30results about How to "Real-time pH monitoring" patented technology

The invention discloses a real-time monitoring sensor for durability of concrete structures. The real-time monitoring sensor comprises a sensor shell, and further comprises a reference electrode, a rebar electrode, an auxiliary electrode, a chlorion probe, a pH probe and a concrete resistivity probe. The auxiliary electrode is laid on the upper surface of the shell, at least parts of the reference electrode, the rebar electrode, the chlorion probe, the pH probe and the concrete resistivity monitoring probe are exposed out of the upper surface of the sensor shell to serve as detecting ends, and the other ends are connected with copper cables which penetrate through the sensor shell from top to bottom and stretch out of the shell. According to the real-time monitoring sensor, not only corrosion rate, chlorion concentration and pH of rebar, but also concrete resistivity can be monitored in real time; further, system resistance can be compensated during the monitoring of rebar corrosion current density, and corrosion rate of rebar can be monitored more accurately by the monitoring of concrete resistance.

The invention provides a method for ecologically breeding lobsters in ponds or paddy fields in a high-density manner. The method includes steps of 1, carrying out site selection and construction; 2, setting water inlet and drainage; 3, mounting escape preventive facilities of lobster ponds; 4, arranging required equipment; 5, carrying out disinfection treatment on the lobster ponds; 6, selecting aquatic plants for the lobster ponds; 7, selecting matched aquatic creatures in the lobster ponds; 8, selecting lobster seeds; 9, meeting the water quality requirements; 10, feeding feed; 11, selectingmedicines to be used; 12, managing the lobster ponds; 13, determining finished product capturing time nodes. The method has the advantages that the method is in circulating running water lobster farming modes, stable and diversified ecological breeding environments are established in the paddy fields or the ponds and comprise the aquatic plants, algae and the like, the importance is attached to simultaneous culture on the aquatic plants and phytoplankton, the attention is paid to culture on beneficial bacteria in water bodies, and accordingly the cushion capacity of the water bodies can be improved; the method is simple and feasible, is accurate in operation and applicable to duplication and popularization on diversified scales, and can be easily and effectively managed.

The invention discloses a device for repairing a concrete structure damaged by salt through two-step process, including a steel bar that acts as a cathode and is disposed in concrete, an electrolytic tank whose mouth is in seal seal fit with a surface of the concrete, electrolyte disposed in the electrolytic groove, an anode immersed in the electrolyte and a direct current power supply for providing power to the cathode and the anode, wherein the electrolytic groove is provided with an electrolyte inlet, an electrolyte outlet and a pH indicator, a probe of the pH indicator penetrating througha wall of the electrolytic groove and contacting with the electrolyte. The device provided in the invention is capable of timely replacement of electrolyte which is conducive to full discharge of chloride ions, and is capable of real-time monitoring of the ph value of the electrolyte, being applicable to concrete structures of various kinds of shapes; in addition, the device has the advantages ofsimple structure, convenient operation and effective removal of the chloride ions in a concrete protective layer with the removal efficiency achieving about 60%; further, the device can raise the corrosion potential of a corroded steel bar, decrease corrosion rate, realize the repassivation and maximumly repair a concrete structure damaged by salt.

The invention relates to a partitioned multi-stage circulating CO2 trapping and concentrating method based on mass transfer-reaction regulation and control. The method adopts multi-element means such as multi-stage cycle absorption, intelligent multi-factor regulation, pre-washing cooling, inter-stage cooling, post-stage water washing, slurry cleaning, cooling water waste heat utilization, small-particle-size high-density spraying and the like. The method takes low cost, low energy consumption, stability and high efficiency as optimization targets, the generation of secondary pollutants is effectively inhibited while CO2 is efficiently trapped, and high-efficiency trapping, low-energy-consumption desorption and high-purity concentration of CO2 are realized. Aerosol removal is sequentially carried out from top to bottom through multi-stage circulation, the carbon capture efficiency is improved, the absorption rate and rich solution concentration are maintained, and the carbon emission reduction cost is reduced.

The invention discloses an automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants, and belongs to the field of desulfurizing absorption towers. The automatic sampling detection device comprises a buffer tank and a breather pipe, wherein the buffer tank is communicated with an absorption tower through a slurry inlet pipe; a first pH meter, a second pH meter and a pressure difference transmitter, which are obliquely inserted into the tank is arranged on the side wall of the buffer tank; a filter unit is arranged at the inner lower part of thebuffer tank; an overflow pipe is arranged on the upper side wall of the buffer tank; the breather pipe is arranged on one side of the slurry inlet pipe and communicated with the slurry inlet pipe; and a manually operated valve and an electrically operated valve are arranged on the breather pipe. According to the automatic sampling detection device, pH meters of desulfurizing absorption towers aretransformed, so that the measurement precision of the pH meters is improved, the measurement correctness is improved, the desulfurization efficiency is improved, environment-friendly data exceeding is prevented, the maintenance vigor of personnel is saved, abrasion of the pH meters is decreased, and the service life of the pH meters is prolonged.

The invention belongs to the field of smoke gas pretreatment, and particularly relates to a coal-fired flue gas pretreatment system and method. The system comprises a flow rate control device, a reaction accommodating device, a tail gas treatment device and a reaction liquid automatic updating system, wherein the flow rate control device is connected onto a flue; the reaction accommodating deviceis connected behind the flow rate control device; the tail gas treatment device is connected behind the reaction accommodating device; the reaction liquid automatic updating system comprises a reaction liquid updating device and a detection control device for controlling the reaction liquid automatic updating; the reaction liquid updating device comprises a fresh reagent storage bottle, a first peristaltic pump, a second peristaltic pump and a waste liquid storage bottle; the detection control device for controlling the reaction liquid for automatic updating comprises a pH detection instrumentwith a pH probe and a control system; the control system controls the first peristaltic pump and the second peristaltic pump to work at the same time through the indication number of the pH detectioninstrument; the automatic updating on the liquid in the reaction accommodating device is realized. By using the coal-fired flue gas pretreatment system, the real-time updating of the reaction liquidcan be realized, so that the whole tail gas treatment device is in an efficient state.

The invention belongs to the technical field of bioengineering and food, and discloses a device and method for synthesizing diglyceride through a multi-liquid-phase system continuous whole-enzyme method. The device mainly comprises a hydrolysis device and an esterification device, wherein the hydrolysis device is divided into a standing area, a reaction area and a dispersion buffer area from top to bottom; the reaction area and the standing area as well as the reaction area and the dispersion buffer area are separated through baffles, and a plurality of small holes communicated with all the areas are formed in the baffles; the standing area is divided into an upper liquid-phase area, a middle liquid-phase area and a lower liquid-phase area; the upper liquid-phase area is provided with a hydrolysate liquid outlet which is communicated with a sample inlet of the esterification device; fatty acid is directly introduced to synthesize diglyceride by an enzymic method; the middle liquid-phase area is communicated with the reaction area through a return pipe; the lower liquid-phase area is provided with a lower-phase solution sample inlet; an enzyme-containing solution sample inlet is formed in the lower part of the reaction area, and a stirrer is arranged in the reaction area; and an oil sample inlet and a lower-phase solution outlet are formed in the bottom of the dispersion buffer area. The method has the advantages of high repeated utilization rate of raw materials, mild and controllable reaction conditions, continuous production and the like.

The invention provides a tumor sample storage device for the oncology department. The device comprises a storage box; one side of the storage box is connected with a box door; a rotating shaft is connected between one side of the storage box and the box door; the inner side of the box door is fixedly connected with a sealing gasket; the outer side of the box door is fixedly connected with a door handle; a display screen is fixedly connected to the position, located on one side of the door handle, of the outer side of the box door; a circulating refrigeration device is connected to the bottom of the inner surface of the storage box; a condensation pipe is connected to the top of the circulating refrigeration device; a lamp holder is fixedly connected to the top of the inner surface of the storage box; and a bulb is connected to the bottom of the lamp holder. According to the tumor sample storage device for the oncology department provided by the invention, by arranging the circulating refrigeration device, liquid nitrogen in the storage box can be conveyed into the condensation pipe through a liquid pump, so that the interior of the storage box is continuously cooled, and the storage time of tumor samples can be effectively prolonged.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a system and a method for synthesizing rubber scorch retarder CTP. The system provided by the invention comprises a conveying pipeline for cyclohexyl sulfenyl chloride and catalyst mixed liquid, a conveying pipeline for phthalimide sodium salt and catalyst mixed liquid, and a micro-reaction device, wherein the micro-reaction device is respectively connected with the material outlet of the conveying pipeline for cyclohexyl sulfenyl chloride and catalyst mixed liquid and the material outlet ofthe conveying pipeline for phthalimide sodium salt and catalyst mixed liquid; the micro-reaction device is a microchannel reactor, a high-shear reactor or a pipe-type reactor. According to the systemprovided by the invention, liquid and liquid two-phase liquid is used for being in full contact in the micro-reaction device to react to synthesize the rubber scorch retarder CTP, the uninterrupted reaction of the CTP synthesis is realized, and the production efficiency and the reaction yield of the synthesized CTP can be greatly improved. Meanwhile, the purity and the quality stability of the product are improved. the system has a good application prospect and can generate considerable economic benefits and social benefits.

The invention discloses an intelligent cleaning, sterilizing and anti-browning device for fresh-cut fruits and vegetables. The anti-browning device comprises a box body, an electrolysis unit, an ultrasonic unit and an ultrasonic generator; the electrolysis unit, the ultrasonic unit and the ultrasonic generator are all arranged in the box body, the electrolysis unit is connected with a water source and the ultrasonic unit, and the ultrasonic unit is also connected with an ultrasonic generator; the electrolysis unit can produce subacid electrolyzed water required by cleaning and sterilization and provide the subacid electrolyzed water for the ultrasonic unit, the ultrasonic unit can perform ultrasonic cleaning on fresh-cut fruits and vegetables, and the ultrasonic generator can generate ultrasonic waves and provide the ultrasonic waves for the ultrasonic unit. The device provided by the invention solves the problems of poor cleaning, sterilizing and anti-browning effects of fresh-cut fruits and vegetables, complicated operation, unstable effective concentration and loud ultrasonic noise; cleaning, sterilization and browning prevention of the fresh-cut fruits and vegetables can be integrally achieved, the storage and preservation technical process of the fresh-cut fruits and vegetables is simplified, and the shelf life of the fresh-cut fruits and vegetables is prolonged.

The invention provides an ammonia recycling method and a system in APT production process. The ammonia recycling method comprises following steps: 1, APT crystallization steam is discharged using a centrifugation blower fan, is introduced into a rectifying tower for rectification and condensation of ammonia tail gas to remove most water, and is introduced into a heat exchanger; 2, a three stage solution obtained via ion exchange is directly used for preparing a desorption agent, the rest ammonia nitrogen wastewater is pumped into a stirring tank, an alkali is added for ammonia activation, andgenerated ammonia tail gas is introduced into the heat exchanger; wastewater obtained via ammonia activation is pumped into an air stripping tower, and ammonia tail gas obtained via air stripping is introduced into the heat exchanger; when the ammonia-nitrogen value of obtained air stripping wastewater is detected to be qualified, discharging through a branch pipe is carried out, otherwise, the wastewater is pumped into the air stripping tower for air stripping; and 3, the temperature of the ammonia tail gas is reduced to be lower than 45 DEG C after treatment using the heat exchanger, the ammonia tail gas is introduced into a hydrochloric acid absorbing tower for circulating absorption, and an obtained solution is sent back to the main treatment stream directly for preparation of the desorption agent. The ammonia recycling method and the system are used for comprehensive treatment of ammonia nitrogen wastewater waste gas obtained in tungsten smelting, waste is changed into valuables,the method flow is simple, operation is convenient, the method is easy to control, and cost is low.

The invention provides a detection and absorption device for SF6. SF6 enters a closed tank of a mineral oil content measuring unit and filtered by a filter membrane, and a product is discharged into an SF6 acidic material absorption unit; a motor controls an injector to inject a CCl4 solution into the closed tank, CCl4 mist spray is formed by a first atomizer, mineral oil in the filter membrane is eluted, an eluent is discharged into a detection tank, elution is stopped when content change of the mineral oil in the eluent tends to be stable, and a liquid in the detection tank is subjected to volume fixing with the CCl4 solution; after the volume fixing is finished, detection work is completed with an infrared light source and an infrared detector; for SF6 discharged from the closed tank, SF6 acidic materials make sufficient contact with an NaOH solution and are absorbed completely by aid of an NaOH solution circulating module and a gas circulating module assisted by a second atomizer and a gas spray nozzle. The detection and absorption device can measure the content of the mineral oil in SF6 accurately and sufficiently absorb the acidic materials in SF6 and is excellent in working performance.

The invention discloses an anti-displacement intelligent floating bed, an ecological floating island, a system and a working method, and belongs to the technical field of floating beds, the anti-displacement intelligent floating bed is characterized in that the anti-displacement intelligent floating bed at least comprises a floating bed body of a circular truncated cone hollow structure, a solar charging device is arranged on the upper surface of the floating bed body, and an indicator lamp is arranged at the top end of the solar charging device; a balance connecting plate is connected with the lower surface of the floating bed body; lock holes are formed in the periphery of the balance connecting plate; a power assembly is mounted on the lower surface of the balance connecting plate; a PLC module is arranged in an inner cavity of the floating bed body, and the GPS module is used for positioning the floating bed; and a pH value monitoring unit is provided; wherein a power supply output terminal of the solar charging device is electrically connected with power supply terminals of the PLC module, the indicating lamp, the power assembly, the GPS module and the pH value monitoring unit respectively. The floating island counteracts displacement caused by water flow and stormy waves by controlling the power assembly, and the problem that a floating island fixed without external force is very prone to displacement is solved.

The invention discloses a visual pH response COFs material based on a methoxy side chain as well as a preparation method and application of the visual pH response COFs material, wherein an organic covalent material is prepared from a monomer material with a methoxy group, the material presents different colors in aqueous solutions with different pH values, the color change range is changed from yellow to black, and the material is relatively obvious and intuitive. Meanwhile, the material is wide in pH indication range, and effective indication can be achieved within the pH range of 0-7. The visual pH response COFs material based on the methoxyl side chain prepared by the invention is beneficial to development and research of a series of COFs based on the pH response of the methoxyl side chain (-OMe) side chain in theoretical research; in practical application, the pH test paper capable of being regenerated and recycled can be prepared, or the pH test paper can be added into a system for real-time pH detection. The material is intuitive and rapid in color response, wide in color changing range and capable of being recycled and reused, and has a good application prospect.

A detection assembly, a chemical dosing pump, a chemical box, a liquid inlet pipeline, a liquid return pipeline, a chemical dosing pipeline and a PLC control assembly in electric control connection with the chemical dosing pump and the detection assembly are integrated in the movable automatic chemical dosing device. Two ends of the dosing pump are respectively connected with the agent box and the dosing pipeline, and the dosing pipeline is communicated with the membrane unit so as to realize dosing of the agent into the membrane unit; the two ends of the detection assembly are connected with the liquid inlet pipeline and the liquid return pipeline respectively, the liquid inlet pipeline and the liquid return pipeline are both communicated with the membrane unit, the detection assembly is used for detecting the pH value of a cleaning solution in the membrane unit in real time and transmitting a numerical signal to the PLC control assembly, and the PLC control assembly is used for controlling starting and stopping of the dosing pump so as to achieve automatic dosing. The invention further discloses a control method of the device. The device has the advantages of being compact in structure, easy to operate, high in automation degree and the like, the concentration of the cleaning solution is monitored in real time, chemicals are automatically added, and the concentration of the cleaning solution is controlled within a preset range all the time.

The invention discloses an intelligent flower cultivation and maintenance system, and relates to the field of intelligent control equipment protection. The system comprises a control module, a watering module, a data collecting module and an air humidifier; the data collecting module is connected with the control module and used for collecting flower growth data and transmitting the collected flower growth data to the control module; the watering module is connected with the control module and used for receiving a watering signal emitted by the control module and watering soil; the air humidifier is connected with the control module and used for receiving a humidifying signal emitted by the control module and humidifying air so as to ensure that flowers are located under proper soil humidity and air humidity all the time, and flower cultivation and maintenance are more convenient and intelligent.

The invention discloses a super-leaching device and method. The device comprises super-leaching cavities, activating structures, ventilation structures, a temperature control structure and a control structure, wherein the super-leaching cavities comprise outer sleeves and inner sleeves, sectional type hollow cavities are formed between the outer sleeves and the inner sleeves, end covers are arranged at two ends of the outer sleeves and two ends of the inner sleeves correspondingly, and the end covers are provided with feeding pipes, lining plates, filtering screens, discharging pipes and medium discharging ports correspondingly; the activating structures comprise shafts, shaft power input structures, pin rods and activation mediums, the ventilation structures comprise air inlet flow metersand ventilation pipelines, the temperature control structure comprises a circulation system composed of circulating water pipelines, and the control structure comprises a pH meter / potentiometer, an oxygen dissolving instrument, a temperature measuring instrument, a pressure gauge and a shaft rotating speed variable-frequency controller; and the invention further provides a super-leaching method.According to the device and the method, wrapping of valuable metals inside minerals can be broken so that the valuable metals can be sufficiently exposed; and meanwhile, the problems that gas mass transfer in the super-leaching device is not uniform, fluctuation of a solution oxidation reduction potential value and a pH value is large, the valuable metal leaching efficiency is low, and the discharging is difficult are solved.

The invention discloses a deodorizing device for acid and alkaline gas from a reaction kettle. The deodorizing device comprises the reaction kettle, a draft fan, a deodorizing tank and an online pH monitor, wherein the deodorizing tank comprises a chemical spraying tank and an adsorption tank; a buffer solution storage tank is mounted at the top end of the chemical spraying tank; a water inlet anda chemical inlet are formed in the top end of the buffer solution storage tank; a matching cap is mounted at the chemical inlet; a pH measuring pipe is arranged on the cap; strip-shaped openings parallel to the separating plate are formed in the top of the adsorption tank; adsorption screens are vertically placed at the strip-shaped openings; an gas exhausting port and a water draining port are formed in one surface, parallel to the separating plate, of the adsorption tank; a transmitter placing tube is vertically arranged at the top end of the water draining port; a transmitter is placed inthe transmitter placing tube; and the transmitter is used for transmitting a signal to the online pH monitor. The deodorizing device performs gas condensation, acid and alkaline neutralization and adsorptive deodorization on the acid and alkaline gas from the reaction kettle, is applicable to deodorization of the acid and alkaline gas, and reduces emission of the acid and alkaline gas.

The invention discloses a planting method of prune seedlings. The planting method comprises the following steps: step 1, selecting planting time; 2, shaping the planting soil; step 3, digging holes; step 4, soil treatment: (1) filling the plant pits with nutrient soil with the thickness of about 20cm; (2) pulling a moisture test card from the plant pit, and monitoring the soil moisture content in the plant pit in real time; (3) pulling a pH test card from the interior of the plant pit, and monitoring the pH value of soil in the plant pit in real time; 5, prune nursery stock planting; step 6, irrigation and drainage; 7, prune nursery stock maintenance. A pH test card is pulled from a plant pit, the pH value of soil in the plant pit is monitored in real time, the survival rate of nursery stocks can be obviously increased, the growth condition of plants can be enhanced, and by improving the physical and chemical properties of the soil, increasing the organic matter content of the soil and adjusting the temperature and humidity of the soil, the yield of the plants is improved. The survival rate of seedlings is effectively improved; and the growth condition of plants is enhanced.

The invention provides an apparatus for detecting the iron ion stabilization capacity of an ion stabilizer. The apparatus comprises a reaction chamber, a standard solution chamber and an auxiliary liquid-adding chamber, wherein the lower end of the standard solution chamber is communicated to the upper end of the reaction chamber through a left conduction pipe, the lower end of the auxiliary liquid-adding chamber is communicated to the upper end of the reaction chamber through a right conduction pipe, the left conduction pipe is provided with a left valve, the right conduction pipe is providedwith a right valve, the left conduction pipe and the right conduction pipe are respectively provided with a flow meter, the reaction chamber is connected to a pH system, and is provided with a stirrer, the stirrer comprises a motor and a stirring paddle, the stirring paddle is placed inside the reaction chamber, the motor is placed outside the reaction chamber, the motor is connected to the stirring paddle in the reaction chamber through a rotation shaft, and the reaction chamber is installed in a temperature control system. According to the present invention, with the apparatus, the experimental operation steps are substantially simplified, the experimental conditions are improved, the experiment process is precisely controlled, the accuracy of the detection is improved, the experimentalprocess is smooth, and the operation is simple.

The invention relates to a layered water ecology sampling monitoring system for lakes and reservoirs, and an application of the layered water ecology sampling monitoring system. The system comprises afixed device, a sampling device, a sensing device, and an operation display device. The sampling device is disposed inside the fixed device, and the center of the fixed device is fixedly provided with the sensing device. Moreover, the sensing device is located above the sampling device, and the operation displaying device is located at one side of the fixed device, and is connected with the sensing device. The system provided by the invention can precisely calculate the depth of a water sampling device through a pressure sensor, monitors the water temperature, dissolved oxygen, conductivity and pH value in real time through various sensors, provides accurate data for the research of the water ecology conditions of deep lakes and reservoirs at different depths, is high in accuracy, achieves the synchronous sampling and monitoring, and is convenient to operate.

The invention relates to an anaerobic digestion device for kitchen waste, which relates to the technical field of solid waste disposal. The anaerobic digestion device includes a reactor, an upper portion of the side wall of the reactor is connected to a feed tube for communicating the bottom of the reactor. The upper part of the reactor is provided with a tapered gas collecting hood and a three-phase separator, and the three-phase separator transports the separated wastewater and biogas to the upper water outlet and a biogas pipe to discharge out of the reactor. The anaerobic digestion deviceincludes a stirrer temperature controller, a slaked lime addition funnel and a pH detector. A stirrer is vertically fixed in the center of the reactor, and an agitating blade is disposed at the lowerportion of the stirrer. The temperature controller is placed on the bottom plate of the reactor, and the slaked lime addition funnel and pH detector are connected to the outer wall of the reactor. Theanaerobic digestion device can monitor the pH value in the reactor in real time and regulate the pH value, and controls the temperature in the reactor in real time, at the same time, the reactants and the sludge can be thoroughly mixed, so that the optimal conditions for anaerobic digestion are always maintained in the reactor.

The present invention discloses a high-efficiency carbon or nitrogen supply device for microalgae autotrophy. The high-efficiency carbon or nitrogen supply device comprises a reaction chamber, the reaction chamber has a certain accommodating cavity, the reaction chamber is provided with an anion membrane and a bipolar membrane, three independent sub-chambers are formed in the reaction chamber, thesub-chamber between the anion membrane and the bipolar membrane is a microalgae chamber, microalgae to be cultivated and a culture solution are placed in the microalgae chamber, the sub-chamber on the other side of the anion membrane is an cathode chamber, a bicarbonate solution or a nitrate solution is added to the cathode chamber, only anions are allowed to enter the microalgae chamber from thecathode chamber, the sub-chamber on the other side of the polar membrane is an anode chamber, an anode surface of the bipolar membrane faces the microalgae chamber, a sulfate solution is added to theanode chamber, and only cations are allowed to enter the microalgae chamber from the anode chamber side and anions from the microalgae chamber side enter the anode chamber; and inert electrodes are respectively arranged in the cathode chamber and the anode chamber and are also connected with an external power supply. The high-efficiency carbon or nitrogen supply device can effectively isolate thecations outside the microalgae chamber and exclusively supply the anions (HCO3- / NO3-) for the microalgae autotrophy.

The invention discloses a high-efficiency carbon or nitrogen supply device for microalgae autotrophy, comprising: a reaction chamber, which has a certain accommodation cavity, and an anion membrane and a bipolar membrane are arranged in the reaction chamber to form three independent The sub-chamber, wherein the sub-chamber between the anion membrane and the bipolar membrane is the microalgae chamber, in which the microalgae and the culture solution to be raised are placed, and the subchamber on the other side of the anion membrane is the cathode chamber, and in the cathode chamber Adding bicarbonate solution or nitrate solution only allows anions to enter the microalgae chamber from the cathode chamber, the other side of the bipolar membrane is the anode chamber, the anode of the bipolar membrane faces the microalgae chamber, and the Sulfate solution only allows cations to enter the microalgae chamber from the anode chamber side, and anions enter the anode chamber from the microalgae chamber side; inert electrodes are respectively arranged in the cathode chamber and the anode chamber, and are connected to an external power supply. The present invention can effectively isolate cations outside the microalgae and supply anions (HCO 3 ‑ / NO 3 ‑ ) are autotrophic in microalgae.

The invention discloses an intelligent fish tank based on Internet of Things. The intelligent fish tank based on Internet of Things comprises a control unit and a multifunctional fish tank unit, and the control unit is used for controlling the multifunctional fish tank unit; the multifunctional fish tank unit comprises a container, an upper limiting liquid level sensor, a lower limiting liquid level sensor, a temperature sensor, a pH value sensor, a heating rod, a refrigeration piece, an oxygen pump, a water inlet pump, a water changing pump, a water inlet pipe, a water outlet pipe and a feeder, the oxygen pump, the refrigeration piece, the water inlet pump, the water changing pump, the heating rod, the temperature sensor and the pH value sensor are arranged at a bottom part of the container, the water inlet pump is connected with the water inlet pipe, the water changing pump is connected with the water outlet pipe, the lower limiting liquid level sensor is arranged on a side wall close to the bottom part of the container, the upper limiting liquid level sensor and the feeder are arranged on a side wall close to a top part of the container, and a control unit is connected with an intelligent terminal and / or a cloud. The intelligent fish tank realizes manual control, remote control and automatic control of fish culture and has good practicability and convenience.

The invention discloses a multifunctional experimental device for gas-liquid reaction. The multifunctional experimental device comprises a steel-wood experimental platform, a solution preparation tank, a stirring reaction tank, a control display system, a feeding pump, a gas-liquid mixer, a pipeline gas-liquid mixing reaction module, a liquid flowmeter, a gas flowmeter, a filtering device and a tail gas collecting pipe. The invention further discloses a using method of the device. The device integrates the functions of preparation, reaction, stirring, filtration and the like, the temperature, the liquid flow and the gas flow can be adjusted in real time, the temperature, the pH value and the reaction potential value can be monitored and displayed in real time, reliable data is provided for an experiment, part of equipment is made of a glass material, and an experimenter can master the reaction state of a solution in real time. According to the device, gas-liquid mixing reaction is safe and efficient, tail gas can be absorbed, recycling is achieved, good economic and environmental benefits are achieved, modular design is adopted in the device, the integration degree is high, and operation is easy and feasible.

The invention discloses a device for repairing a concrete structure damaged by salt through two-step process, including a steel bar that acts as a cathode and is disposed in concrete, an electrolytic tank whose mouth is in seal seal fit with a surface of the concrete, electrolyte disposed in the electrolytic groove, an anode immersed in the electrolyte and a direct current power supply for providing power to the cathode and the anode, wherein the electrolytic groove is provided with an electrolyte inlet, an electrolyte outlet and a pH indicator, a probe of the pH indicator penetrating througha wall of the electrolytic groove and contacting with the electrolyte. The device provided in the invention is capable of timely replacement of electrolyte which is conducive to full discharge of chloride ions, and is capable of real-time monitoring of the ph value of the electrolyte, being applicable to concrete structures of various kinds of shapes; in addition, the device has the advantages ofsimple structure, convenient operation and effective removal of the chloride ions in a concrete protective layer with the removal efficiency achieving about 60%; further, the device can raise the corrosion potential of a corroded steel bar, decrease corrosion rate, realize the repassivation and maximumly repair a concrete structure damaged by salt.

The invention belongs to the field of bioengineering and food technology, and discloses a device and method for continuously enzymatically synthesizing diglycerides in a multi-liquid phase system, mainly including a hydrolysis device and an esterification device, wherein the hydrolysis device is divided into two parts from top to bottom: Quiet zone, reaction zone and dispersion buffer. The reaction zone and the static zone and between the reaction zone and the dispersion buffer zone are separated by baffles, and there are a number of small holes connecting each zone on the baffle; There is a liquid outlet for hydrolyzate, which is connected with the inlet of the esterification device, and the fatty acid is directly passed through to synthesize diglyceride by enzymatic method. The middle liquid phase area is connected with the reaction area through the return pipe, and the lower liquid phase area is There is a lower-phase solution inlet; the lower part of the reaction zone is equipped with an enzyme-containing solution inlet, and there is a stirrer inside; the bottom of the dispersion buffer is equipped with an oil sample inlet and a lower-phase solution outlet. The invention has the advantages of high recycling rate of raw materials, mild and controllable reaction conditions, continuous production and the like.