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207 results about "Electrical conductivity meter" patented technology
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An electrical conductivity meter (EC meter) measures the electrical conductivity in a solution. It has multiple applications in research and engineering, with common usage in hydroponics, aquaculture, aquaponics, and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
Simulator for transport of soil pollutant
InactiveCN103424341ARealize automatic collectionHigh precisionSurface/boundary effectTime changesEngineering
The invention discloses a simulator for transport of soil pollutant. The simulator comprises a solution injection system, a testing column, a measuring system, and an outlet collecting system, wherein the solution injection system comprises solution injection bottles and guide pipes; valves are arranged at two ends of the testing column, conductivity electrode mounting holes are formed in a side face of the testing column, and an air outlet hole is formed in the top of the testing column; the measuring system comprises conductivity electrodes, a conductivity meter, a pressure sensor, a date collector and a computer; the outlet collecting system comprises a water outlet pipe and an outlet collecting container. According to the simulator, the transfer behavior of pollutants in soil body can be simulated indoors; distribution condition of concentration of pollutant in time and space and the real-time changing of the outlet volume can be acquired in a real-time manner during the simulation; the automation degree is high and the precision is high; therefore, the simulator obviously keeps ahead of relative instruments at home and abroad.
Owner:HOHAI UNIV
Method for flow-electrode capacitive deionization (FCDI)-based desalination and application
InactiveCN106044970AReduce manufacturing costSimple structureDispersed particle separationWater/sewage treatmentPeristaltic pumpAutomatic control
The invention discloses a method for flow-electrode capacitive deionization (FCDI)-based desalination and application. According to the method, a direct current voltage stabilization power supply, a flow electrode, a dual-channel peristaltic pump, an FCDI module unit, a small-size peristaltic pump, a conductivity meter, an organic glass fixing device, a stainless steel interface and an electrode connection splice are involved; one end of each of two pump pipes of the dual-channel peristaltic pump is arranged in each of anode chamber flow electrode liquid and cathode chamber flow electrode liquid, and the other end of the pump pipe is connected with the stainless steel interface in the lower part of the organic glass fixing device; the flow electrode enters the FCDI unit module through the stainless steel interface through pressure provided by the dual-channel peristaltic pump; incoming water is pumped into the FDCI unit module with a prepared sodium chloride solution with different concentration at certain flow speed through the small-size peristaltic pump; the conductivity meter is used for measuring the conductivity concentration of discharged water. A reaction device used in the method is simple in structure, low in operation cost and easy to operate, and no chemicals is fed; automatic control and on-line monitoring are easy to implement; the method is low in energy consumption, and the preparation cost of the electrode is lowered; the method can be applied to the technical field of environmental engineering and water treatment.
Owner:NORTHEASTERN UNIV
Reverse Osmosis Filtration Devices with Rfid Tag-Powered Flow and Conductivity Meters
The present invention relates to reverse osmosis filtration devices, and more particularly, to membrane filtration devices (10, 11, 12) that have flow meters and fluid conductivity meters powered by RFID tags. Embodiments of the present invention comprise reverse osmosis filters and filtration systems comprising measuring devices, including flow and conductivity meters. The meters of the present invention are preferably located on or within permeate core tubes (16) of filtration devices and systems.
Owner:NITTO DENKO CORP +1
Precious Metals Transaction Systems and Methods
InactiveUS20140201033A1Facilitate documentationImprove artBuying/selling/leasing transactionsPresent methodDigital recording
Systems and methods directed to the purchase of articles formed of precious metals are disclosed. Precious metal content is analyzed using an x-ray fluorescence (“XRF”) analysis instrument to determine alloy content, in combination with an ultrasound or electrical conductivity instrument to confirm uniformity of cross-sectional content. The present method thus advances the art of precious metals transactions by precisely analyzing and determining precious metal content and purity, and combining said data with real-time pricing and a digital record of the transaction including the identity of the seller. An automated system is disclosed for fully automating the purchasing of article of precious metals.
Owner:THE CRAIN GRP
Method for rapidly determining nanofiltration membrane kind and operation conditions during water processing
InactiveCN103933865AReduce pollutionImprove digital researchSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisFiltrationOperant conditioning
The invention discloses a method for rapidly determining nanofiltration membrane kind and operation conditions during water processing, and belongs to the field of nanofiltration membrane recovery during water processing. The method comprises the steps: (1) screening pressure X1, temperature X2 and water inlet flow X3 as response factors, and designing experiment combinations; (2) employing membrane flux Y1 and pollution index Y2 as response value; (3) immersing a nanofiltration membrane in pure water, pre-pressing for usage; (4) filtering wastewater by a precision filter; (5) performing filtration experiments; (6) at the beginning and after two hours of the membrane filtration experiments in the step (5), respectively employing a balance to measure the water outlet flux, employing a conductivity instrument to measure the conductivity, and employing an ultraviolet spectrophotometer to measure UV<254>, so as to obtain salt removing rate and organics removing rate; (7) determining a regression model equation; (8) determining optimum operation conditions; and (9) determining membrane performance evaluation index I. The method is capable of relatively rapidly performing quantitative evaluation on nanofiltration membrane performances and comparing various nanofiltration membranes through a quantification process.
Owner:NANJING UNIV
Automatic online cleaning system and method for self-adapting circulating cooling water heat exchanger
The invention provides an automatic online cleaning system for a self-adapting circulating cooling water heat exchanger. The system comprises a heat exchanger, a centrifugal pump and a water storage tank which are sequentially connected through a pipeline so as to form a closed loop, wherein two blowdown tanks are parallelly mounted at the two ends of the water storage tank, a branch pipe is mounted on a pipeline of a water inlet end of the heat exchanger and is connected to an air compressor, the blowdown tanks are connected to an automatic ice maker, and filtering devices are arranged in the blowdown tanks; temperature sensors, flowmeters and conductivity meters are mounted on the pipeline at the water inlet end and water outlet end of the heat exchanger and are all connected with a data acquisition system, the data acquisition system is connected with a computer and transmits data signals of the temperature sensors, flowmeters and conductivity meters to the computer for processing, the computer is connected with a control system, and the control system is connected with the automatic ice maker and controls the startup and shutdown of the automatic ice maker. According to the automatic online cleaning system and method for the self-adapting circulating cooling water heat exchanger, the data acquisition system can be used for acquiring temperatures of water inlet and water outlet of the heat exchanger and carrying out feedback, and the computer gives an instruction to the control system so as to automatically adjust cleaning volume.
Owner:WUHAN JEHOO HIGH TECH
Shale aperture measurement device and method based on imbibition and ion diffusion property
ActiveCN106501151AReduce the impactEasy to operatePermeability/surface area analysisDiffusionMeasurement device
The invention discloses a shale aperture measurement device and method based on imbibition and ion diffusion property. The device comprises a high-precision analytical balance (1), a support (2), a flask (3), a fishing line (4), a magnetic stirrer (5), a lifting system (6), a conductivity meter (7) and a constant temperature humidity chamber (8). According to the shale aperture measurement device and method based on the imbibition and the ion diffusion property, in a way of experimental measurement, characteristic high capillary force imbibition and strong ion diffusion property of shale are given full play to, a high-precision shale imbibition and ion diffusion synchronous detection device is designed, an average aperture evaluation methodology suitable for shale is provided, and science and precision of shale aperture measurement are further improved; the shale aperture measurement method based on the imbibition and the ion diffusion property has the advantages of being simple in operation, small in environmental influence, low in testing cost and reliable in result.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI
Urban rainwater runoff high-efficiency intercepting well and intercepting method
ActiveCN104499561AImprove closureSimple structureSewerage structuresFluid resistance measurementsStorm water runoffEngineering
The invention provides an urban rainwater runoff high-efficiency intercepting well which comprises a gate and a hoist, wherein the gate can seal an intercepting opening; the hoist is used for opening or closing the gat; a detection runner is arranged in a shaft; an electrical conductivity detection probe is fixed in the detection runner; and an electrical conductivity meter is mounted on the outer surface of an intercepting well cover plate. The electrical conductivity detection probe is used for measuring the electrical conductivity in rainwater runoff in real time; a worker can control the opening or closing of the gate according to the detected electrical conductivity so as to conduct interception; and the high-efficiency intercepting well is simple in structure, can conveniently detect the electrical conductivity in rainwater runoff and can conduct interception according to the electrical conductivity. The invention provides an intercepting method of the high-efficiency intercepting well, which can control the opening or closing of the gate according to the detected electrical conductivity to conduct interception so as to achieve the function that the intercepting well conducts flow distribution according to the instant concentration of rainwater runoff, and enable the intercepting wall to achieve a better operating effect in the whole drainage system.
Owner:CHONGQING UNIV
Apparatus for producing purified drinking water
ActiveCN101028942AMeet hygiene requirementsNo toxic effectWater/sewage treatment by ion-exchangeWater/sewage treatment bu osmosis/dialysisFiberActivated carbon filtration
An apparatus for preparing the purified drinking water by removing the ions of metals (especially the heavy metals) and killing microbes has PPF filter, regeneratable cationic exchange fiber filter, accurate activated carbon filter, reverse osmosis, system, electric conductivity instrument, blowdown by-pass, waste water recovering tanks, control system, etc.
Owner:桂林正翰科技开发有限责任公司
Ammonification anthropomorphic inspection type intelligent control system for condensed water in once-through boiler and control method
ActiveCN106292455APrecise and stable controlSimple structureProgramme controlWater treatment parameter controlAlternating currentMetering pump
The invention discloses an ammonification anthropomorphic inspection type intelligent control system for condensed water in a once-through boiler and a control method. The intelligent control system comprises a flowmeter for acquiring real-time flow Q of a condensed water pump, a first conductivity meter, a second conductivity meter, a third conductivity meter, a DCS controller, and an alternating-current frequency converter which is connected with the DCS controller and a dosing metering pump respectively and is used for receiving a rotating speed frequency signal sent by the DCS controller and adjusting the frequency of the rotating speed of a motor of the dosing metering pump. The ammonification anthropomorphic inspection type intelligent control system for the condensed water in the once-through boiler avoids the hysteretic nature and the non-timeliness which are caused by manual adjustment, saves lots of labor cost and realizes stable and precise control over the pH value of the condensed water in the once-through boiler.
Owner:XIAN THERMAL POWER RES INST CO LTD
Physical simulation apparatus and method of convection and diffusion of salt-cavern gas storage cavity
The invention, which belongs to the technical field of establishment of an underground salt cavern gas storage, discloses a physical simulation apparatus and method of convection and diffusion of a salt-cavern gas storage cavity. The physical simulation apparatus comprises a simulation box, a displacement pump, a discharge pipe, a conductivity meter, a shooting device opposite to the simulation box, a cavity construction tubular column and a computer. The displacement pump and the discharge pipe are connected to the cavity construction tubular column; a first flowmeter is connected between the displacement pump and the simulation box; a second flowmeter is also arranged at the discharge pipe; and the shooting device, the first flowmeter, and the second flowmeter are connected to the computer by an operable way. According to the invention, simulation of various working conditions is carried out in the simulation box; fresh water is injected into the displacement pump and the discharge pipe discharges brine to make convection and diffusion phenomena, thereby reflecting the working condition and environment of the cavity construction process of the salt cavern gas storage actually. Therefore, the method and process parameters that are obtained based on the simulation apparatus and method and are used for accelerating a rock salt cavity construction speed become true and accurate, thereby improving the cavity construction speed and the cavity shape controlling beneficially.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Off-line washing and repairing device for multifunctional waste reverse osmosis membrane
ActiveCN102179180AEasy to operateEasy to cleanMembranesReverse osmosisReverse osmosisPressure difference
The invention discloses an off-line washing and repairing device for a multifunctional waste reverse osmosis membrane, which mainly consists of a valve, a flowmeter, a conductivity meter, a pressure gage, a water inlet instrument pH, a booster pump P, and precise filters PP1 and PP2. The off-line washing and repairing device for a multifunctional waste reverse osmosis membrane is simple to operate, obvious in washing effect and precise to test; the off-line washing and repairing device is capable of comprehensively washing and repairing in multiple steps under complicated scale formation condition so as to obtain the best washing and repairing effect; the washing number can be increased according to different conditions, and the washing and repairing effects of the waste membrane is better judged in real time; simultaneously, high-speed washing and high-pressure repairing can be performed on the waste reverse osmosis membrane, and the relevant data of the membrane desalting performance during the chemical washing and repairing process can be detected so as to obtain the parameters such as the desalting ratio, water recycling ratio and pressure difference of the reverse osmosis membrane. A plurality of reverse osmosis membranes can be washed and repaired for once through extended function. The repaired reverse osmosis membrane has the characteristic of high repairing efficiency, and the performance reaches or approaches the new membrane index.
Owner:山东科伦药业有限公司
Automatic ammonia-water preparing device and method
The invention discloses an automatic ammonia-water preparing device and method. The automatic ammonia-water preparing device comprises an automatic ammonia-water preparation control cabinet, a drug dispensing box and anti-ammonia-slip device, and an ammonia-gas detecting and warning system, wherein the automatic ammonia-water preparation control cabinet and the drug dispensing box and anti-ammonia-slip device are connected; the conductance ratio of ammonia water in a drug box is detected by utilizing a conductivity meter connected with a conductivity electrode in the drug box, and the concentration of ammonia water is obtained by the matrixing of PLC in the automatic ammonia-water preparation control cabinet, when the concentration of ammonia water is lower than a set value, the PLC sends out a command to open an electric ammonia-gas inlet valve, and when the concentration of the ammonia water in the drug dispensing box reaches the set value, the PLC sends out a command to close the electric ammonia-gas inlet valve; when a liquid level in the drug dispensing box is lower than the low threshold of the set value, the PLC sends out a command to start an electric desalting water inlet valve, and when the liquid level reaches the high threshold of the set value, the PLC sends out a command to close the electric desalting water inlet valve. According to the automatic ammonia-water preparing device disclosed by the invention, manual operation is not needed during the preparation of ammonia water, the concentration of the prepared ammonia water and the liquid level of the drug dispensing box are set by the PLC.
Owner:XIAN THERMAL POWER RES INST CO LTD
Method of operating a high pressure ethylene polymerisation unit
InactiveUS8187546B2Chemical/physical/physico-chemical stationary reactorsChemical recyclingPolymer scienceHigh pressure
The invention relates to a method of operating a high pressure ethylene polymerization unit comprising a tubular reactor, the method characterized in that the electrical conductivity of the aqueous cooling medium is monitored in at least one location. Furthermore, the invention also covers a high pressure ethylene polymerization unit comprising a tubular reactor, the unit characterized in that one or more cooling circuits comprise an electrical conductivity meter. The use of such a polymerization unit is also disclosed.
Owner:TOTAL RES & TECH FELUY
Method for separating taurine in taurine crude product mother solution
ActiveCN106349123ASimple and fast operationLow running costOrganic chemistryOrganic compound preparationElectricitySalt water
The invention discloses a method for separating taurine in a taurine crude product mother solution. A plurality of electrodialysis separation systems connected mutually are utilized to perform concentration and separation of a taurine solution and a salt solution on the taurine crude product mother solution. Each electrodialysis separation system comprises a weak salt tank, a strong salt tank and electrodialysis plants connected between the weak salt tank and strong salt tank, wherein an conductivity meter and a pressure pump are arranged below the weak salt tank and strong salt tank; all levels of electrodialysis plants continuously perform electrodialysis separation on the liquids pumped into the weak salt tank and strong salt tank until the conductivity of the separated weak phase salt water is lower than 5ms / cm; when a liquid chromatograph determines that the taurine / salt mass ratio is greater than 9:1, the weak phase salt water is subjected to reduced pressure concentration to obtain the taurine solution; when the conductivity of the strong phase salt water continuously separated by the electrodialysis plants is higher than 200 ms / cm, the thick phase salt water is subjected to reduced pressure concentration to obtain the salt solution, or else, the separation treatment of all levels of electrodialysis plants is continued. The method is simple to operate, and has the advantages of low operating cost and favorable separating effect.
Owner:江苏德玛膜科技有限公司
Direct-current transmission converter valve cooling water quality online monitoring system and method
ActiveCN105717266AEasy to operateReduce professional requirementsTesting waterCooling towerData acquisition
The invention relates to a direct-current transmission converter valve cooling water quality online monitoring system and method. The direct-current transmission converter valve cooling water quality online monitoring system and method are mainly used for monitoring water quality in a direct-current transmission converter station and related fields thereof to avoid the problem of scale formation of a cooling tower due to low water quality. A water sample to be detected is delivered to a special water quality analysis groove through a sample delivering pump, water quality is detected through instruments such as a thermometer, a conductivity meter, a hydrotimeter and a total alkalinity meter, results are transmitted to a data acquisition analyzer, and are calculated by built-in data analysis software, and states of the water sample are locally displayed or submitted to an upper computer. The system is easy to operate, visual in detection result and high in adaptability to detection environments, not only can be used for static detection, but also can be used for real-time online monitoring. By the method, common workers can rapidly take measures to solve problems conveniently.
Owner:STATE GRID CORP OF CHINA +2
Intelligent terminal water purifier capable of realizing on-line monitoring and printing
InactiveCN102211792AReduce use costReal-time display of water qualityWater/sewage treatmentMultistage water/sewage treatmentMicrocontrollerKey pressing
The invention relates to the technical field of water treatment equipment, in particular to an intelligent terminal water purifier capable of realizing the functions of on-line monitoring and printing. The conventional technology cannot provide an on-line monitoring function, so that a customer replaces a filtering assembly according to the using time blindly, the quality of purified water cannot be guaranteed and the using cost is increased. The intelligent terminal water purifier capable of realizing on-line monitoring comprises a shell which is provided with a raw water inlet and a purified water outlet; the intelligent terminal water purifier is characterized in that: a pipeline which is communicated with the purified water outlet is provided with a conductivity meter connected with a control panel arranged on the shell; a singlechip and a printer are arranged inside the control panel; the control panel is provided with a light-emitting diode (LED) display, a printing window and a control key; and the singlechip is connected with the conductivity meter, the LED display, the control key and the printer respectively. The intelligent terminal water purifier can display the condition of water quality in real time and can print the condition of water quality according to the data of an instruction piece of the customer, and perform analysis.
Owner:CCCC FIRST HIGHWAY CONSULTANTS
Power generator internal cold water quality monitoring control system based on multi-point control
ActiveCN102426466AHigh control precisionImprove securityControlling ratio of multiple fluid flowsChemical variable controlElectronic conductivityElectric generator
The invention relates to an internal cold water quality monitoring control system applicable to a power generator with a stator bar made from red copper. The traditional domestic and overseas internal cold water quality adjusting devices all have problems of large water quality fluctuation and poor safety due to the use of alkali adding systems using a single-point control method. According to the invention, two paths of sampling points are arranged on a water inlet mother pipe and a water return mother pipe of a stator cooling water tank; an online pH meter and an online conductivity meter are mounted on each path of sampling points; the pH meter, the conductivity meter and a stator cooling water pump in the internal cold water system are connected with a PLC (Programmable Logic Controller) controller by signal wires; the PLC controller is embedded with a PID (Proportion Integration Differentiation) control algorithm program applicable to the internal cold water system and based on expert control rules; and the PID control algorithm program is used for processing the collected real-time data according to set rules and controlling the starting and stopping of an alkali adding metering pump according to an operation result. By using the multi-point control method provided by the invention, more complete interlocked protective function is realized, the excessive adding of the alkali liquor is completely eliminated and the safety of the internal cold water system is assured.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
Purity and turbidity separation collection method of printing and dyeing wastewater with conductivity as index
InactiveCN103880240AEasy to installEasy to operateMultistage water/sewage treatmentTurbidityDyeing wastewater
Owner:HOHAI UNIV +1
Apparatus and method for testing conductivity of battery diaphragm
ActiveCN106896271AAccurate measurement and calculationEasy and accurate measurementResistance/reactance/impedenceElectrical resistance and conductanceElectrical connection
The application discloses an apparatus and method for testing the conductivity of a battery diaphragm. The apparatus comprises a conductance cell housing, a conductance cell cover, a diaphragm clamp, and a conductivity meter. The conductance cell housing is in a cylindrical shape with one open end, comprises a first circular conductance electrode piece at the inner surface of the bottom, and a first electrode external interface electrically connected with the first circular conductance electrode piece and on the outer surface. The two electrode external interfaces are used to be connected with the conductivity meter. The conductance cell cover is detachably inserted and fixed to the open end of the conductance cell housing, comprises a second circular conductance electrode piece at the inner surface, and a second electrode external interface electrically connected with the second circular conductance electrode piece and on the outer surface. A vacuum valve port and a liquid injection valve port are arranged on the sidewall of the housing. The diaphragm clamp is an interlocked annular structure, has an outer diameter matching the inner diameter of the conductance cell housing, is in parallel with the two conductance electrode pieces and coaxial with the two conductance electrode pieces. The apparatus is simple in structure and easy to operate and can accurately and accurately measure the conductivity and the resistance of the diaphragm.
Owner:SHENZHEN ZHONGXING NEW MATERIAL TECH CO LTD
Intelligent electrodialysis control system
ActiveCN104096481AReduce dead zoneEvenly distributedGeneral water supply conservationDispersed particle separationElectricityControl system
The invention provides an intelligent electrodialysis control system. The intelligent electrodialysis control system adopts the structure that an electroplate waste liquid storage tank is connected with a first electrical conductivity detector through a first water pump; the first electrical conductivity detector is connected to the waste water inlet of an electrodialytic device; a second electrical conductivity detector is connected to the waste water outlet of the electrodialytic device; a concentrated solution storage tank is connected to a third electrical conductivity detector through a second water pump; the third electrical conductivity detector is also connected to the concentrated solution inlet of the electrodialytic device; a fourth electrical conductivity detector is connected to the concentrated solution outlet of the electrodialytic device; electric conductivity probes and temperature sensors are respectively arranged in the first electrical conductivity detector, the second electrical conductivity detector, the third electrical conductivity detector and the fourth electrical conductivity detector; the electric conductivity probes, the temperature sensors, the first water pump and the second water pump are connected to a PC controller. The intelligent electrodialysis control system is high in dialysis separation rate, increase an effective usable area of a film set, and meanwhile, and is long in service life.
Owner:LIMING VOCATIONAL UNIV
In-situ test device and test method for simulating hyporheic exchange of wild high concentration pollutants
InactiveCN108982595AAddressing the Effects of Simplified Experimental ConditionsReduce disturbanceMaterial resistanceHigh concentrationWater channel
The invention discloses an in-situ test device and a test method for simulating hyporheic exchange of wild high concentration pollutants and belongs to the field of simulating river hyporheic exchange. The device comprises an annular water channel inserted into riverbed bottom mud, a circular driving system, a flow leveling device and a conductivity meter and a temperature probe, wherein the waterchannel is free of a cover plate and a bottom plate, and a porous plate for leveling a water flow; the circular driving system comprises a water pump and a water tank for holding a test liquid, and the test liquid is conveyed from one end of the water channel to the water tank at the other end through the water pump; the flow leveling device comprises a flow leveling grid located below the watertank and a flow leveling bottom plate located below the flow leveling grid. Compared with the prior art, the device avoids interference of human factors to test result in an indoor test, so as to provide a ground for researching the shifting law of sudden high concentration pollutants in wild rivers and lakes, and the device is precise in test result, simple to operate, easy to assemble and high in adaptability.
Owner:HOHAI UNIV
Carbon dioxide electrolytic device and method for electrolyzing carbon dioxide
The invention relates to a carbon dioxide electrolytic device and a method for electrolyzing carbon dioxide. Provided is a carbon dioxide electrolysis device capable of efficiently operating an electrolytic cell while suppressing deterioration of the output of the electrolytic cell for a long period of time. The carbon dioxide electrolytic device (1) includes: an electrolysis cell (2) including acathode (22), an anode (11), a carbon dioxide supply flow path (23), solution supply flow paths (12,21), and a separator (30); a rinse solution source (620) which supplies a rinse solution to at leastone of the solution supply flow paths (12,21) and the carbon dioxide supply flow path (23); a first electric conductivity meter (701) provided on a discharge port side from the electrolysis cell of at least one of the solution supply flow paths (12,21) and the carbon dioxide supply flow path (23); and a rinse solution supply controller (801) which controls stop operation of the rinse solution source (620) according to a measurement result of the first electric conductivity meter (701).
Owner:KK TOSHIBA
Device and method for rapidly detecting nutrient releasing rate of controlled-release fertilizer based on electric conductivity method
InactiveCN105116021AAutomatic conductivity data recordingEasy to operateMaterial resistanceSoil scienceControl system
The invention belongs to the technical field of a test for detecting the nutrient releasing rate of a controlled-release fertilizer, relates to a device and method for rapidly detecting the nutrient releasing rate of the controlled-release fertilizer based on an electric conductivity method, and particularly relates to a device and method for rapidly detecting the still water dissolution rate and the accumulation releasing rate of the controlled-release fertilizer based on the electric conductivity method. The device comprises a bracket, a water feeding device, a glass container, a digital display electric conductivity instrument, an electronic stirrer, a PCL control system for controlling detection steps and the like. With the adoption of the special device, an uneven concentration distribution phenomenon caused by external temperature fluctuation and long-time standing of a solution to be detected is avoided; and the detected electric conductivity value of a nutrient solution is relatively reliable and accurate, and meanwhile, the operation time is greatly shortened.
Owner:SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
Sodium hypochlorite preparation system capable of being controlled and debugged remotely based on ARM single chip microcomputer and working method thereof
ActiveCN108037697AReal-time monitoring of on-site operationWith remote diagnosis and debugging functionProgramme controlComputer controlMicrocontrollerElectrolysis
The invention relates to a sodium hypochlorite preparation system capable of being controlled and debugged remotely based on an ARM single chip microcomputer and a working method thereof. The sodium hypochlorite preparation system comprises an ARM single chip microcomputer, a first drive circuit, a second drive circuit, an analog signal processing circuit, an electrolysis power supply, a concentrated salt pump, a softened water regulating valve, a softened water flow module, an operation indication module, an electrical conductivity meter, an alarm indication module, a 4G module, an HMI moduleand a wireless data transmission module. The sodium hypochlorite preparation system has a remote diagnosing and debugging function. Warning and alarm can be issued for the key parameters of system operation, so that users can find safety risks early to avoid loss caused by system device aging. Users can be remotely notified of corresponding alarm and handle the alarm, and the parameters of fieldoperation can also be modified and optimized remotely. By using the Internet-of-things technology, manufacturers and users can have a real-time understanding of the field operation situation and dealwith an abnormal situation in time.
Owner:ENERGY RES INST OF SHANDONG ACAD OF SCI +1
System for removing heat-stable salt in organic amine liquid and method
PendingCN110721553AEmission reductionEnhanced repeatable lifeGas treatmentGeneral water supply conservationEnvironmental engineeringLiquid circulation
The invention relates to the field of purification of organic amine liquid, and discloses a system for removing a heat-stable salt in organic amine liquid and a method for treating the organic amine liquid by adopting the system. The system comprises an organic amine liquid storage device, an electrode liquid storage device, a desalting water storage device and a membrane stack, wherein the membrane stack communicates with the organic amine liquid storage device, the electrode liquid storage device and the desalting water storage device separately, and an organic amine liquid circulation loop,an electrode liquid circulation loop and a desalting water circulation loop are formed separately, the system further comprises conductivity meters and a control center, and the control center is used for receiving conductivity signals from the conductivity meters, and for adjusting circulation flows of the organic amine liquid circulation loop and the desalting water circulation loop, reuse of the organic amine liquid and discharge of waste liquid according to the conductivity signals of the conductivity meters. When the organic amine liquid is treated by the system, anions and cations in the amine liquid can be removed synchronously, so that consumption of alkali liquid and discharge of the waste liquid are reduced.
Owner:BEIJING SIJIANTONG TECH&DEV
RH-MFB (Rockwell Hardness-Medial Forebrain Bundle) metallurgy reaction simulation test device
The invention provides an RH-MFB (Rockwell Hardness-Medial Forebrain Bundle) metallurgy reaction simulation test device which comprises an RH (Rockwell Hardness) furnace vacuum chamber, a steel ladle, a control electric cabinet and a gas supply device, wherein an oxygen lance is connected at the upper part of the RH furnace vacuum chamber; a vacuum meter and a vacuum pump are arranged on a upper pipeline at the RH furnace vacuum chamber; an elevating pipe and a descending pipe are arranged below the RH furnace vacuum chamber respectively; a second alternative current motor drags one end of a screw binding device to be connected to the bottom of the steel ladle, and the other end of the screw binding device is connected to the control electric cabinet; a second electrode and a acidity meter are dipped into the liquid in the steel ladle; the second electrode is connected with a second conductivity ratio meter; the gas supply device comprises an air storage tank and a CO2 storage tank; the input pipeline of the air storage tank is connected with an air compressor; and a second quality flow controller of the output pipeline of the CO2 gas storage tank is connected with the oxygen lance. According to the RH-MFB metallurgy reaction simulation test device, the influence of different operation parameters and production conditions to the circular flowing property of the steel liquid in the RH steel ladle, the mixing property of a metallurgy reactor and the mass transfer property can be researched; and the device can also be used for education.
Owner:NORTHEASTERN UNIV
Non-point source pollution control-based arterial drainage water quality regulation and control system and arterial drainage water quality regulation and control method
ActiveCN104234171ASimple structureEasy to implementSewerage structuresSewage drainingControl systemPollutant flux
The invention relates to a non-point source pollution control-based arterial drainage water quality regulation and control system and an arterial drainage water quality regulation and control method. The system comprises an arterial drainage which is divided into a plurality of control sections, a controller and a plurality of switching wells, wherein each control section has a most unfavorable control point provided with a liquid level instrument; the arterial drainage is provided with a plurality of water outlet pipes; all the switching wells are respectively communicated with the water outlet pipes in a way of one-to-one correspondence; each switching well is provided with a water inlet pipe and an overflow pipe, and is internally provided with a turbidity meter, a conductivity meter and an electric flashboard; each water inlet pipe is provided with a Doppler ultrasonic flow meter; the liquid level instruments, the turbidity meters, the conductivity meters, the electric flashboards and the Doppler ultrasonic flow meters are respectively connected with the controller. The system is simple in structure, convenient in implementation and low in engineering cost. According to the arterial drainage water quality regulation and control method, the system is utilized to calculate the flux of pollutant in the switching wells, and regulation and control are performed according to the principle that water in the switching wells with high flux of pollutant firstly enters the arterial drainage firstly and water in the switching wells with low flux of pollutant waits, so that the double-staggering peak adjustment of water quality and water quantity of the arterial drainage can be realized, and risk of waterlogging is reduced.
Owner:CHONGQING UNIV
Electric boiler water chemical treatment method
InactiveCN110526373AIncreased water conductivityReduce corrosionWater treatment parameter controlSpecific water treatment objectivesChemical treatmentSample water
The invention provides an electric boiler water chemical treatment method. The electric boiler water chemical treatment method comprises the following steps: weighing trisodium phosphate and disodiumhydrogen phosphate separately, adding the trisodium phosphate and the disodium hydrogen phosphate into a metering box, adding desalted water, preparing a medicament solution added into the electric boiler water, starting a dosing pump when the electric boiler starts and adding the medicaments; and sampling the electric boiler water through a centralized sampling rack, setting the temperature of awater sample, detecting the pH value and the conductivity of the boiler water by a pH meter and a conductivity instrument correspondingly, and detecting the iron content of the boiler water by an atomic absorption instrument, wherein sampling and analysis are conducted for one time every day in the operation period of the electric boiler, the pH value and the conductivity of the boiler water are measured, and the conductivity of the electric boiler water maintains a high level while the pH value meets the requirement. The electric boiler water chemical treatment method has the characteristicsof meeting the designed chemical treatment requirement and guaranteeing safe, economic and stable operation of the electric boiler.
Owner:HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD
Chaotic composite stirring system and stirring method thereof
ActiveCN108499465AExtended service lifeRealize all-round eccentric mixingRotary stirring mixersTransportation and packagingLaser transmitterControl system
The invention relates to a chaotic composite stirring system and a stirring method thereof, and belongs to the technical field of mechanical stirring equipment. The chaotic composite stirring system comprises a chaotic composite stirring device and a monitoring control system, wherein the chaotic composite stirring device comprises a stirring tank, a stirring component, a driving device, a transmission device, a top-blown rotational flow spray gun, a side-blown rotational flow spray gun, a bottom-blown rotational flow spray gun, an air inlet pipe I, an air inlet pipe II and an air inlet pipe III; the monitoring control system comprises a high-speed camera, a laser transmitter, a processor and an electrical conductivity meter. According to the chaotic composite stirring system disclosed bythe invention, combination of mechanical stirring and rotational flow gas stirring in variable-frequency flow is adopted, the area of a chaotic mixing zone can be strengthened by freely changing an eccentricity ratio of the stirring tank, the immersion depth of a stirring shaft and a deviation angle, the gas spray quantities of rotational flow spray guns can be subjected to variable-frequency regulation in real time and can be in periodic pulsation change, the chaotic composite stirring device is enabled to realize chaotic mixing within an extremely short time under low Reynolds number flow, and the mixing efficiency and the heat and mass transfer speed of fluid materials are improved to a large extent.
Owner:KUNMING UNIV OF SCI & TECH
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