal state due to adoption of the hierarchical hybrid classifier, and the mechanical state recognition effect is improved. In addition, the multilevel hybrid classifier can accurately recognize the failure state of an untrained sample and discover emerging faults in electrical equipment. The method has the advantages of ability of being scientific and reasonable, high applicability, high accuracy, excellent effect and the like.

The invention relates to an optimization control method based on optimal power flow for a multi-terminal flexible direct current transmission system. The method is characterized by comprising optimization selection on an overall control strategy for converter stations in the multi-terminal flexible direct current transmission system, and specifically comprises the steps of performing multi-target power flow optimization calculation based on an NSGA2 ((Non-Dominated Sorting Genetic Algorithm 2) on a VSC-MTDC (Voltage Source Converter-Multi-Terminal Direct Current) system; unifying three control modes of the converter stations as a generalized droop control mode by using the direct current voltage and the active power of each converter station in the optimization result as reference values of the whole multi-terminal flexible direct current transmission system, and selecting a specific control mode for each converter station by using the reference values; and optimizing, by each converter station, the control mode according to the control coefficients alpha, beta and gamma sent by an alpha-beta-gamma program, thereby realizing optimization selection on the overall control strategy for the multi-terminal flexible direct current transmission system.

The invention relates to the technical field of membranes for water treatment, and relates to a preparation method for preparing a hollow fiber ceramic membrane by using relatively cheap diatomite as a raw material, adopting a phase inversion method and a dry-wet coating spinning technology combined with low-temperature sintering , used in large-scale industrial water microfiltration treatment with harsh conditions such as acid-base corrosion and high temperature. The diatomite hollow fiber ceramic membrane is formed in one step by the phase inversion method, and is formed by adding sintering aids and sintered at low temperature, which not only effectively protects the pore structure of the diatomite itself, but also obtains a ceramic membrane with good strength. The ceramic membrane has the excellent characteristics of the hollow ceramic membrane, and has the advantages of low price of raw materials, low sintering temperature, and easy realization of large-scale production.

The invention discloses an adaptive output feedback inverse control method for a piezoelectric precision position platform. An adaptive output feedback inverse control scheme based on a neural network can be achieved and is firstly designed according to nonlinear hysteresis systems. The inverse control method is characterized by including the steps: estimating states of a system by a designed high-gain state observer, and processing uncertain items in system and environment disturbance; testing on the piezoelectric precision position platform through the control scheme; adjusting the state observer and the initial conditions of adaptive laws of unknown parameters to achieve arbitrarily small L norms of following errors. The piezoelectric precision position platform is a three-level system, has system output and can be measured.

The invention relates to the field of textile fabric processing, in particular to a textile fabric processing system and a processing method. The textile fabric processing system comprises a servo motor, a fabric dust removal mechanism, a fabric guide roller, a dust removal chamber, a sliding door, tensioning pressure rollers, linkage frames, ironing rollers, a dust collection mechanism, a frame board and supporting legs. The servo motor is fixedly connected to the frame board through a motor seat and is in transmission connection with the fabric dust removal mechanism, and the fabric dust removal mechanism is rotationally and fittingly connected to the inner middle of the dust removal chamber which is fixedly connected to the frame board. By the textile fabric processing system, spreading, dust removal and ironing processing of textile fabrics can be realized, smoothness and cleanness of the textile fabrics can be improved conveniently, and product quality is further improved. The textile fabric processing method is scientific and reasonable, excellent in process and beneficial to improvement of textile fabric production and processing efficiency.

Disclosed are a dry-wet parallel air-cooling condenser washing system and a washing cycle determining method thereof. The dry-wet parallel air-cooling condenser washing system is characterized in that an air compressor is communicated with a high-pressure air storage cabinet; the high-pressure air storage cabinet is communicated with a first tee reversing valve; a desalting water tank is communicated with a high-pressure water pump through a second stop valve; the high-pressure water pump is communicated with a mobile washer through the first tee reversing valve; the mobile washer is arranged on a transversely-moving frame through a vertical track pulley; the lower end of the transversely-moving frame is arranged on a lower transverse track through a first transverse track pulley, and the upper end of the transversely-moving frame is arranged on an upper transverse track through a second transverse track pulley; the vertical track pulley is connected with a drive motor and a fixed pulley; a low-pressure cylinder of a turbine is communicated with an air-cooling condenser pipe bundle and a condensation tank through a steam exhaust distribution pipe; the condensation tank is communicated with a boiler water supply. The washing cycle determining method of the dry-wet parallel air-cooling condenser washing system is scientific and reasonable, so that the sum of the ash scale loss cost and compressed air blowing loss cost of an air-cooling condenser is minimum, and the service life of the air-cooling condenser is prolonged.

The invention relates to a method for manufacturing a front side grid line electrode of a solar battery. The technical scheme of the method is as follows: the method for manufacturing the front side grid line electrode of the solar battery is characterized in sequentially comprising the following steps of: 1. acting a rectangular tooth press mould with proper aspect ratio on the front side of the thin polymer film-coated solar battery to form into a rectangular tooth pattern corresponding to the press mould; 2. removing a polymer film at a groove and reducing a reflection coating by means of chemical corrosion; and 3. performing a selective metal chemical plating technology and an electroplating technology to manufacture the grid line electrode. With the scheme, the method overcomes the disadvantage of the prior art, provides a new scientific and reasonable method for manufacturing the front side grid line electrode of the solar battery, prevents a battery substrate from being damaged, leading the press mould to be hardly deformed, being suitable for recycle in industrialization, and reducing the cost.

The invention relates to a method for manufacturing recombined tobacco leaves through a paper-making mode. The method is characterized in that two recombined tobacco leaf substrate net portion forming devices are adopted on a paper-making portion of a paper machine, namely, one is a bottom recombined tobacco leaf substrate net portion forming device, and the other is a top recombined tobacco leaf substrate net portion forming device, wherein the top recombined tobacco leaf substrate net portion forming device is located on the top layer of the paper-making portion, the bottom recombined tobacco leaf substrate net portion forming device is located on the bottom layer of the paper-making portion, and the two recombined tobacco leaf substrate net portion forming devices are arranged oppositely; a plurality of dusting devices with dusting powder quantity independently adjusted and controlled are arranged between the two recombined tobacco leaf substrate net portion forming devices, the dusting devices are successively arranged in the lengthwise direction of the paper-making portion on the bottom layer of a paper machine, the two recombined tobacco leaf substrate net portion forming devices convey recombined tobacco leaf pulp out in a flowing mode at the same time, the two recombined tobacco leaf substrate net portion forming devices are firstly independently formed in a flowing conveying mode to respectively form a wet substrate, and after the pulp flowing conveying substrates of the two recombined tobacco leaf substrate net portion forming devices are formed, the middle dusting devices are started. The method is scientific and reasonable, operation is convenient, and the bulk, the softness and the sensory quality of the recombined tobacco leaves through the paper-making mode can be adjusted according to requirements.

The invention relates to a method for detecting Jingfang granules. The method comprises the steps of character identifying, checking and measuring content, wherein the step of identifying comprises identification of schizonepeta, radix angelicae pubescentis, ligusticum wallichii, fructus aurantii and bupleurum longiradiatum; the step of measuring content refers to a step of measuring content of ephedrine hydrochloride. Aiming at the problem that the condition that fewer raw materials are added or corresponding raw materials are not added by illegal manufacturer or a counterfeit drug bupleurum longiradiatum is mixed cannot be monitored because active ingredients of the granules cannot be correspondingly detected by a set of perfect detection method at present, a scientific, reasonable, practical and feasible component identification and content measurement method is formulated, the clinical effects of the Jingfang granules are guaranteed, quality indexes of several medicinal materials are clear, and application of various medicinal materials in the Jingfang granules is ensured, so that the curative effect of the drug is guaranteed. Moreover, the counterfeit drug bupleurum longiradiatum in radix bupleuri can be effectively detected, and a phenomenon that health of patients is endangered by two toxic ingredients, including bupleurotoxin and acetylbupleurotoxin, contained in bupleurum longiradiatum is avoided.

The invention relates to the field of mine spraying heat exchange and specifically relates to a multi-parameter mine spraying heat exchange efficiency calculation method-based spraying system. Four different artificial intelligence calculation models are selected; multiple groups of parameters of flue gas quantities, circulating pump flow quantities, concentration, liquid-gas ratios, inlet flue gas temperature, spray slurry density, post-spray temperature and the like collected in spraying heat exchange system operation processes are used as input variables of the four models. Each model is subjected to training operation, and four nonlinear function relations between spraying parameters and heat exchange efficiency are established. Parameters that are monitored in real time are respectively transmitted to the trained artificial intelligence models, and predictions on spraying efficiency are made. The average value of two predicted values positioned at the middle of results is used as a final prediction value, the number of spray headers to be opened and a spray flow quantity are determined according to implementation data calculated via a control device, and the heat exchange efficiency can be well monitored via use of the method; compared with single model prediction, the method is characterized by high stability, strong monitoring capability and the like.

The invention discloses a method for predicting medium and long term power load based on cluster analysis and the target theory, which is characterized by fully considering dependency among influencing factors and eliminating the dependency, solving the problem about decline of the forecasting accuracy caused by the dependency, correctly analyzing the degree of influence of all factors on the power load, and improving the forecasting accuracy of power load. The method has higher adaptability, and can be used for predicting indexes of characteristic of power load including annual maximum load, annual electricity consumption and the like.

The invention provides a detection device for engine oil performance of an engine, belonging to the technical field of measurement and solving the problems of single physical and chemical parameter and incapability of scientifically and rationally judging the quality of the engine oil existing in the conventional engine oil detection method. The detection device for the engine oil performance of the engine comprises a capacitive sensor for detecting capacitance of the engine oil, an infrared sensor for detecting clarity of the engine oil, a display unit for displaying a result and a processor, wherein the processor is electrically connected with all the capacitive sensor, the infrared sensor and the display unit and can be used for analyzing signals input by the capacitive sensor and the infrared sensor and transmitting an analysis and processing result to the display unit. The physical and chemical parameters such as viscosity of the engine oil, moisture, open flash point, acid value, iron content and n-pentane insoluble substance are effectively and comprehensively evaluated by the capacitive sensor and the infrared sensor of the detection device for the engine oil performance of the engine, so that the detection device has the advantages of complete detection parameters, scientific and rational method and accurate result.

The application discloses an ecological lake water restoration method with the effect of reducing nitrogen and phosphorus. The method comprises the following steps: firstly, performing biological treatment on the whole lake water area with a biological technology; secondly, performing physical cleaning on revetment and inshore water as well as bottom sludge at main lake inlets to increase the oxygen content and improve transparency of the water; thirdly, respectively planting emergent plants with high pollution absorption capability, submerged plants with high purification capability and floating plants with higher purification capability and ornamental capability on the revetment, the inshore and the main lake inlets; fourthly, performing ecological treatment on the central area of the lake water area by adopting the artificial floating island technology and constructing a new healthy ecological system to improve the quality of part of water. The method adheres to equal importance topollution control and water ecology, major pollution sources are effectively controlled and eliminated firstly, water ecological restoration is then implemented orderly, and finally, the healthy waterecological system is constructed; moreover, a continuous monitoring mechanism is established, and treatment and restoration effects are monitored.