Equipment health state assessment method and system based on equipment modeling

The invention relates to the technical field of electric signal processing, and provides an equipment health state evaluation method and system based on equipment modeling, and the method comprises the steps: obtaining historical and current-day vibration signals of passenger conveying equipment, collecting corresponding bearing information, and carrying out the time sequence slicing of the historical and current-day vibration signals; obtaining an experience fault probability of each historical time sequence slice; acquiring a first feature according to bearing information corresponding to the time sequence slice, acquiring a second feature according to the signal amplitude performance, and classifying according to the first feature and the second feature to obtain a plurality of first categories; according to the first feature and the second feature of each time sequence slice on that day, obtaining a matched first category of each time sequence slice on that day; and according to the ...

Enterprise-oriented carbon emission permit transaction compliance risk management method and device

The invention relates to an enterprise-oriented carbon emission permit transaction compliance risk management method and device. The method comprises the steps of identifying a risk index system of an enterprise carbon market; wherein the risk index system comprises a first-level risk index and a second-level risk index under the first-level risk index; evaluating a risk weight of a second-level risk index according to the risk index system, and determining a risk level of a first-level index risk according to the risk weight of the second-level risk index; and performing corresponding processing by adopting a preset risk processing mode according to the risk level. According to the method, an index system is provided, the risks are visualized and quantized, on the basis, the severity and the occurrence probability are comprehensively considered, the compliance risk of the enterprise is evaluated, the coupling relation between the risks is guaranteed, evaluation is more objective, and the ...

Method for achieving accurate burdening and continuous metering of static-state hopper scale

The invention discloses a method for achieving accurate burdening and continuous metering of a static-state hopper scale. The method comprises the following steps of real-time metering, total feed amount metering, batch metering and automatic stopping and feeding control again. The method for achieving accurate burdening and continuous metering of the static-state hopper scale has the advantages that functions of real-time metering, total feed amount metering, batch metering and automatic stopping and feeding control again and the purposes of accurate burdening and continuous metering are achieved through certain logic calculation o the basis of accurate metering of the static-state hopper scale; feeding amount of each material is set on a computer, batch feeding is performed, when the feed amount reaches a set value, feeding is stopped, and real automatic operation is achieved; in addition, the feeding accuracy is not influenced the material amount in a bin, periodic bin cleaning is not ...

Wet flue gas desulfurization method

The invention discloses a wet flue gas desulfurization method comprising the steps: obtaining absorption liquid with sulphite by using an alkaline absorbing agent which is in contact with flue gas to absorb SO2 in the flue gas in a desulfurizing tower; reacting the obtained absorption liquid containing sulphite with sulphuric acid; transmitting the SO2 precipitated by the reaction to an acid preparation system to prepare the sulphuric acid; and obtaining a solid settling matter of sulphate by soil-liquid collecting reaction. The wet flue gas desulfurization method can use sulphuric acid in waste acid to treat the absorption liquid, shortens a treating process and saves a large amount of device investment and operation cost, and the SO2 absorbed from the flue gas enters the acid preparation system again, therefore, resources can be recycled.

Method for preparing carbon nanofiber membrane

The invention provides a method for preparing a carbon nanofiber membrane, which comprises the following steps of: a) mixing tellurium nanowires and glucose in aqueous solution, and performing carbonation reaction to obtain a carbon-coated tellurium nano cable; b) adding hydrochloric acid and hydrogen peroxide into the carbon-coated tellurium nano cable, and performing oxidation reaction to obtain carbon nanofibers; and c) dispersing the carbon nanofibers in a solvent o obtain slurry, coating the slurry on a support material, and drying to obtain the carbon nanofiber membrane. The prepared carbon nanofibers are uniform in diameter, so tht the obtained carbon nanofiber membrane has narrow pore diameter distribution; by controlling synthetic conditions of the nanofibers, carbon nanofibers with different diameters can be obtained, so that the pore diameter of the carbon nanofiber membrane is controllable, and the carbon nanofiber membrane is better applied to a membrane separation technology ...

Large-scale human hematopoietic stem cell amplification method based on bionic microcarrier

According to the large-scale human hematopoietic stem cell amplification method based on the bionic microcarrier, on one hand, sufficient hematopoietic stem cells with functions can be obtained through large-scale culture, on the other hand, the dryness of the hematopoietic stem cells can be maintained for a long time, the potential of differentiation of the hematopoietic stem cells to megakaryocyte lines is enhanced, and the hematopoietic stem cells can be obtained. The method overcomes the defect that the absolute number of cells obtained through in-vitro culture in the prior art is insufficient for treatment, meanwhile, the method can be used for directly culturing the human mononuclear cells, the human mononuclear cells are directly collected and cultured, and unknown risks caused by the process of sorting the hematopoietic stem progenitor cells are avoided. The method provided by the invention gives consideration to the principles of efficiency and economy, and has wide experimental ...

Functional hematopoietic stem cells and methods of proliferation thereof

The invention provides a method for culturing human hematopoietic stem cells in vitro based on an artificial three-dimensional microcarrier. According to the method, mononuclear cells of bone marrow, umbilical cord blood and peripheral blood from different sources can be cultured; the culture method provided by the invention is simple in culture system, not only promotes the formation of short-term hematopoietic stem cell colonies and maintains the potential of the cultured cells to differentiate to multilineages, but also can promote the formation of cobblestone-like hematopoietic regions with long-period hematopoietic ability of human hematopoietic stem cells, and improves the frequency of long-term culture of initial cells (LTC-IC); the stemness of the human hematopoietic stem cells cultured in vitro through the method can be maintained for a long time, deviation of megakaryocyte lineage is promoted, amplification of megakaryocyte stem cells in absolute quantity is promoted, the amplification ...

Diesel oil and natural gas undistributed switching device for converter combustion system and control method thereof

The invention discloses a diesel oil and natural gas undistributed switching device for a converter combustion system and a control method thereof. The diesel oil and natural gas undistributed switching device for the converter combustion system comprises an option device, an ignition device, a first selector, a second selector, a first and logic gate, a second and logic gate, a third logic gate, a non logic gate, an oil valve station, an oxygen system valve station, a natural gas valve station and a combustion spray gun. The diesel oil and natural gas undistributed switching device for a converter combustion system and the control method thereof have the advantages that a two-stage and logic gate is used, one stage is ignition control, and the other stage is oil system and natural system valve control, so that no disturbance existing during switching of two sets of systems is guaranteed, and safety and reliability of the system are guaranteed; two kinds of fuels can be switched at any ...

Metro PIS system train-ground data transmission method based on Internet of Things

The invention relates to the technical field of data transmission, and provides a subway PIS system train-ground data transmission method based on the Internet of Things. The method comprises the following steps: an information processing module and video monitoring equipment acquire train set operation data information and train set monitoring video information, and upload the acquired train set information to a network transmission module for encryption to generate vehicle-mounted encrypted data information; security evaluation is carried out on the Internet of Things transmission local area network, an information transmission identity authentication instruction is generated based on a security evaluation result for verification, and after the verification is passed, the vehicle-mounted encrypted data information is transmitted to the data center control module for processing, and vehicle group service control parameter information is obtained; and bidirectionally transmitting the service ...

Fluid delivery method for preventing pipe fouling and clogging

This invention relates to a liquid transmission method to avoid pipe deposition and blocking, which adopts electromagnetic three-way direction valve to automatic switch once in a fixing circle and realize the transmission. This invention can effectively avoid the liquid deposition on the pipe wall by adopting the impulse means and ensures the system long-term stable working through its application on the sulfur removing system.

Fluid delivery method for preventing pipe fouling and clogging

This invention relates to a liquid transmission method to avoid pipe deposition and blocking, which adopts electromagnetic three-way direction valve to automatic switch once in a fixing circle and realize the transmission. This invention can effectively avoid the liquid deposition on the pipe wall by adopting the impulse means and ensures the system long-term stable working through its applicationon the sulfur removing system.

Graphitized carbon loaded platinum nanoparticles, and preparation method and application thereof

The invention provides a graphitized carbon loaded platinum nanoparticle, and a preparation method and application thereof. The graphitized carbon loaded platinum nanoparticles comprise a graphitized carbon carrier; the platinum nano particles are loaded on the graphitized carbon carrier; and carbon and sulfur independently supported on the graphitized carbon support or the platinum nanoparticles. Carbon and sulfur are introduced into the graphitized carbon carrier and/or the platinum nanoparticles, carbon atoms can form carbon packages on the surfaces of the platinum nanoparticles, it is guaranteed that the platinum nanoparticles are dispersed uniformly and are small in size, sulfur atoms can be coordinated with platinum, the platinum nanoparticles are compounded with the graphitized carbon carrier mainly through platinum-sulfur bonds, and the platinum nanoparticles can be compounded with the graphitized carbon carrier mainly through platinum-sulfur bonds. The problem of low loading rate ...

Basic load calculation method and system for power system

The invention discloses a basic load calculation method for a power system. The method comprises the following steps: constructing a basic load influence factor; basic load influence factor historical data and power load basic data are collected and processed to obtain a training data set and a test data set; a generalized addition load analysis model is constructed and trained; testing the trained model by adopting a test data set to obtain a final generalized addition load analysis model; and calculating the basic load of the target power system according to the final generalized addition load analysis model. The invention also discloses a system for realizing the basic load calculation method of the power system. According to the method, a generalized addition load analysis model is established aiming at core factors influencing the load of the power system, and objective, reasonable and accurate calculation of the basic load is realized by utilizing a theoretical model; moreover, the ...

Method for analyzing selenium content in crude selenium

The invention discloses a method for analyzing selenium content in crude selenium. The method comprises the following steps: dissolving sample acid, filtering, separating interference of acid-insoluble elements, reducing by using hydrazine hydrate, filtering, separating partial interference elements, precipitating, further dissolving in acid, testing tellurium by using a spectrograph, eliminating main interference elements, testing the selenium content of the filtrate by using the spectrograph, and modifying the analysis result. According to the method, a classical weight method is adopted for measurement, main interference elements are eliminated, loss of selenium in the filtrate is compensated, the result of the method is accurate and reliable, the analysis range is wide, not only is the crude selenium tested, but also pure selenium with the selenium content less than 99.9% can be tested, and great popularization values are achieved.

Enterprise carbon emission monitoring method, device and equipment and storage medium

The invention provides an enterprise carbon emission monitoring method and device, equipment and a storage medium. The method comprises the steps that S1, carbon emission E electric power generated by enterprise outsourcing electric power of an enterprise is acquired; s2, acquiring the proportion D industry of the power consumption of the industry where the enterprise is located in the total energy consumption of the enterprise; and S3, according to the carbon emission generated by the outsourcing power of the enterprise and the proportion of the power consumption of the industry where the enterprise is located in the total energy consumption of the enterprise, determining the total carbon emission Eenterprise of the enterprise on the day. According to the invention, the current-day total carbon emission of the enterprise is calculated according to the carbon emission generated by the enterprise outsourcing power of the enterprise and the proportion of the power consumption of the industry ...

Energy carbon emission prediction method and system based on multivariable grey model

The invention discloses an energy carbon emission prediction method based on a multivariable gray model, and the method comprises the steps: obtaining data information of a target region as a carbon emission influence factor set, and obtaining energy consumption data as carbon emission source data; preliminarily screening factors of the carbon emission influence factor set; determining a final carbon emission influence factor set; inputting the carbon emission influence factor set into a multivariable grey model, and training to obtain an optimal carbon emission prediction model; and performing carbon emission prediction of the target area by using the carbon emission prediction model. The invention also discloses a system for realizing the energy carbon emission prediction method based on the multivariable gray model. According to the energy carbon emission prediction method and system based on the multivariable gray model, through innovative algorithm design and prediction model design ...

Technological method for extracting antimony and bismuth from rare and noble metallurgical slag

The invention discloses a technological method for extracting antimony and bismuth from rare and noble metallurgical slag. The technological method comprises the following steps: (1) performing leaching: adding rare and noble metallurgical slag gold concentrates to a leaching reaction kettle, then adding an industrial sulfuric acid with the mass ratio of the gold concentrates to the sulphuric acid being 2-4:1, adding sodium chloride with the mass ratio of the gold concentrates to the sodium chloride being 0.6-1:1, leaving a solution in the leaching reaction kettle to stand, cooling the solution after standing until clarification, and then performing pressure filtration so as to obtain the leached slag and pressure filtration solutions, on which slag removal and separation are performed; (2) separating antimony so as to obtain antimonous oxychloride and an antimony precipitation solution; (3) separating bismuth so as to obtain bismuth oxide chloride. The technological method disclosed by ...

Wet flue gas desulfurization method

Multifunctional grinding and floating production line

The invention discloses a multifunctional grinding and floating production line. Two ore grinding machines, five flotation machines and a conveying pump are prepared, and are connected by a pipeline; a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve and an eighth valve are arranged on the pipeline; a control switch is arranged; the first valve, the third valve, the fifth valve and the seventh valve are serially connected to one signal circuit, and the second valve, the fourth valve, the sixth valve and the eighth valve are serially connected to the other signal circuit; and the control switch is in signal connection with the two signal circuits, and is in signal connection with all the valves, so that different working procedures can be switched and controlled between the two signal circuits in normal operation, and the opening/closing of single valve can be controlled in need of maintenance.

Energy carbon emission prediction method and system based on multi-source data

The invention discloses an energy carbon emission prediction method based on multi-source data, and the method comprises the steps: obtaining operation data information of a target region, processing the operation data information to obtain a data set, and dividing the data set; initializing an SA algorithm, a PSO algorithm and an LSSVM algorithm; updating the local optimal value and the global optimal value of the individual based on the fitness value of each particle in the PSO algorithm; updating the position of the current particle according to an SA algorithm and generating a new particle; annealing operation is carried out according to corresponding data of particles in the PSO algorithm; after iteration is completed, a trained LSSVM algorithm model is obtained; and performing a plurality of precision tests on the LSSVM algorithm model, and performing reverse normalization on output data when conditions are met to obtain final carbon emission prediction data. The invention also discloses ...