155 results about "Dissolved hydrogen" patented technology

The invention discloses an alkaline electrolysis water hydrogen production system and method capable of deeply reducing the hydrogen content in oxygen in multiple ways, a hydrogen side flash tank is arranged in the alkaline electrolysis water hydrogen production system, and dissolved hydrogen deep removal is carried out on hydrogen side alkali liquor passing through a gas-liquid separator through the hydrogen side flash tank; a mixed alkali liquor flash tank is arranged in an alkaline electrolysis water hydrogen production system, and deep removal of dissolved oxygen and dissolved hydrogen is carried out on mixed alkali liquor through the mixed alkali liquor flash tank; a hydrogen side pressure adjusting part capable of adjusting the pressure of a cathode chamber is arranged in a hydrogen side gas-liquid separator system, and an oxygen side pressure adjusting part capable of adjusting the pressure of an anode chamber is arranged in an oxygen side gas-liquid separation system, so that the pressure of the anode chamber of the alkaline electrolytic cell is higher than that of the cathode chamber, and the amount of hydrogen entering the anode chamber from the cathode chamber through a diaphragm is reduced; the concentration of hydrogen in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.

The invention discloses a gas-liquid treatment method and device of an alkaline electrolytic water hydrogen production system, a processor and a medium, and relates to the technical field of electrolytic hydrogen production. The method comprises the following steps: acquiring an actual value of the concentration of dissolved-state oxyhydrogen in the oxyhydrogen catalytic reaction unit through a dissolved-state oxyhydrogen monitor; the concentration of dissolved-state hydrogen and oxygen in the hydrogen and oxygen catalytic reaction unit is predicted, and a predicted value is generated; a preset concentration threshold value is obtained, and a closed-loop regulation and control instruction for the electrolyte circulating pump is generated based on the actual value, the predicted value and the preset concentration threshold value; and controlling the electrolyte circulating pump to execute corresponding control operation based on the closed-loop regulation and control instruction. Dissolved hydrogen and oxygen are treated through the hydrogen and oxygen catalytic reaction unit, an actual value is obtained in real time in combination with the dissolved hydrogen and oxygen monitor, then the electrolyte circulating pump is regulated and controlled according to the actual value, a predicted value and a preset concentration threshold value, potential safety hazards are reduced, meanwhile, working condition fluctuation is adapted, and stable gas-liquid treatment is guaranteed.

The present application discloses a malt production method and a method for improving the antioxidant activity of malt, wherein grains are subjected to at least one steeping step, in which the grains are immersed in hydrogen water with a dissolved hydrogen concentration of 0.3 to 1.6 ppm. By using hydrogen rich water in malt production, it is possible to take into account simultaneous improvements to multiple quality indicators at the same time. The positive biological effects of hydrogen rich water are especially significant. The increased content of α-amino nitrogen in the malt brings greater economic benefit to malt producers. Moreover, the colour intensity and turbidity of the malt are significantly reduced, effectively solving the problem of wort often being turbid. The endogenous antioxidant activity of malt, wort and even fermented beverages is increased, as desired by malt producers and the brewing industry. No additional additives are introduced during malt production.

The invention discloses a boiler anti-leakage monitoring and positioning method and system, a product and a medium. The method comprises the following steps: when the dissolved hydrogen concentration variation of two or more monitoring units in a unit time period exceeds a preset rising or falling threshold value and one of the monitoring units periodically fluctuates, controlling to apply instantaneous electric pulse disturbance to all the monitoring units; collecting dissolved hydrogen response change values and capacitance change values before and after the pulse of each monitoring unit, and selecting the unit with the maximum dissolved hydrogen response change value as the unit with the maximum amplitude; and if the capacitance change value of the unit with the maximum amplitude has nonlinear offset or is lower than a threshold value, judging whether the change trend of the unit with the maximum amplitude is consistent with that of other units, and if so, pausing the alarm function of the unit with the maximum amplitude and continuing to monitor other units. By implementing the technical scheme provided by the invention, the accuracy of boiler leakage monitoring and positioning is improved.

The invention discloses a hydrogen-rich water preparation device and a preparation method thereof, and relates to the technical field of hydrogen-rich water preparation, the hydrogen-rich water preparation device comprises a preparation box and a base fixedly connected to the lower surface of the preparation box; the water inlet mechanism is used for filling water flow into the inner cavity of the preparation box, drinking water filtered and purified by the water dispenser can be injected into the inner cavity of the preparation box by arranging the water inlet mechanism, and in the water flow flowing process, hydrogen floating on the top of the preparation box can be brought into the bottom of the preparation box again; therefore, the effect of increasing the dissolution rate of hydrogen in the water flow injection process is achieved; the stirring mechanism is used for discharging hydrogen into water flow in the stirring process, drinking water in an inner cavity of the preparation box can be stirred in the working process by arranging the stirring mechanism, and in the stirring process, through the effect of centrifugal force, in the stirring process, the hydrogen in the water flow is discharged into the water flow. And the effect of fully dissolving the hydrogen in the water is achieved.

The invention discloses a method, a system, a medium and equipment for predicting hydrogen in oxygen of an alkaline electrolysis system, and the method comprises the steps: obtaining a total calculation formula for predicting hydrogen in oxygen of the alkaline electrolysis system based on the contribution of dissolved hydrogen which is not separated by a gas-liquid separator, gaseous hydrogen which is not separated by the gas-liquid separator, electrolytic bath saturation diffusion and electrolytic bath supersaturation diffusion mechanisms to hydrogen in oxygen of the system; according to experimental data of the alkaline electrolysis system under different alkaline liquid circulation flow working conditions, calibrating a to-be-fitted coefficient; according to experimental data of the alkaline electrolysis system under different system pressure working conditions, calibrating a to-be-fitted coefficient; according to experimental data of the alkaline electrolysis system under different working current working conditions, calibrating a to-be-fitted coefficient; according to experimental data of the alkaline electrolysis system under different temperature working conditions, a to-be-fitted coefficient sum is calibrated; and inputting temperature, pressure, alkali liquor circulation flow and current experiment data of the alkaline electrolysis system, and calculating hydrogen in oxygen of the alkaline electrolysis system so as to output system HTO under different operation conditions in real time.

The invention belongs to the technical field of electrolytic antifouling, and particularly relates to an electrolytic antifouling device for a ship seawater pipeline system, which is based on a method for diluting and dissolving hydrogen in seawater, further optimizes composition, and simplifies a main body structure into three parts, namely a seawater pretreatment unit, an electrolysis unit and an electric control unit, the main body structure of the electrolysis unit is an electrolysis cell set formed by connecting a plurality of branch pipe type electrolysis cells in parallel through a water path, the occupied space is effectively reduced, seawater dilution hydrogen is adopted to replace air dilution hydrogen, storage-free direct discharge of electrolyte is achieved, and the electrolysis antifouling device for the ship pipeline system is miniaturized and does not generate free hydrogen. The device can effectively slow down the scaling rate of CaCO3, Mg (OH) 2 and other calcium and magnesium deposition layers generated by the cathode when the electrolysis unit electrolyzes seawater, further effectively reduces the pickling frequency of the electrolytic cell, improves the single continuous operation time, directly dissolves the seawater electrolysis byproduct hydrogen in cooling seawater and discharges the hydrogen out of an outboard pipeline, and eliminates the risk of hydrogen gathering, precipitation and leakage.

A process for producing an aldehyde is disclosed. The process comprises: hydroformylating an olefin to form the aldehyde using a hydroformylation catalyst; recovering an effluent stream comprising the aldehyde, hydrogen and the hydroformylation catalyst; passing the effluent stream to a stripper; contacting the effluent stream with a strip gas in the stripper to produce a stripped effluent stream having a lower hydrogen concentration than the effluent stream; and recovering the stripped effluent stream.

The present application relates to a kind of nano platinum colloids and its preparation method and its application, the average particle size of the nano platinum colloids is 50-100nm, D90 is 100-150nm, D10 is 30-70nm, zeta potential is-25mV to-40mV, pd I is 0.2-0.5, sphericity is 0.85-0.97.The nano platinum colloids prepared by the present application has small particle size, as catalyst has higher catalytic efficiency, can quickly capture hydrogen to occur reaction, is not influenced by hydrogen escape, is used in the detection reagent for determining the dissolved hydrogen concentration in water, reaction rate is fast, titration result is more accurate.

A water treatment device includes an oxidizing substance removal device removing oxidizing substances from water to be treated. The oxidizing substance removal device includes: a hydrogen adder adding hydrogen to the water to be treated; a catalyst tower with a platinum group metal-supported catalyst through which the water to be treated to which hydrogen has been added passes; a control unit that controls an additive amount of hydrogen; and a first meter measuring the dissolved hydrogen concentration in the outlet water of the catalyst tower. A layer height of a packed material in the catalyst tower, including the platinum group metal-supported catalyst, is 10 cm or more, and the control unit performs a first additive amount control that controls the additive amount of hydrogen so that a measured value by the first meter is within a first range.

The present invention discloses a method for producing aldehydes. The method comprises: hydroformylating olefins to form aldehydes using a hydroformylation catalyst; recovering an effluent stream comprising the aldehyde, hydrogen and the hydroformylation catalyst; conveying the effluent stream to a stripping column; contacting the effluent stream with a stripping gas in the stripping column to produce a stripped effluent stream having a lower hydrogen concentration than the effluent stream; and recovering the stripped effluent stream.

The present invention provides an aqueous formulation comprising fullerene, structured water having a three-dimensional helical structure of polygonal water molecules with hollow cavities, dissolved hydrogen, a mineral, and an additive. The formulation provides a stable and biocompatible fullerene, which can be surrounded by micelles. The aqueous formulation has long term stability, thereby maintaining the concentration of hydrogen dissolved in the aqueous formulation over time. Also provided are methods of treating cancer comprising administering to a subject in need thereof an aqueous formulation comprising a fullerene, structured water having a three-dimensional helical structure of polygonal water molecules of hollow cavities, dissolved hydrogen, a mineral, and an additive.

The utility model discloses a healthy water nourishing machine with an electrolytic hydrogen production water and membrane wire hydrogen mixing system. The healthy water nourishing machine comprises a water purifier module, an electrolytic hydrogen production water module and a membrane wire hydrogen mixing module, the alkaline electrolytic bath and the pressure membrane filament gas mixing unit are arranged on the water outlet main channel; the water outlet auxiliary channel conveys water to the membrane wire water tank; the proton membrane electrolytic bath, the membrane filament water tank and the membrane filament water pump are communicated through a membrane filament electrolysis water path; a hydrogen output gas path is arranged at the hydrogen generation end of the proton membrane electrolytic cell; and the hydrogen output gas path is connected with the pressure membrane wire gas mixing unit and can dissolve hydrogen into the water outlet main channel. According to the utility model, the technical bottleneck of the traditional single process is successfully broken through by innovatively integrating electrolytic hydrogen production water and membrane wire hydrogen mixing double systems, the stability of the core physical and chemical indexes of the electrolytic water is ensured by the double-channel shunting waterway design, and the hydrogen content is greatly increased through physical hydrogen mixing, so that healthy water which conforms to the indexes and is sterilized by ultraviolet rays is formed.

The application relates to the technical field of gas-liquid separation, and provides a device and a method for reducing hydrogen content in oxygen by using a multistage gas-liquid separation technology, which comprises a separator, the inner cavity of the separator is sequentially divided into a first separation cavity and a second separation cavity from top to bottom, and the first separation cavity is communicated with the second separation cavity; a gas-liquid cyclone inner part is arranged in the first separation cavity; a strong centrifugal force field generated by the gas-liquid cyclone inner part is used for making micron-sized bubbles in a hydrogen-electrolyte mixture coalesce and separate, and free-state fine bubbles in the hydrogen-electrolyte mixture are efficiently removed; a throttling device is arranged between the first separation cavity and the second separation cavity, over-saturated dissolved hydrogen in hydrogen-rich electrolyte after first separation in the first separation cavity is depressurized through the throttling device, the hydrogen is actively precipitated by using static pressure drop, and separation is completed in the second cavity, so that the purpose of reducing hydrogen content in oxygen is achieved. The two-stage progressive separation structure significantly improves the hydrogen separation efficiency, and reduces the hydrogen content in oxygen to a low level.

A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.

This invention relates to the field of coal mine safety, specifically to a method for predicting the risk of hydrogen sulfide outbursts in coal seams. Currently, manual sampling for hydrogen sulfide gas detection in domestic mines is highly dangerous; furthermore, dissolved hydrogen sulfide is corrosive to mechanical measuring devices, resulting in low efficiency and the need for corrosion protection. This invention first determines the presence of geological water in the coal seam. If geological water is present, a small amount is deacidified and then tested with lead acetate test paper. If no geological water is present, a safe pH range is determined through mathematical statistics. While drilling into the coal seam at the measurement location in the tunneling face or return airway, the borehole flushing fluid is recovered, the pH value is measured, and the average value is calculated and compared with the safe pH range to determine whether there is a risk of hydrogen sulfide outbursts in the coal seam. This invention is highly practical in underground operations, highly safe, simple to operate, low in cost, and provides rapid and timely results, effectively ensuring the safety of underground workers and the safe and efficient production of coal mines.

The present invention relates to a functional composition for activating plant root respiration in soil and a method using the same. The present invention is a technology related to agricultural methods, in which an oxygen generating catalyst composition is prepared by dissolving an inorganic substance selected from the group consisting of aluminum, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tungsten, and a salt form selected from the group consisting of sulfate, chloride, nitrate, acetate, phosphate, fluoride, and a chelating agent, to a concentration of 0.05 to 25 wt% in stored water, and an oxygen generating composition is prepared by dissolving hydrogen peroxide or persulfate to a concentration of 50 wt% or less in stored water, and the A solution and the B solution are used in a C method in which the A solution is diluted to a concentration of 10 ppm to 900 ppm and sprayed, and then the B solution is diluted to a concentration of 25 ppm to 5,000 ppm and sprayed on a crop cultivation site, or in a D method in which the A solution is diluted to a concentration of 10 ppm to 900 ppm and stored in a container (A-1) equipped with a drain line and a discharge device, and the B solution is diluted to a concentration of 25 ppm to 5,000 ppm and stored in a container (B-1) equipped with a drain line and a discharge device, according to the crop cultivation environment, thereby achieving an oxygen agricultural method for crops to achieve high yield cultivation.

The invention belongs to the technical field of functional beverages, and provides hydrogen-oxygen-loaded nano bubble water and a preparation method thereof.The hydrogen-oxygen-loaded nano bubble water comprises water and hydrogen and oxygen nano bubbles suspended in the water, and the particle size of the nano bubbles is smaller than 100 nanometers; the molar ratio of the hydrogen to the oxygen is (1.5-2.5): 1; the concentration of the dissolved hydrogen in the water is 7.7 to 31.7 mg / L; the concentration of dissolved hydrogen in water is larger than or equal to 1.0 ppm, the concentration of dissolved oxygen is larger than or equal to 12 ppm, the bubble stable period is not shorter than 7 days, and the gas loss rate is lower than 10% after sealed storage is conducted for 30 days at the temperature of 25 DEG C. By adopting an innovative preparation process, the generation efficiency and stability of the hydrogen-oxygen nano bubbles are remarkably improved, high-concentration and high-stability hydrogen-oxygen-loaded nano bubble water can be produced on a large scale by accurately controlling the bubble stability, the gas proportion, the temperature and the pressure, and the effect of the hydrogen-oxygen-loaded nano bubble water can be kept for a long time.

The invention provides a coal dust deashing method, and belongs to the technical field of coal cleaning and processing. According to the method, the anthracite is subjected to first acidolysis by adopting hydrochloric acid, so that carbonate minerals and metal oxides such as Fe2O3 and CaO in the anthracite are directionally removed; then destroying a silicate crystal structure in the anthracite by adopting a hydrofluoric acid solution so as to deeply desiliconize; and finally, hydrochloric acid is adopted for second acidolysis, insoluble fluorides such as CaF2 generated in the hydrofluoric acid desiliconization stage are dissolved, efficient deashing of anthracite is achieved, and the ash content of finally obtained deashed coal is smaller than or equal to 0.2 wt%. The method has the advantages of extremely high anthracite ash removal efficiency and low cost, is suitable for efficiently cleaning anthracite to prepare subsequent products, and does not cause secondary pollution.

The utility model discloses a generator stator cooling water dissolved hydrogen measurement water sample backwater device which comprises a middle water storage tank, the top of the middle water storage tank is communicated with a monitoring device through a water inlet pipeline, and the lower end of the middle water storage tank is communicated with a generator stator cooling water tank through a double-pump system; a low-liquid-level sensor, a high-liquid-level sensor and a high-liquid-level sensor are arranged on one side in the middle water storage tank and used for monitoring the liquid level of the middle water storage tank; the device relates to the technical field of measurement water sample recovery, and is simple in structure, easy in function and high in reliability, meanwhile, the measured water sample is directly recovered to a generator stator cooling water tank, the water quality of generator stator cooling water is not affected, leakage and leakage are avoided, water resources are saved, and the device is suitable for popularization and application. Meanwhile, safe operation of generator stator cooling water is guaranteed, and different generator stator cooling water tank forms on site are met.

To provide a hydrogen gas concentration sensor for blood that can safely and easily measure the dissolved hydrogen concentration in blood simply by piercing the rubber stopper of the blood collection tube (blood collection vessel). [Solution] A hydrogen gas concentration sensor is provided in which a container's tubular section is placed inside the needle tube section, and a first electrode piece is provided protruding from this tubular section, for example, the first electrode piece, a second electrode piece and an electrolyte are placed inside the container or tubular section, and when the needle tube section is inserted into the rubber stopper of the blood collection tube, the dissolved hydrogen gas in the blood in the blood collection tube comes into contact with, for example, the first electrode piece and the electrolyte interposed in the gap, thereby measuring the dissolved hydrogen concentration in the blood.

The invention relates to the field of dissolved hydrogen detection, in particular to a dissolved hydrogen content measuring method and device and a computer program product, and the dissolved hydrogen content measuring method comprises the following steps: inserting a test electrode into a solution to be measured; inserting a counter electrode into the electrolyte solution; connecting the to-be-detected solution and the electrolyte solution through a salt bridge; acquiring a potential difference between the test electrode and the counter electrode; and obtaining the dissolved hydrogen content in the solution to be detected according to the potential difference. When the dissolved hydrogen in the to-be-tested solution and the test electrode are spontaneously oxidized, electrons are gathered on the surface of the test electrode, and a potential difference is generated between the test electrode and the counter electrode. At the moment, the potential detection device is arranged between the test electrode and the counter electrode, so that the potential difference between the test electrode and the counter electrode can be detected. The content of dissolved hydrogen in the to-be-tested solution directly affects the number of transferred electrons, and the number of transferred electrons directly affects the potential difference between the test electrode and the counter electrode.

The utility model relates to a hydrogen-rich kettle, and belongs to the technical field of household appliances. The device comprises a base and a separable kettle body, the kettle body and the base are electrically coupled through a coupler, a container with an opening in the upper end and used for containing liquid is arranged in the kettle body, a hydrogen production device and a detection probe for detecting the hydrogen content of the liquid are arranged in the container, and the detection probe is electrically connected with an information display module. The information display module can display corresponding information according to different detected hydrogen contents; a heating device used for heating liquid in the cavity and a water inlet connector communicated with the container are further arranged in the kettle body, the water inlet connector is communicated with a water inlet of the water pump through a pipeline, and a water outlet of the water pump is communicated with a water outlet nozzle of the kettle through a pipeline. According to the water kettle, the dissolved hydrogen content of liquid in the water kettle can be displayed in real time through the detection probe and the information display module, and visual hydrogen content information is provided for a user.

The present invention relates to the field of material corrosion technology, and in particular to a research device and method for the effect of zinc injection in a circuit under controlled hydrogen and oxygen conditions. The research device includes a reactor, a water tank, a dosing box, and a hydrogen source. The reactor inlet is connected to the water tank outlet through a first pipeline; the reactor outlet is connected to the water tank inlet through a second pipeline, and the first pipeline and the second pipeline are respectively provided with sampling valves; and also includes a first hydrogen and oxygen detection structure for detecting the hydrogen and oxygen content in the first pipeline, and a second hydrogen and oxygen detection structure for detecting the hydrogen and oxygen content in the second pipeline. The present application adjusts the one-way waterway in the prior art into a circulating waterway. When in use, the corrosion test is only started after it is detected that the zinc concentration and dissolved hydrogen and oxygen content at the reactor inlet and outlet meet the requirements, thereby being able to accurately control the concentration of the test solution in the reactor and ensure the accuracy of the corrosion test data.

The invention discloses a double-loop water chemical multi-parameter coordinated regulation and control test device for nuclear power material corrosion simulation. The double-loop water chemical multi-parameter coordinated regulation and control test device comprises a low-pressure water chemical pretreatment loop, a high-temperature and high-pressure corrosion simulation loop and a control module, the low-pressure water chemical pretreatment loop is connected with the high-temperature and high-pressure corrosion simulation loop through a pipeline and a valve, so that the test medium regulated and controlled by the low-pressure water chemical pretreatment loop is conveyed to the high-temperature and high-pressure corrosion simulation loop and flows back to the low-pressure water chemical pretreatment loop; the control module is electrically connected with the first monitoring component, the second monitoring component, the dissolved hydrogen / oxygen control unit, the dosing unit and the autoclave heating unit, receives and analyzes the hydrochemical parameter deviation of the low-pressure hydrochemical pretreatment loop and the high-temperature and high-pressure corrosion simulation loop by adopting a PID (Proportion Integration Differentiation) regulation algorithm, and dynamically regulates the working state of the execution unit; therefore, multi-parameter coordinated regulation and control are realized.

The invention discloses an optical fiber-palladium alloy membrane single hydrogen sensor machine control method based on temperature compensation, and relates to the technical field of online monitoring of power equipment. A hydrogen-sensitive sensing unit and a temperature compensation module are arranged in the sensor. The hydrogen-sensitive sensing unit and the temperature compensation module are arranged in parallel, are completely immersed in insulating oil, are in contact with oil flow and are used for monitoring dissolved hydrogen in situ in real time; the hydrogen-sensitive sensing unit adopts an optical fiber structure of which the side wall is plated with a palladium alloy nano-film, and is used for sensing the concentration of hydrogen dissolved in oil and generating corresponding optical signal change; the temperature compensation module adopts an optical fiber structure inert to hydrogen and is used for synchronously measuring the oil temperature of the position where the probe is located. By means of the structure and the matched control method, in-situ and real-time monitoring of the concentration of the hydrogen in the sleeve is achieved, the reliability and stability of hydrogen concentration monitoring data are greatly improved, a more accurate basis is provided for early fault diagnosis of a transformer, and the device and the method have great significance in guaranteeing safe operation of a power grid.

The present invention discloses an accurate determination method for the total hydrogen content in a water body containing ultrafine hydrogen bubbles. This method comprises the following steps: Step 1, sealing a water sample containing ultrafine hydrogen bubbles to be measured in an anaerobic bottle; Step 2, using the freeze-thaw technique to release the hydrogen in the ultrafine bubbles in the water sample into the headspace of the anaerobic bottle; Step 3, using a gas chromatograph to measure the percentage of hydrogen in the headspace of the anaerobic bottle; Step 4, accurately measuring the volume of the water sample in the anaerobic bottle, the headspace volume, the air pressure inside the bottle, and the measurement temperature, and calculating the total hydrogen content in the water sample through a formula. The method proposed by the present invention has no requirements for the dissolved hydrogen concentration of the sample and the presence or absence of redox substances in the water sample, and has the advantages of high sensitivity, accuracy, convenience for popularization and application, etc.

The present invention relates to the technical field of semiconductor gas sensors, and specifically to a hydrogen-sensitive material and a hydrogen sensor of titanium dioxide quantum dots modified with tin dioxide, and a preparation method and application thereof. A SnO2 nanosheet composite material modified with TiO2 quantum dots is synthesized by combining a calcination method and an improved solvent thermal reaction method, and the SnO2 nanosheet and the TiO2 quantum dots have an n-n homojunction effect. The titanium dioxide quantum dots prepared by the improved solvent thermal reaction method have high purity, good uniformity, low synthesis temperature, easy-to-control reaction conditions, relatively simple preparation process, and no need for special expensive instruments. The TiO2QDs-SnO2 hydrogen sensor based on the titanium dioxide quantum dots has a wide detection range, ultrafast response / recovery time, excellent repeated response characteristics and selectivity, and can realize rapid and effective detection of hydrogen dissolved in transformer oil. TiO2 quantum dots have a significant effect on improving the sensing performance of TiO2QDs-SnO2 composite materials.

The invention relates to a device and a method for detecting dissolved hydrogen in transformer oil, and the device comprises a first single-mode optical fiber, a second single-mode optical fiber, a silicon dioxide column, a palladium-silver alloy column and a laser anti-reflection film which are obtained by cutting the same single-mode optical fiber, square holes are formed in non-fiber-core positions of cutting end faces of the first single-mode optical fiber and the second single-mode optical fiber, one end of the palladium-silver alloy column is fixedly connected with the first single-mode optical fiber through the square hole of the first single-mode optical fiber, and the other end of the palladium-silver alloy column is fixedly connected with the second single-mode optical fiber through the square hole of the second single-mode optical fiber. One end of the silicon dioxide column is fixedly attached to the non-fiber-core position of the cutting end face of the first single-mode optical fiber, and the other end of the silicon dioxide column is fixedly attached to the non-fiber-core position of the cutting end face of the second single-mode optical fiber. And the laser anti-reflection film is attached to optical fiber cores on the cutting end surfaces of the first single-mode optical fiber and the second single-mode optical fiber. According to the invention, the concentration of the hydrogen dissolved in the transformer oil can be detected without oil-gas separation.

The utility model discloses an in-water hydrogen detection device which comprises an in-water dissolved hydrogen detection unit and a data processing unit, the data processing unit is connected with the in-water dissolved hydrogen detection unit, the in-water dissolved hydrogen detection unit comprises a flow regulator and a liquid collecting tank, one end of the flow regulator is communicated with a constant cold water tank through a sample feeding pipe, and the other end of the flow regulator is communicated with a constant cold water tank. The other end of the detection branch is divided into two parts through a sample injection pipe and is respectively communicated with a detection branch I and a detection branch II, and the tail ends of the detection branch I and the detection branch II are communicated into the liquid collection tank; the detection device disclosed by the utility model adopts double quantitative tubes and two paths of sample injection detection, and one path has a degassing function, so that dissolved hydrogen in water can be removed, the content of the dissolved hydrogen in the water is reduced, and the background of the dissolved hydrogen in the water is accurately detected; the other path is used for directly detecting the content of the dissolved hydrogen in the water, the content of the dissolved hydrogen in the water is obtained by calculating and deducting a background, the influence caused by different water qualities is eliminated, and the detection accuracy and reliability are improved.