52results about How to "Easy-to-understand advantages" patented technology

The invention discloses a memory, and a dangerous chemical tank area safety risk early warning method and device and an apparatus. The method comprises the steps of determining a basic risk level of each chemical enterprise according to the grading score of the dangerous chemical major hazard source of a dangerous chemical tank area of each chemical enterprise; acquiring the alarm data of a preset monitoring variable of the dangerous chemical tank area in real time; when the alarm data accords with a first preset rule, generating the emergency alarm data; updating the alarm historical data of the dangerous chemical tank area according to the alarm data and/or the emergency alarm information; counting and calculating the alarm historical data regularly; and calculating a safety production risk early warning index of the chemical enterprise according to a second preset rule and by taking the basic risk level and the current early warning value as parameters. According to the invention, the actual risk condition of the dangerous chemical tank area can be automatically, timely and accurately reflected, and the management effect of the government on the safety production risk of chemical enterprises is improved.

The invention relates to a lifting type material transfer sealing automatic butt joint mechanism which is characterized in that an air bag mounting seat is connected with the top end of a lifting rod of a lifting cylinder, the air bag mounting seat is connected with the top end of a flexible connecting pipe, and the bottom end of the flexible connecting pipe is connected with a blanking connecting pipe; the air bag is arranged on the inner wall of the air bag mounting seat, and the flexible connecting pipe is a high-elasticity corrugated silicon rubber pipe. Accurate positioning can be achieved through the lifting air cylinder, and the material dust sealing effect is achieved through inflation and deflation of the air bag. Due to the high-elasticity characteristic of the flexible connecting pipe, the spacing distance of the pipelines with the two ends in butt joint can be allowed to be large or small in a limited range, the space problem of structural design is solved, and the problem of position deviation occurring in the assembling or using process can be solved. The structure of the air bag mounting base can avoid material accumulation of the corner structure. The material transferring device is simple in structure, convenient to machine and manufacture, low in cost and energy consumption, free of manual adjustment in the material transferring process, convenient to use and capable of saving resources.

The invention discloses evaluation equipment for a leakage and overflow monitoring device of a three-high gas well, and the equipment comprises a shaft module which comprises a sleeve and a drilling tool assembly penetrating into the sleeve, and the drilling tool assembly sequentially comprises a drill rod, a drill collar and a drill bit from top to bottom; the drilling fluid circulating module is used for enabling drilling fluid to circularly flow in the shaft module; the overflow simulation module is used for guiding the experimental gas into the shaft module; the well leakage simulation module is used for exporting the drilling fluid out of the shaft module; the to-be-evaluated monitoring device is connected to the drill collar; and the data acquisition and analysis module is in communication connection with the to-be-evaluated monitoring device, the overflow simulation module and the well leakage simulation module. The invention further discloses an evaluation method of the three-high gas well leakage and overflow monitoring device. The working conditions of well leakage and early overflow are simulated, the underground overflow monitoring device is evaluated, basis and support are provided for development of the overflow monitoring technology, and blowout accidents caused by missing of the optimal well control opportunity are reduced.

The invention discloses a memory, a non-linear predictive control method, a non-linear predictive control device and non-linear predictive control equipment. The non-linear predictive control method comprises the following steps of: constructing an object model group of a non-linear system through model identification; generating a dynamic equation of the object model group, and calculating disturbance characteristics of the object model group according to the dynamic equation; respectively acquiring an actual output measurement value and a state estimation value of the nonlinear system at the current moment; calculating the optimal state estimation value of the nonlinear system at the next moment through an extended Kalman filter; and substituting the optimal state estimation value of the dynamic equation of the object model group into a nonlinear predictive control algorithm of the nonlinear system to obtain an optimal solution, wherein the optimal solution is used for input of the object model group. According to the non-linear predictive control method, the non-linear predictive control device and the non-linear predictive control equipment, the influence caused by model mismatch can be reduced by reducing the frequency and degree of model mismatch.

A hydrogen sulfide leakage monitoring and arresting test system disclosed by the invention comprises a test chamber forming a closed space; a hydrogen sulfide release device which is arranged in the closed space, and can move and is adjustable in height; a plurality of hydrogen sulfide concentration detectors are distributed at different positions of the closed space; and an arresting agent spraying device which can spray an arresting agent to the closed space. The invention also discloses a hydrogen sulfide leakage monitoring and arresting test method. The test system provided by the invention can simulate a hydrogen sulfide gas leakage scene, monitor a gas diffusion rule after leakage and test a removal effect of a hydrogen sulfide arresting agent, systematically realizes the simulation, monitoring and arresting test of hydrogen sulfide leakage, facilitates research on hydrogen sulfide gas leakage and arresting, and provides reference for actual production.

The invention discloses a method for evaluating a corrosion defect of a pipeline. The method at least comprises the following steps: acquiring parameters of the pipeline and parameters of the defect; obtaining allowable stress [sigma] of the pipeline; establishing a finite element model according to the obtained parameters of the pipeline and parameters of the defect; performing simulation through the established finite element model to obtain the maximum stress sigma max of a position with the corrosion defect; establishing a pipeline corrosion defect evaluation equation A = [sigma]/sigma max to obtain the safety state of the pipeline, wherein when A = [sigma]/sigma max > 1, it is considered that the pipeline is in the safety state, and when A = [sigma]/sigma max < = 1, it is considered that the pipeline is in a failure state. The invention further discloses a device for evaluating the corrosion defect of the pipeline. According to the method and device for evaluating the corrosion defect of the pipeline, the conservative property of an existing formula is avoided, and the evaluation result is more accurate; and the application range is wider.

The invention discloses a memory, and a hydrogen network optimization method, device and equipment based on original equipment. The method comprises the following steps of: establishing a multi-lumped desulfurization reaction kinetic model according to a diesel oil hydrodesulfurization process; on the premise of not increasing equipment investment, establishing a hydrogen network optimization model by taking maximum recovery of hydrogen as a guide and taking maximum hydrogen network operation benefit as a target; by taking specific working condition data as input parameters, calculating product property data through the desulfurization reaction kinetic model; when the product property data does not meet a preset condition, updating the working condition data; when the product property data meets the preset condition, outputting a new hydrogen boundary condition and a small molecule hydrocarbon generation amount to the hydrogen network optimization model; and generating a hydrogen optimization scheme according to the hydrogen network optimization model. The method can be suitable for obtaining accurate results under various working conditions, so that a practical and feasible optimization scheme can be obtained, and the method has remarkable economic benefits.

The invention discloses an ammonia spraying static mixer and a dust removal method, the mixer has one or more layers and is arranged in a flue, each layer of mixer is composed of a plurality of static mixer units which are arranged side by side, each static mixer unit comprises a V-shaped plate, wherein wing plates on two sides of the V-shaped plate are provided with openings to enable flue gas in the flue to form horizontal collision; and a hollow pipe positioned at the lower part of the V-shaped plate and used for collecting and guiding dust falling after horizontal collision of the discharged flue gas. According to the ammonia spraying static mixer with the dust removal function and the dust removal method, the defect that in the prior art, due to the fact that an ammonia spraying static mixer cannot effectively remove dust, catalyst bed hole channels, ammonia nozzles, rear-end equipment and other parts are blocked can be effectively overcome.

The invention discloses a memory and a power distribution network power system control decision method, system and device, and the method comprises the steps: building a simulation model of a power distribution network power system, and setting the parameters of the simulation model according to the equipment parameters and operation parameters of the power distribution network power system; determining a corresponding anticipated control scheme according to the control purpose of the power distribution network power system, or determining a control scheme set comprising a plurality of anticipated control schemes; performing a simulation experiment through the simulation model according to the anticipated control scheme; and determining the feasibility of the anticipated control scheme according to a simulation result of a simulation experiment, or determining an optimal execution scheme from the control scheme set. According to the method, a safe and effective control decision can be quickly made for operation control or fault response control of the power distribution network power system, so that the safety and effectiveness of the control decision of the power distribution network power system are improved.

The invention discloses a memory, and a method, a device and equipment for determining a high consequence area of an oil and gas pipeline. The method comprises the following steps: taking the geographic position of the oil and gas pipeline as a center line, and determining a satellite remote sensing image of a strip-shaped area at a preset influence distance from the two sides of the center line as a monitoring area; according to the satellite remote sensing image of the monitoring area and the video monitoring data of the unmanned aerial vehicle inspection device in the monitoring area, carrying out ground object recognition; determining distribution information of the contiguous buildings according to the recognition result, and dividing the monitoring area into a plurality of continuous monitoring sub-areas according to the distribution information of the contiguous buildings and/or the recognition result; building attributes of the contiguous buildings and the number of resident mobile phone numbers in the monitoring sub-regions are obtained respectively; and determining the consequence level of the monitoring sub-region through a preset rule according to the judgment parameter. According to the invention, the consequence level of the corresponding monitoring sub-region can be corrected timely, so that the consequence level can truly reflect the real consequence state of the corresponding current monitoring sub-region.

The invention discloses a memory, and a control method and device for an airborne laser radar system. The method comprises the following steps of: calibrating a laser foot point according to the spatial position information of an unmanned aerial vehicle acquired by a GPS, the attitude information of the unmanned aerial vehicle in space measured by an IN, the distance from a laser emission point to the laser foot point and an angle of a laser beam measured by a laser scanner, and the acquired data of a placement error of the system; determining a plurality of connection points in an overlapped air strip of the two adjacent air strips; respectively substituting the observation values of the connection points in the two air strips into a preset observation equation, and respectively generating error equations corresponding to the connection points; and calculating a placement angle error parameter of the onboard laser radar system according to a least square algorithm by taking the error equation corresponding to each connection point as a parameter. According to the memory, the control method and the control device, the placement angle error can be accurately obtained, so that the overall measurement precision of the system can be improved.

The invention relates to an automatic ion exchange control device, a control method and a control system, an acid feeding pipeline, a conventional feeding pipeline and a reverse top liquid discharging pipeline are arranged at the top end of an ion exchange column, a bottom opening is formed in the bottom end of the ion exchange column, and a diluted hydrochloric acid pipeline and a diluted sulfuric acid pipeline are respectively communicated and connected with the acid feeding pipeline; the purified water pipeline and the extracting solution pipeline are respectively communicated and connected with the conventional feeding pipeline, the dilute caustic soda liquid pipeline, the desorption solution pipeline, the blow-off pipeline and the high ammonia nitrogen blow-off pipeline are respectively communicated and connected with the bottom opening, and the reverse jacking solution pipeline is communicated and connected with the reverse jacking solution discharging pipeline. Automatic feeding and metering are achieved through technological process control, purification and separation after regeneration of the ion exchange column and automatic column adsorption are achieved through forward and reverse automatic washing, fraction separation and collection of an extracting solution are achieved through analysis of an online analyzer, frequent field operation of operators is not needed, and the automation degree is high.

The invention discloses an anti-explosion centrifugal fan. The anti-explosion centrifugal fan comprises an impeller, a machine shell, a transmission assembly and an anti-explosion motor. The transmission assembly comprises a main shaft, a bearing and a coupler. The impeller, the machine shell and the transmission assembly are made of aluminum alloys or non-aluminum alloys, and the total mass fraction of aluminum and magnesium in the non-aluminum alloys is smaller than 15%. The invention further discloses an anti-explosion method of the anti-explosion centrifugal fan. The anti-explosion method comprises the steps that the impeller, the machine shell and the transmission assembly are made of materials which do not generate sparks during friction and collision; the rigidity of the machine shell and the impeller is set; a gap between the impeller and the machine shell is set to ensure that the impeller and the machine shell do not generate friction; the material and the thickness of a lining layer of the machine shell are set; and the impeller and the main shaft are mounted so as to ensure that the impeller and the main shaft are fixedly connected in the axial direction and the radial direction. According to the anti-explosion centrifugal fan and the anti-explosion method thereof, the risk that flammable and explosive media are ignited in the anti-explosion centrifugal fan is reduced through internal spark-free design.

The invention discloses a report generation method and device for the petrochemical industry, equipment and a storage medium. The method comprises the steps of obtaining an ad-hoc query request; the analyzer obtains corresponding form data through analysis of the report form and the component element model according to the ad-hoc query request, and obtains required report result data from sample physical property analysis data of a preset data source; generating a report instance according to the form data and the report result data; the renderer executes rendering of a webpage report and an EXCEL electronic report respectively, and generates report files of a webpage version and an EXCEL version of a table comprising corresponding styles, formats and formats according to report instances; the converter is used for converting report files of a webpage version and an EXCEL version into a PDF format and a DOC format; according to the method, the efficiency of modifying or redefining reports in analysis and assay work in the petrochemical industry can be improved, and the cost can be reduced.

The invention discloses a manufacturing method of a light-emitting device, a pixel unit and the light-emitting device. The manufacturing method of the light-emitting device comprises the steps that a driving integrated circuit wafer is provided with a plurality of control circuits; three miniature LEDs which emit red light, green light and blue light after being electrified form a group, and a plurality of groups of miniature LEDs are stacked on a driving integrated circuit wafer and are electrically connected with corresponding control circuits to be packaged. The packaged driving integrated circuit wafer is cut into a plurality of driving ICs through laser, and a control circuit of each driving IC is electrically connected with a single group of miniature LEDs to form a pixel unit of a 3D packaging stack structure; and the electronic circuits, transferred to the single-chip display substrates, of the pixel units are connected in series and combined into a single-chip light-emitting device, and the electronic circuits electrically connected with the display substrates form a multi-chip light-emitting device. Therefore, the pixel unit with the driving IC can be manufactured, the occupied surface area of the display substrate is minimum, the excellent filling rate is provided, the advantage of maximizing the transparent area is achieved, and the pixel unit becomes an ideal choice of a transparent display.

The invention discloses a memory, and hydrogen resource optimization, device and equipment for a hydrogen system, and the method comprises the steps: carrying out the logic division of the hydrogen system, and building a corresponding unit model; establishing a substance mathematical model and an energy mathematical model; determining whether a feed stream of the hydrogen recovery unit can be used as a feed of the hydrogen using unit to determine whether the feed stream is used as a hydrogen supply stream or a hydrogen recovery stream; performing simulation solution on the substance mathematical model and the energy mathematical model to obtain a simulation operation result as a system initial value of the hydrogen system; according to a preset hydrogen consumption prediction model, obtaining a hydrogen consumption calculation result corresponding to the hydrogen using unit; and determining the value of each optimization variable by taking the minimum energy consumption of the hydrogen system as a target according to a hydrogen consumption measurement result. According to the method, firstly, the accuracy of the hydrogen consumption result value is improved, and then the objective function and the mathematical model are established from the angle of energy consumption minimization of the hydrogen system, so that parallel optimization of the hydrogen consumption and the energy consumption of the hydrogen system is achieved.

The invention discloses a nano-film medicinal patch. The nano-film medicinal patch is prepared by the following steps of mixing 35-40% of radix flemingiae, 4-7% of radix angelicae sinensis, 4-7% of rhizoma kaempferiae, 4-7% of olibanum, 4-7% of myrrh, 4-7% of radix angelicae, 4-7% of rhizoma chuanxiong, 4-7% of radix gentianae macrophyllae, 4-7% of cortex cinnamomi, 4-7% of rhizoma corydalis, 4-7% of wintergreen essential oil and 4-7% of menthol, grinding into medicine carrying particles with the diameter of 65-100 nanometers, mixing the medicine carrying particles with medical-grade low-sensitivity adhesive according to a certain proportion, forming hydrogel through chemical crosslinking or physical crosslinking, wherein a layer of ultraviolet curing adhesive is coated between the elastic cloth made of polyurethane (PU) and the hydrogel and is cured by ultraviolet irradiation to form an adhesive layer, and the patch with a dressing surface and a stretching surface is produced; the outer side of the hydrogel used as the dressing surface is covered with release paper; and a protective film is attached to the outside of the elastic cloth that serves as the stretching surface. According to the nano-film medicinal patch prepared by the method, the structural body of the nano-scale particles is stored for a long time by using the hydrogel, so that the effect of the traditional Chinese medicinal materials and the service life of the patch are prolonged, and the skin allergy is avoided or the allergy occurrence rate is reduced.

The invention discloses a memory, a submarine cable fault detection and diagnosis method, a submarine cable fault detection and diagnosis device and submarine cable fault detection and diagnosis equipment, and the method comprises the steps: obtaining the vibration information data, collected by a vibration monitoring device, of an armor layer steel wire; comprising a vibration sensor is arranged on a submarine cable repeater; generating a corresponding vibration waveform according to the vibration information data; generating a detection and diagnosis result of the submarine cable according to the characteristics of the vibration waveform; the detection and diagnosis result comprises one or any combination of whether the submarine cable is abnormal in stress, whether the submarine cable is faulty, a fault type and a fault position; the submarine cable fault detection and diagnosis method is not affected by sea tide strong electromagnetic interference, so that judgment can be made in time even if the submarine cable is slightly mechanically damaged, and the accuracy of fault detection and diagnosis is improved.

The invention relates to a double-layer injector device for granular fat purification, an external injector comprises an outer tube, an external injector push rod and an external injector piston, the external injector push rod and the external injector piston are arranged in the outer tube, the external injector piston is arranged at the top end of the external injector push rod, and the external injector push rod and the external injector piston are respectively provided with an opening end; the internal injector comprises an inner tube arranged in the push rod of the external injector, a second port is formed in the top end of the inner tube, and the second port is detachably connected with the open end of the push rod of the external injector. The external injector piston and the external injector push rod are both provided with the opening ends, the second port of the internal injector is detachably connected with the opening ends and communicated with the external injector through the opening ends, the external injector is connected with the sealing cap, and the unique closed centrifugal device is formed. The method solves the technical problem that the safety of the purified granular fat after use is affected due to the fact that an existing purification mode is tedious in operation and easy to pollute.

The invention discloses a memory, a pipeline leakage environmental influence assessment method, device and equipment, and the method comprises the steps: dividing pollution receptors of environmental hazards of oil pipeline leakage in advance, and determining each index item of each pollution receptor; the leakage amount of the pollution source in the oil pipeline leakage accident is also set as an index item; generating an index quantitative evaluation table by setting the value range of each index item or the corresponding relationship between the property and the single influence level and setting the corresponding relationship between the value range of the leakage amount and the single influence level; determining a single influence level value corresponding to each index item according to the working condition of the oil pipeline leakage accident; generating a quantized grade fuzzy subset according to the index quantitative evaluation table and each single influence grade value, and generating an environmental influence evaluation result through a fuzzy comprehensive evaluation method; according to the invention, accurate and timely evaluation of the influence and consequence of oil pipeline leakage on the environment can be realized.

The invention discloses a system for monitoring the concentration of hydrogen peroxide in raffinate, the raffinate is raffinate in an anthraquinone process hydrogen peroxide production device, the monitoring system comprises: a sampling pipeline connected with a sampling port of the raffinate; a stirring and separating tank, used for stirring and mixing pure water and the raffinate passing through the sampling pipeline, standing and separating into a water phase and an organic phase; and a detection unit, used for detecting the concentration of hydrogen peroxide in the water phase obtained by standing and separation. The invention also discloses a method for monitoring the concentration of hydrogen peroxide in raffinate. Through online sampling, separation and detection, online monitoring of the hydrogen peroxide concentration of the raffinate in the anthraquinone process hydrogen peroxide production device is realized, and the production safety is improved.

The invention discloses a memory, and an electromagnetic wave control method, device and equipment for pipeline power transmission. The method comprises the following steps: generating an electromagnetic wave frequency value of a high-frequency generator for pipeline power transmission according to a preset algorithm; generating breakdown electric field intensity and dielectric constant of the conveying medium under different pressures according to the property data of the conveying medium; calculating the maximum electric field intensity in the conveying pipeline according to the structural data of the conveying pipeline and the property of the transmission medium; calculating the maximum transmission energy density capable of being borne by the conveying pipeline according to the maximum electric field intensity; and calculating the output power of the high-frequency generator according to the maximum transmission energy density. According to the invention, the transmission efficiency and safety during power transmission through the transmission pipeline can be improved.

A roller body of a steel slag cooling and separating device is a hollow horizontal cylindrical barrel, roller teeth are arranged on the arc-shaped outer side wall of the roller body, and modified fluid heating pipelines are arranged on the arc-shaped inner side wall of the roller body in parallel; and modified fluid cooling pipelines which are arranged in parallel and soaked in ionized water are arranged in the modified fluid medium heat exchange device. By adopting the modified fluid medium, the heat of the steel slag is recycled, and water resources are saved through cyclic utilization. And the hot slag plate conveyor is arranged between the discharge end of the steel slag cooling and separating device and the feed end of the steel slag forced cold pulverization roller. The steel slag forced cold pulverization roller is a variable frequency speed regulation type roller and is internally provided with a rod-shaped crushing medium, the steel slag is further crushed, a steel slag product is directly separated out through a heavy powerful screen and a magnetic separator, and a steel slag magnetic separation production line does not need to be built any more. The whole process is completed through mechanical equipment, the automation level is high, the labor intensity of workers is reduced, and manpower is saved.

The invention discloses an electronic liquid level meter. The electronic liquid level meter comprises a measuring circuit arranged in a shell, and a sleeve arranged outside the shell; a communicating pipe is arranged between the upper end of the sleeve and a tank body serving as a measurement object; the electronic liquid level meter further comprises a current converter which is used for converting the current of the measuring circuit into an electric signal; the measuring circuit comprises a power interface, a plurality of insulated gate bipolar transistors (IGBTs) and a resistor string; the positive electrode of the power interface is connected with the measuring resistor at the head end of the resistor string and the collector electrode of each IGBT; emitting electrodes of the IGBTs are respectively connected among the resistors; each IGBT is also provided with a corresponding RC buffer circuit; the cathode of the power interface is connected with the protective resistor; grid contacts of the IGBTs are arranged outside the shell; a floater contact which is used for conducting the corresponding IGBT by being in contact with a pole contact is arranged in the sleeve; and a connecting wire connected with the floater contact is connected with a floater through a communicating pipe. According to the electronic liquid level meter, the service life of the electronic liquid level meter can be effectively prolonged, and the electronic liquid level meter has high measurement precision and low failure rate.

The invention discloses a memory, a hydrogen utilization optimization method, device and equipment for a hydrogen network based on equipment reconstruction. The method comprises the following steps of determining hydrogen network parameters including new hydrogen composition and new hydrogen flow as adjustable parameters; taking specific working condition data including adjustable parameters as input parameters, and judging whether the product property data corresponding to the current working condition meets a preset quality standard or not through a reaction kinetic model; when the result is no, adjusting the adjustable parameters and carrying out regression calculation until the product property data meets the quality standard; establishing a hydrogen network optimization model by taking increase of hydrogen consumption as a guide, taking increase of equipment and pipeline investment as an available means and taking hydrogen network economic benefit maximization as a target; outputting a new hydrogen boundary condition and a small molecule hydrocarbon generation amount to a preset hydrogen network optimization model; and generating a hydrogen supply scheme of the hydrogen network according to the hydrogen network optimization model; The method is advantaged in that accurate results can be obtained under various working conditions, and then a practical and feasible optimization scheme can be obtained.

The invention discloses a biological aerated filter reactor and a treatment method, and the reactor comprises a water control area which is arranged at the bottom of the reactor and is internally provided with a piston which transversely reciprocates, the piston drives sewage entering in two directions to upwards flow through the whole filter bed twice in a stroke of a complete cycle, and particles and suspended solids in the sewage are discharged out in time; the filter bed area comprises a plurality of bed layers and is arranged above the water control area, the plurality of bed layers are filled with filter materials with biological membranes, and the sewage flows in a broken line shape among the bed layers. According to the biological aerated filter reactor and the treatment method, the problem of energy consumption caused by backwashing of an existing biological aerated filter can be effectively solved, the water distribution uniformity of the filter can be enhanced, and the sewage treatment efficiency can be effectively improved.

The invention discloses an armor device for experiments of non-human primates. A back plate comprises a back plate upper portion and a back plate lower portion which are fixedly connected, a back plate lower portion opening hole is formed in the back plate lower portion, an indwelling pipeline protection box is arranged outside the back plate lower portion opening hole, and the back plate upper portion and the back plate lower portion are connected with a web through connecting steel wires; the outsides of the back plate upper portion and the back plate lower portion are wrapped with gauze, a top plate of the indwelling pipeline protection box is provided with a protection box hole corresponding to the back plate lower portion opening hole, and a side plate of the indwelling pipeline protection box is detachable. The back plate is made of aluminum alloy, so that the weight of the armor device is greatly reduced, the animal wears the armor device more comfortably, and the welfare of the animal is protected to the maximum extent. The back plate is wrapped with gauze, and the outer side of the connecting steel wire is sleeved with a rubber protection tube which is used for preventing skin ulceration and even infection caused by friction between the shoulders and the abdomen of the animal when the animal wears the armor device for a long time. The side plate of the indwelling pipeline protection box is detachable, so that the damage condition of the indwelling pipeline on the back can be checked regularly.

The invention discloses a multi-frequency selection noise reduction device which comprises an inner-layer noise reduction unit which is arranged on one side close to a noise source and is sequentially provided with an inner-layer substrate, an outer-layer substrate, an outer-layer substrate, an outer-layer substrate, an outer-layer substrate and an inner-layer noise reduction unit from inside to outside, an inner coating layer adhered to the inner layer substrate; the inner sound-absorbing layer is made of a porous sound-absorbing material; and the inner sound insulation layer is of a panel structure. The vacuum noise reduction unit is provided with a vacuum outer framework, and the vacuum outer framework is supported on the panel of the inner sound insulation layer through a first vibration reduction connecting piece to form a closed vacuum layer; the vacuum noise reduction unit further comprises a heat conduction communicating piece, and the heat conduction communicating piece penetrates through the inner layer noise reduction unit and the closed vacuum layer. The device can effectively isolate complex industrial noise in different frequency bands of medium-high frequency and medium-low frequency, solves the problem of ventilation and heat dissipation of high-temperature equipment pipelines, and is simple in structure and good in universality.

The invention discloses a volatile organic compound on-line monitoring method and system, and the method comprises the steps: filling a liquid phase region in a sampling container with a collected experimental liquid phase sample through a liquid phase sample injection port arranged at the top of the sampling container; stirring and disturbing the experimental liquid-phase sample until gas-liquid two-phase dynamic balance is achieved; the gas phase concentration value of the sampling container is obtained through a concentration sensor, and the liquid phase concentration value of an experimental liquid phase sample in the sampling container is obtained through experimental analysis; taking the ratio of the gas phase concentration value to the liquid phase concentration value as a gas-liquid distribution constant of a preset calculation model; when the underground water is monitored in real time, the gas phase concentration value collected by the concentration sensor in real time is used as input, and the real-time total volatile organic compound concentration of the underground water is calculated according to a preset calculation model. The total concentration of the volatile organic compounds in the underground water sample can be calculated directly according to the gas phase concentration value collected by the concentration sensor in the sampling container, so that the accuracy and the real-time performance of a monitoring result can be improved.

The invention discloses a memory, an Internet of Things data transmission management method, device and equipment, and the method comprises the steps: further dividing an edge layer in a cloud edge network architecture in a framework model of the Internet of Things into an edge basic network facility layer and an edge intelligent equipment layer; dividing the types of the data transmitted by the Internet of Things into real-time data, near-real-time data and non-real-time data according to different requirements of response speed and processing capability; and determining a transmission path of to-be-transmitted data in the Internet of Things according to a preset rule. According to the method, unnecessary transmission of data transmission in the Internet of Things can be effectively reduced, so that the overall throughput of the Internet of Things can be effectively reduced, the overall operation efficiency is improved, and finally the purpose of improving the response speed of the Internet of Things is achieved.