32 results about "Hydrogen sulfide test" patented technology

The invention relates to the technical field of baby diapers, in particular to an intelligent baby diaper replacement reminding system integrated with hydrogen sulfide detection, which is used for determining a reference acquisition frequency of each time interval in a time period based on historical multi-dimensional monitoring data of a target user; then determining the necessity of hydrogen sulfide detection at the current acquisition moment based on the multi-dimensional monitoring data in the backtracking time window at the current acquisition moment, and then adjusting the reference acquisition frequency of the current time interval based on the necessity of hydrogen sulfide detection at the current acquisition moment to obtain a final acquisition frequency; acquiring multi-dimensional monitoring data based on the final acquisition frequency in the remaining time interval in the current time interval; and finally, based on the multi-dimensional monitoring data acquired in real time, generating a diaper replacement reminding signal.

The invention relates to the field of biomedicine, and discloses a preparation method and application of an I-type composite photosensitizer with hydrogen sulfide detection performance. According to the invention, TPA-CHO and MN are adopted as monomers, a Schiff base reaction is adopted to synthesize a triphenylamine derivative TPAB with an A-pi-D-pi-A conjugated structure, Cu < 2 + > is further introduced into TPAB molecules, and a stable metal complex composite photosensitizer is formed through a coordinate bond. The functional composite photosensitizer TPAB-Cu < 2 + > has the characteristic of mainly generating I-type ROS and has efficient photodynamic bactericidal activity in an anoxic drug-resistant bacterium infection environment, and in addition, the functional molecule can be applied to drug-resistant bacterium infection microenvironment hydrogen sulfide level detection so as to realize early warning of drug-resistant bacterium infection and real-time detection of a treatment process; the technical problems that in an existing photodynamic therapy, the oxygen dependence of a photosensitizer is high, and the response sensitivity and specificity of a drug-resistant bacterium infection microenvironment are insufficient are solved.

This application relates to the biomedical field and discloses a method for preparing a type I composite photosensitizer with both hydrogen sulfide detection capabilities and its uses. The invention synthesizes a triphenylamine derivative TPAB with an A-π-D-π-A conjugated structure using TPA-CHO and MN as monomers via a Schiff base reaction, and further incorporates Cu... 2+ By introducing TPAB molecules, a stable metal complex photosensitizer is formed through coordination bonds. This application presents the functional composite photosensitizer TPAB-Cu. 2+ Characterized primarily by the generation of type I ROS, it exhibits highly efficient photodynamic bactericidal activity in hypoxic environments infected with drug-resistant bacteria. Furthermore, this functional molecule can be used to detect hydrogen sulfide levels in the microenvironment of drug-resistant bacterial infections, enabling early warning and real-time monitoring of the treatment process. This solves the technical problems of strong oxygen dependence of photosensitizers and insufficient sensitivity and specificity in response to the microenvironment of drug-resistant bacterial infections in existing photodynamic therapies.

Provided is a hydrogen sulfide detection device capable of detecting the generation of hydrogen sulfide at a plurality of locations in a battery pack while reducing cost. This hydrogen sulfide detection device is provided with: wiring that electrically connects a first node and a second node; and a monitoring circuit that monitors a voltage between the first node and the second node. The wiring includes a plurality of exposed metal portions in which a metal that is corroded by reacting with hydrogen sulfide is exposed.

The present invention provides a hydrogen sulfide detection device that utilizes metal corrosion and is capable of suppressing the scattering of corroded metal particles. [Solution] The hydrogen sulfide detection device comprises a substrate having a pattern formed of a metal that corrodes in reaction with hydrogen sulfide. The pattern includes a detection unit that detects hydrogen sulfide by the corrosion of the metal exposed on the surface of the substrate. The detection unit is covered with a filter that allows hydrogen sulfide gas to pass through but prevents particles generated from the corroded metal from passing through.

A hydrogen sulfide detection device includes a substrate including a pattern formed from a metal that reacts with hydrogen sulfide to be corroded. The pattern includes a detection portion that detects the hydrogen sulfide by corrosion of the metal exposed on a surface of the substrate. The detection portion is covered by a filter formed to allow passage of a hydrogen sulfide gas and to block passage of particles generated from the corroded metal.

Provided is a hydrogen sulfide detection device capable of suppressing scattering of metal particles after corrosion in a hydrogen sulfide detection device using corrosion of a metal. The hydrogen sulfide detection device is provided with a substrate having a pattern formed of a metal that is corroded by reacting with hydrogen sulfide. The pattern includes a detection portion that detects hydrogen sulfide by corrosion of a metal exposed on the surface of the substrate. The detection unit is covered with a filter that is formed so that hydrogen sulfide gas passes therethrough and particles generated by the corroded metal do not pass therethrough.

The utility model discloses a protection structure for a hydrogen sulfide detector, and relates to the technical field of hydrogen sulfide detectors, the protection structure comprises a detector main body, mounting side plates and protection assemblies, the left and right sides of the detector main body are provided with the mounting side plates, and the outer sides of the mounting side plates are provided with the protection assemblies; the protection assembly comprises buffer springs, a protection plate, hollow grooves, rubber pads and air bag strips, the protection plate is elastically connected to the outer side of the mounting side plate through the three sets of buffer springs distributed at equal intervals, the two hollow grooves are formed in the protection plate, and the upper rubber pad and the lower rubber pad are bonded to the outer side of the mounting side plate. The symmetric center of the rubber pad coincides with the symmetric center of the hollow groove. According to the protection structure for the hydrogen sulfide detector, a rubber pad is matched with a plurality of air bag strips to play a role in compression resistance and protection, meanwhile, the protection plates on the two sides can perform buffer protection on the two sides of the detector main body under the matching of buffer springs, and the two protection structures can be synergistically stressed to perform full protection.

This invention discloses a hydrogen sulfide detection device for oil drilling sites, belonging to the field of hydrogen sulfide detection technology. It includes a supporting base plate, with a warning mechanism for directional alerting above the base plate. A detector is fixedly connected to the bottom of the warning mechanism. A support mechanism for supporting the detector and adjusting its height is fixedly connected to the upper surface of the base plate. The warning mechanism includes a warning component for alerting and an adjustment component for converging, amplifying, and directionally propagating the warning information from the warning component. The adjustment component is located on top of the warning component. Through the cooperation of multiple structures, the detection device can provide audible and visual alerts. During the alerting process, the converging structure converges the sound and light for directional propagation, thereby transmitting warning information to frontline workers at a distance, improving the warning effect of the detection device.

The invention discloses a preparation method and application of a high-stability hydrogen sulfide detection card, and the preparation method at least comprises the following steps: step I, dispersing dithizone in ethanol to obtain a dithizone solution; iI, dissolving lead acetate in water to obtain a lead acetate solution; iII, under the alkaline condition, mixing the dithizone solution obtained in the step I with the lead acetate solution obtained in the step II to obtain a dithizone-Pb complex; step IV, mixing the methanol solution containing tetrabutyl ammonium hydroxide, N, N-dimethylformamide, water and ethanol, and carrying out water bath reaction to obtain an alkaline silica gel solid carrier; v, dispersing the dithizone-Pb complex obtained in the step III into the alkaline silica gel solid carrier obtained in the step IV to obtain a dithizone-Pb complex solid carrier; and step VI, dispensing the dithizone-Pb complex solid carrier obtained in the step V on a thin film to obtain the hydrogen sulfide detection card. The detection card can be used for quantitative detection of hydrogen sulfide and drug sensitivity analysis of bacteria.

The utility model provides a kind of portable waste gas hydrogen sulfide detection probe, it includes filter mechanism, it includes: docking sleeve, processing box being arranged at the bottom of the docking sleeve, filter plate being arranged in the processing box, aperture being arranged at the bottom of the filter plate, filter membrane being arranged in the processing box, activated carbon layer being arranged at the top of the filter membrane, limiting rod being arranged at the top of the activated carbon layer, and detection test paper being arranged at the top of the limiting rod;The utility model is when using, external waste gas enters processing box interior through the aperture at the bottom of filter plate inside processing box, and filter membrane and activated carbon layer in processing box interior carry out filtration to particulate matter and oily substance in waste gas, guarantee the accuracy of hydrogen sulfide detection, while after service life ends, the docking sleeve at the top of processing box is twisted off from the bottom of detection main body and replaced, and it is fast.

Provided is a hydrogen sulfide detection device capable of detecting the generation of hydrogen sulfide with high accuracy. This hydrogen sulfide detection device is provided with: wiring that electrically connects a first node and a second node; and a monitoring circuit that monitors a voltage between the first node and the second node. The wiring includes a pattern formed on the substrate and formed of a metal that is corroded by a reaction with hydrogen sulfide, and the pattern includes at least one through hole. The surface of the substrate has a recess, and the at least one through hole is exposed to the outside of the substrate through the recess.

The invention relates to the field of natural gas detection, and provides a method and device for detecting the concentration of hydrogen sulfide in natural gas, and the detection device comprises a detection tube, a direct-current power supply, a current detector and a flow detector; a detection tube is filled with a hydrogen sulfide detection indicator, and two ends of the detection tube are connected with a direct-current power supply and a current detector; introducing a preset mass of hydrogen sulfide-containing natural gas with known concentration into the detection tube to carry out color change reaction with the hydrogen sulfide detection indicator, and when the length of the color change reaction reaches a preset length, recording the reading variable quantity delta A of the current detector; then the natural gas to be detected is introduced into the other detection pipe, when the reading of the current detector changes delta A, the volume of the introduced natural gas to be detected is determined according to the flow detector, and finally the hydrogen sulfide concentration in the natural gas to be detected is calculated according to the preset mass and the volume of the natural gas to be detected. The problems of large error, low efficiency and poor repeatability in detection result reading of a natural gas hydrogen sulfide concentration detection device in the prior art are solved.

A hydrogen sulfide capture device comprises a substrate with a pattern formed from a metal that reacts with hydrogen sulfide, causing it to corrode. The pattern includes a capture section that captures the hydrogen sulfide produced by the corrosion of the metal exposed on a surface of the substrate. The capture section is covered with a filter designed to allow the passage of hydrogen sulfide gas while blocking the passage of particles generated from the corroded metal.

The utility model relates to the technical field of hydrogen sulfide pipeline sealing devices, in particular to a hydrogen sulfide pipeline sealing device which comprises an air inlet pipe, an air guide pipe, a stop valve, a connecting pipe, a self-operated pressure reducing valve, a nitrogen pipe, a connecting line, a controller, a hydrogen sulfide detection probe, an air pump and a sulfur production air blower fixedly installed on the air inlet pipe. The end of the air guide pipe extends into the air inlet pipe and is fixedly connected with the air inlet pipe, a three-way hole is formed in the end of the air guide pipe, the stop valve is fixedly installed at the exhaust end of the air guide pipe, the connecting pipe is fixedly installed at the air inlet end of the stop valve, and the self-operated pressure reducing valve is fixedly installed at the end of the connecting pipe. The nitrogen pipe is fixedly installed at the gas inlet end of the self-operated pressure reducing valve, the gas pump is fixedly installed at the end of the nitrogen pipe, and the hydrogen sulfide detection probe is fixedly installed in the gas inlet pipe. According to the device disclosed by the utility model, the self-operated pressure reducing valve is used for setting nitrogen to normal operation pressure of the sulfur production blower and introducing the nitrogen into the gas inlet pipe to form a positive pressure barrier, so that hydrogen sulfide is prevented from leaking through nitrogen sealing.

The utility model provides a hydrogen sulfide detector convenient to disassemble and assemble, and relates to the field of hydrogen sulfide detectors, the hydrogen sulfide detector comprises a fixing assembly, the fixing assembly comprises a fixing frame, a mounting groove, a mounting plate, a clamping groove and a blocking plate, and the fixing assembly is internally provided with a mounting assembly; the mounting assembly comprises a mounting block, a moving groove, a clamping block 203, a connecting plate, a moving plate, a fixing plate, a limiting groove, a reset spring and a limiting rod, and a protection assembly is arranged on one side of the fixing assembly. According to the hydrogen sulfide detector disclosed by the utility model, a movable plate is loosened to drive a limiting rod to reset through resetting of a reset spring, so that the movable plate is driven to move, the movable plate moves to drive a connecting plate to move, and the connecting plate moves to drive a clamping block 203 to move into a clamping groove, thereby stabilizing a mounting block and further stabilizing a hydrogen sulfide detector body; a movable plate is pressed to enable a clamping block 203 to be far away from the interior of a clamping groove, so that a mounting block is taken out, and the hydrogen sulfide detector body is convenient to disassemble and assemble.

The invention discloses an evaluation device and an evaluation method for the desulfurization effect of a desulfurizer. The evaluation device for the desulfurization effect of the desulfurizer comprises an absorption tower treatment structure and a pipeline direct filling structure, wherein the absorption tower treatment structure and the pipeline direct filling structure are connected in parallel on a raw material gas pipeline; one hydrogen sulfide detection mechanism is connected to the raw gas pipeline, and the other hydrogen sulfide detection mechanism is used for detecting the content of hydrogen sulfide in any gas outlet pipeline in the absorption tower treatment structure and the pipeline direct filling structure; when the absorption tower treatment structure and the pipeline direct filling structure operate at the same time, any structure serves as an experimental branch, the other structure serves as a working branch, and the influence of corresponding structure parameters and desulfurizer filling parameters in the two treatment processes on the sulfur capacity is obtained. The method has the beneficial effects that the influence factors on the sulfur capacity under two treatment process conditions are obtained.

The invention discloses an evaluation device and an evaluation method for influence factors of a desulfurization effect of an absorption tower. The evaluation device comprises an absorption tower treatment module, and an inlet of the absorption tower treatment module is connected with a feed gas pipeline; the desulfurizing agent filling module is used for filling a desulfurizing agent into the absorption tower treatment module; one hydrogen sulfide detection mechanism is used for detecting the hydrogen sulfide content of the raw material gas in the raw material gas pipeline, and the other hydrogen sulfide detection mechanism is used for detecting the hydrogen sulfide content of the gas treated by the absorption tower treatment module; the influence of the structural characteristics of the absorption tower processing module and the filling parameters of the desulfurizing agent on the sulfur capacity is obtained. The method has the beneficial effects that the influence of different structural characteristics and filling parameters on the sulfur capacity is obtained under the actual field condition, and then the structural characteristics and the filling parameters which are influence factors of the desulfurization effect of the absorption tower are determined.

The application discloses a hydrogen polysulfide fluorescent probe based on biological orthogonality, and a preparation and application thereof. The hydrogen polysulfide detection probe based on the biological orthogonality of a cyclooctyne can detect hydrogen polysulfide in a living body in real time, fast, low toxicity and high selectivity.

The present invention provides a hydrogen sulfide detection device that can be applied to battery packs containing battery cells having a sulfide electrolyte and is capable of detecting the generation of hydrogen sulfide with high accuracy. [Solution] The hydrogen sulfide detection device comprises wiring that electrically connects a first node and a second node, and a monitoring circuit that monitors the voltage between the first node and the second node. The wiring includes a pattern formed on a substrate and made of a metal that corrodes in reaction with hydrogen sulfide, and the pattern includes at least one via. Recesses exist on the surface of the substrate, and each of the at least one via is exposed to the outside of the substrate through the recess.

The invention discloses a high-sensitivity hydrogen sulfide fluorescent probe based on porphyrin-nitrobenzoxadiazole donor-acceptor molecular engineering and a synthesis method thereof. The structural formula of the probe is shown in the specification. According to the probe, a nitrobenzoxadiazole group is introduced to the periphery of a porphyrin macroring, and an intramolecular donor-acceptor system is constructed. The detection mechanism is based on a nucleophilic substitution reaction of hydrogen sulfide to a phenyl ether bond, and a nitrobenzoxadiazole group is removed, so that electron transfer under optical excitation is inhibited, and red fluorescence emission of porphyrin is recovered. After the probe reacts with hydrogen sulfide, the probe presents an obvious fluorescence signal at 653 nm under excitation of 417 nm, the Stokes shift reaches 236 nm, and the probe has the advantages of obvious fluorescence response, good water solubility, high fluorescence quantum yield and the like, can realize high-selectivity detection of hydrogen sulfide, and has wide application prospects in the fields of analytical chemistry, life science, environmental monitoring, biomedical treatment and the like.

A measurement method and apparatus for hydrogen sulfide concentration in natural gas. The measurement apparatus comprises a detector tube, a direct current power supply, a current detector, and a flow detector. The detector tube is filled with a hydrogen sulfide detection indicator, and two ends of the detector tube are connected to the direct current power supply and the current detector; a preset mass of natural gas containing hydrogen sulfide at a known concentration is introduced into the detector tube to undergo a color change reaction with the hydrogen sulfide detection indicator, and when a length of the color change reaction reaches a preset length, a reading change amount ΔA of the current detector is recorded; then natural gas under test is introduced into another detector tube, and when the reading of the current detector changes by ΔA, the volume of the introduced natural gas under test is determined by means of the flow detector; and finally, the hydrogen sulfide concentration in the natural gas under test is calculated on the basis of the preset mass and the volume of the natural gas under test.

The invention relates to a system for detecting hydrogen sulfide in waste acid sulfuration arsenic removal tail gas, which comprises a primary filter, and the primary filter is sequentially connected with a first three-way electromagnetic valve, a sucking pump, a gas cooling dryer, a second three-way electromagnetic valve, a terminal filter, a gas path converter, a sample gas regulating valve and a gas mixing chamber through a pipeline, a hydrogen sulfide gas detector is fixedly connected in the gas mixing chamber, the first three-way electromagnetic valve and the second three-way electromagnetic valve are communicated with a compressed air source through pipelines, the compressed air source is connected with a dilution regulating valve through a pipeline, and the dilution regulating valve is communicated with the gas mixing chamber. Under the condition that a hydrogen sulfide gas detector is not changed, high-concentration hydrogen sulfide gas is measured, and meanwhile, the measuring range adjusting degree can be changed along with process requirements.

A hydrogen sulfide detection device comprises a wire electrically connecting a first node and a second node, and a monitoring circuit that monitors the voltage between the first and second nodes. The wire contains a variety of metallic exposed sections where a metal that reacts with the hydrogen sulfide by corrosion is exposed.

A hydrogen sulfide detection device includes a wire that electrically connects a first node and a second node, and a monitoring circuit that monitors a voltage between the first node and the second node. The wire includes a plurality of metal exposed portions in which a metal that reacts with the hydrogen sulfide to corrode is exposed.

The utility model relates to the technical field of petroleum equipment, in particular to a separated flow testing device for hydrogen sulfide detection. Comprising a device inlet, a gas-liquid mixing pipe, a buffer pipe, a gas-liquid separation cavity, a gas pipe, a liquid pipe, an electromagnetic control valve, a gas detection cavity, a one-way gas valve, a hydrogen sulfide gas detector, a warning lamp, a motor assembly, a crude oil moisture content detector, a liquid detection cavity, a crude oil liquid amount tester and a device outlet. Secondary separation of associated gas and associated liquid in the crude oil can be realized, so that the hydrogen sulfide gas in the associated gas in the crude oil is more accurately detected, and the data detection error of the liquid production capacity of the crude oil is smaller.

The utility model discloses a raw material recovery device for sodium pyrithione production, which belongs to the technical field of sodium pyrithione production and comprises an acid treater, a gas outlet is arranged at the top of the acid treater and connected with an alkali liquor tower through a first pipeline, a gas outlet end of the first pipeline is positioned below the surface of alkali liquor in the alkali liquor tower, and a partition plate is arranged above the alkali liquor. The partition plate divides the alkali liquor tower into an upper part and a lower part; a first liquid outlet is formed in the partition plate; a spraying assembly is arranged above the partition plate, the spraying assembly is communicated with the lower part of the alkali liquor tower through a circulating pipe, and a hydrogen sulfide detector is arranged below the partition plate; and a fan is arranged on the air return pipe, an alkali liquor inlet is formed in the side wall of the alkali liquor tower, and an alkali liquor outlet is formed in the bottom of the alkali liquor tower. The gas return pipe sucks escaped hydrogen sulfide to the position above the partition plate, the spraying assembly sprays alkali liquor, residual hydrogen sulfide gas is absorbed, the recovery efficiency of hydrogen sulfide is high, and the occupied area of equipment is small.

The utility model relates to the technical field of hydrogen sulfide detectors, and discloses a supporting seat for a hydrogen sulfide detector, which comprises a hydrogen sulfide detector body, a supporting seat mechanism is arranged on the back of the hydrogen sulfide detector body, the supporting seat mechanism comprises a fixing plate and a connecting block, the connecting block is fixedly connected with the hydrogen sulfide detector body, and the fixing plate is fixedly connected with the connecting block. A mounting block is fixedly mounted on one side of the connecting block, a connecting seat is fixedly mounted on one side of the fixing plate, a reset cylinder is fixedly mounted on one side of the connecting seat, and a reset spring is fixedly mounted on one side of an inner cavity of the reset cylinder. The supporting seat mechanism is arranged, the positioning insertion rod can be separated from the mounting block by pulling the pull seat, the hydrogen sulfide detector body can be conveniently disassembled and overhauled, the positioning insertion rod can be driven to be inserted into the mounting block by loosening the pull seat and rebounding the reset spring, and therefore the hydrogen sulfide detector body is convenient to assemble and disassemble, simple to install, convenient and practical.

The utility model discloses an automatic locking device for detecting standard exceeding of gas concentration, which comprises a case, a gas pumping mechanism is arranged on the outer side of the case, a filtering mechanism is mounted in the case, a hydrogen sulfide detector is arranged above the filtering mechanism, a connecting line is mounted on one side of the hydrogen sulfide detector, and a gas outlet is formed in the other side of the hydrogen sulfide detector. A PLC is installed at one end of the connecting line, an external control assembly is connected to the outer side of the PLC, and a rotor flow meter is connected to the other side of the filtering mechanism through a pipeline. By arranging the gas extraction mechanism, the filtering mechanism, the hydrogen sulfide detector and the external control assembly, the gas extraction pump can be installed at the 1 / 3 position of the lower portion of the access door, pumped gas enters the filtering mechanism through the gas conveying pipe to be filtered many times, the filtered gas enters the hydrogen sulfide detector, and the concentration of the hydrogen sulfide gas is detected; after the concentration exceeds the standard, an analog quantity signal is sent out and is translated to control a closing signal of the magnetic lock, so that access door locking is realized, and potential safety hazards are prevented.