194 results about "Gas management" patented technology

The invention belongs to the technical field of fuel cells, and particularly relates to carbon paper for a gas diffusion layer with a water-gas management function and a preparation method of the carbon paper. The carbon paper for the gas diffusion layer comprises at least three alternately stacked carbon layer structures, odd layers are macroporous carbon layers, and the macroporous carbon layers are formed by dipping carbon fiber base paper in a mixed solution of resin and a conductive material and drying the carbon fiber base paper; the even-numbered layers are small-hole carbon layers, and the small-hole carbon layers comprise resin and conductive materials and are coated on the surfaces of the odd-numbered layers; the odd-numbered layers and the even-numbered layers are compounded through a hot-pressing process to form a composite material; the composite material is subjected to high-temperature heat treatment to form a carbon paper A conductive network is formed in the carbon paper, the carbon paper with higher conductivity is prepared, part of the conductive material is filled in the carbon paper to build a microporous structure, the low-gram-weight base paper forms a macroporous structure, and the conductive material and the resin are mixed to form a microporous structure, so that the water and gas management capability is favorably improved.

The invention provides an intelligent gas meter remote meter reading method and system based on the Internet of Things, and relates to the technical field of intelligent gas meters. The method comprises the following steps: collecting local metering data and Internet of Things transmission data; constructing a dual-source data multi-dimensional conflict identification system, and screening conflict data groups; performing accuracy verification on the conflict data group; an encrypted transmission channel is established, and the traceability of the data transmission process is realized; triggering a grading early warning mechanism for the abnormal usage data deviating from the baseline; and carrying out iterative updating on the meter reading data knowledge base, and carrying out remote calibration. According to the method, double-source data conflicts are identified through multiple dimensions, conflict data are corrected in combination with a hybrid model, metering accuracy is guaranteed, and disputes are reduced; through constructing a baseline model and a grading early warning mechanism, abnormal usage is accurately identified and disposed, hidden dangers are timely prevented, and service is excellent. Through dynamic on-demand remote calibration of equipment, the metering precision is guaranteed, the operation and maintenance cost is reduced, the user data transparency is improved, and intelligent gas management is assisted.

The invention discloses a preparation process of a highly graphitized fuel cell microporous layer with a graded pore structure and gradient wetting performance. The preparation method comprises the following steps: firstly, uniformly dispersing carbon black particles in a polyvinylpyrrolidone ethanol solution to prepare a homogeneous viscous spinning solution; then preparing a fiber membrane with a hierarchical pore structure on a plane structure through an electrostatic spinning process, and constructing an excellent water and gas transmission channel; partially entangled fibers are formed in the thickness direction; after drying, stabilization and pre-oxidation are carried out under carbon paper clamping and loading, and fibers are uniformly shrunk and refined; inducing the pre-oxidized fiber membrane to generate highly graphitized transformation under the clamping of a high-purity graphite flake; the preparation method comprises the following steps: taking polytetrafluoroethylene as a raw material, soaking the polytetrafluoroethylene in polytetrafluoroethylene turbid liquid under horizontal placement, drying and melting to enable the polytetrafluoroethylene to be distributed in a gradient manner in the vertical direction, so that good water and gas management performance under a full-humidity working condition (0-100% relative humidity) is realized; and the overall performance of the fuel cell is obviously improved.

The invention discloses a gas comprehensive management system based on a large model, and relates to the technical field of gas management. A gas comprehensive management system based on a large model comprises a gas monitoring module and a gas safety management module. According to the method, the monitoring frequency is automatically calculated and adjusted according to the gas use mode of the target resident and the real-time state of the gas pipe network, so that unnecessary data acquisition is reduced, and the potential risk of user privacy is reduced; the real-time performance and the accuracy of gas data are ensured; by integrating necessary data such as gas concentration, pipeline pressure and valve state and optional data such as environment sound spectrum and combining a graph attention network and a digital twinborn model, deep fusion and deep analysis of multi-source data are realized, and comprehensiveness and accuracy of gas safety judgment are improved; and a multi-level safety early warning mechanism is adopted, so that the sensitivity and the reliability of gas safety early warning are effectively improved.

The invention relates to a movable tungsten resource recovery device integrating light hydrogen production, hydrogen metallurgy and tungsten transportation, and belongs to the technical field of clean energy and low-carbon metallurgy. The invention aims to solve the problems of environmental pollution, high energy consumption, complex process and the like when the high-stability tungsten-containing waste is treated by a traditional recovery method. The device is constructed on a mobile platform and comprises a core reaction module, a photocatalytic methanol reforming hydrogen production module, a precise gas management and supply module, an energy and water recovery module, a hydrogen regeneration and circulation module, a waste pretreatment module, a product treatment and separation module, an integrated process control and safety monitoring module and the like. Through the optimally designed oxidation-reduction process and the hydrogen metallurgy principle, efficient recovery of tungsten and associated metal is achieved, meanwhile, energy recovery and a hydrogen internal circulation system are integrated, the energy efficiency is remarkably improved, the sustainability is enhanced, and the device has the advantages of mobile operation, cleanliness, environmental protection, high safety, high resource recovery rate and the like.

The invention discloses a preparation method of a fuel cell gas diffusion layer with a gradient microporous layer, relates to a preparation method of a fuel cell gas diffusion layer, and aims to solve the technical problem of poor water-gas management capability of the existing gradient gas diffusion layer. The preparation method comprises the following steps: preparing dispersion liquid according to different volume fractions of the alcohol solvent, and adding the carbon powder and the water repellent agent into the dispersion liquid to obtain different slurries; the preparation method comprises the following steps: preparing a slurry from a Dongli commercial gas diffusion layer, sequentially coating the surface of hydrophobic carbon paper with the slurry to obtain a gas diffusion layer with a multi-layer microporous layer structure, forming a gradient microporous layer pore channel structure in the longitudinal direction, and ensuring that the porosity of the gas diffusion layer is 82.97%. The peak power density of the fuel cell provided by the invention is 1659-1833 mW.cm <-2 >, which is improved by 21.99%-34.78% compared with that of a fuel cell using a Dongli commercial gas diffusion layer, and the fuel cell can be used in the field of fuel cells.

The invention relates to the technical field of industrial automation, and discloses an exhaust and inflation table and a use system, and the exhaust and inflation table comprises a vacuum module which realizes and maintains a high vacuum environment in equipment; the gas management module is responsible for accurately controlling inlet and outlet of gas and is provided with a safety valve and an exhaust port; the control system hardware module comprises a touch screen HM I, a control panel and a control cabinet, forms an equipment operation and management center and has multiple safety protection mechanisms; the pipeline module is composed of a stainless steel pipeline and a quick connector, and the purity and the sealing performance of gas are kept in the conveying process. Through an integrated automatic control system, preset operations such as exhausting, inflating and cleaning can be executed, an operator only needs to set parameters and start equipment, an efficient vacuum system and a quick-response gas management system enable the equipment to quickly reach the set vacuum degree and gas pressure, the overall throughput of production can be greatly improved, and the production efficiency is improved. Therefore, the effect of improving the production efficiency can be achieved.

A hybrid electrochemical device configuration that comprises a first electrode that includes a redox reactive material or an alloy based on a transition metal, a second electrode that includes a multi-functional catalyst to catalyze hydrogen evolution reaction, hydrogen oxidation reaction, and water oxidation reaction at the second electrode, a separator disposed between the first and second electrode, an electrolyte disposed between the first electrode and the second electrode, and a conduit which provides the means to compensate for water loss in the electrolyte during electrochemical device operation. At least one valve is included that connects the electrolyte management system to the conduit system and a valve to connect the gas formed in the electrode to the gas management system. The electrochemical device configurations include several individual devices stacked on top of each other and separated from each other using separation plates.

A breath alcohol device calibration system includes a computerized calibration module operable to calibrate a candidate breath alcohol device using a reference gas of known alcohol concentration, and a reference gas tank identification module operable to identify a reference gas tank that is coupled to the breath alcohol device calibration system. Identification is performed using at least one distinguishing characteristic of the coupled tank, the distinguishing characteristic providing reference gas tank information including at least the known alcohol concentration of gas in the reference gas tank. The reference gas tank identification module is further operable to read a temperature history of the tank from an electronic device coupled to the tank, and to indicate an error condition if the temperature history of the tank indicates temperatures below a first temperature threshold over the tank's recent temperature history to potentially result in incomplete mixing of the reference gas.

A method and system of determining a pressure regulation scheme at an intelligent gas gate station based on an Internet of Things are provided. The method is performed by at least one processor of an intelligent gas management platform, and the intelligent gas management platform includes an intelligent customer service management sub-platform, an intelligent operation management sub-platform, and an intelligent gas data center. The method includes: obtaining, by a processor of the intelligent gas data center, gas terminal information from an intelligent gas object platform through an intelligent gas sensor network platform; predicting, by a processor of the intelligent operation management sub-platform, a gas gate station flow by analyzing the gas terminal information based on a flow model; determining, by the processor of the intelligent operation management sub-platform, gas gate station pressure; obtaining a pressure sum; and determining the pressure regulation scheme based on the pressure sum and a total pressure threshold.

A method for managing energy-saving early warning of a smart gas flowmeter is provided. The method is executed by a smart gas management platform. The method comprises obtaining a remaining power of the smart gas flowmeter, determining a confidence level of the remaining power based on at least environmental data, determining a calibrated power by calibrating the remaining power based on the confidence level, determining whether to issue a power alert to a gas user based on the calibrated power, operation data of the smart gas flowmeter, and at least one reference correspondence. The reference correspondence represents a relationship between an operation behavior of the smart gas flowmeter and a power consumption. The method also comprises generating an energy-saving management and operation scheme of the smart gas flowmeter in response to a determination that the power alert is issued to the gas user.

A method and an Internet of Things (IoT) system for allocating maintenance tasks based on smart gas are provided. A smart gas management platform of the Internet of Things (IoT) system is configured to: obtain call consultation data information; generate first data information from the call consultation data information; generate one or more maintenance feature vectors of a maintainer to be evaluated; determine a first maintenance evaluation value for the one or more maintenance feature vectors; generate second data information; determine and input user-side gas feature data, gas composition features, gas entry features, and gas upstream transportation features into a gas fault prediction model to predict a gas fault type; generate a location accuracy of one or more location feature vectors; adjust a work order processing scope of the maintainer to be evaluated based on a multi-dimensional maintenance evaluation value; and allocate subsequent maintenance tasks.

The present invention discloses a comprehensive gas management system based on a large model, which relates to the field of gas management technology. The comprehensive gas management system based on a large model includes: a gas monitoring module and a gas safety management module. The present invention automatically calculates and adjusts the monitoring frequency according to the gas usage pattern of the target household and the real-time status of the gas pipeline network, thereby reducing unnecessary data collection and reducing potential risks to user privacy; ensuring the real-time and accuracy of gas data; by integrating necessary data such as gas concentration, pipeline pressure, valve status, and optional data such as ambient sound spectrum, combined with graph attention networks and digital twin models, it realizes deep fusion and deep analysis of multi-source data, thereby improving the comprehensiveness and accuracy of gas safety judgments; and adopts a multi-level safety warning mechanism to effectively improve the sensitivity and reliability of gas safety warnings.

The invention discloses a method for merging and matching gas test items of an LNG transport ship. The method comprises the following steps: synchronously carrying out a self-flow gas supply mode large-flow combustion test of a GCU at the cold cabin last stage of a first cold cargo cabin; after the cold cabin last phase of the first cold cargo cabin is finished, a GMS (Gas Management System) controls the GCU flow test process to be synchronously carried out; the forced vaporizer maximum flow function debugging and the compressor air supply mode endurance test of the GCU are synchronously carried out; the energy consumption test of a host under different navigational speeds and different powers in an unmanned cabin project in a cabin gas mode and the GMS automatic control forced vaporizer flow test are synchronously carried out; and the LNG ship cargo hold temperature rise process and the ship speed measurement process are synchronously carried out. According to the system and the method, the test time, the test cost and the carbon emission can be reduced, the stability and the safety of a gas system are improved, the operation efficiency of the LNG transport ship can be improved, and contribution can be made to global environmental protection career.

A breath alcohol device calibration system includes a computerized calibration module operable to calibrate a candidate breath alcohol device using a reference gas of known alcohol concentration, and a reference gas tank identification module operable to identify a reference gas tank that is coupled to the breath alcohol device calibration system. Identification is performed using at least one distinguishing characteristic of the coupled tank, the distinguishing characteristic providing reference gas tank information including at least the known alcohol concentration of gas in the reference gas tank. The reference gas tank identification module is further operable to read a temperature history of the tank from an electronic device coupled to the tank, and to indicate an error condition if the temperature history of the tank indicates temperatures below a first temperature threshold over the tank's recent temperature history to potentially result in incomplete mixing of the reference gas.

Method for smart gas household inspection based on government supervision, IoT system, and medium are provided. The method includes obtaining gas usage data; determining a candidate inspection time period; determining an inspection parameter based on the candidate inspection time period and the inspection resource information; and generating an inspection command and sending the inspection command to a smart gas inspector object platform to enable the inspector to conduct home inspection. The system includes a smart gas user platform, a smart gas service platform, a smart gas management platform, a smart gas sensor network platform, a smart gas equipment object platform, a smart gas inspector object platform, a government gas supervision object platform, a government gas supervision sensor network platform, a government gas supervision management platform, a government gas supervision service platform, and a citizen user platform. The method is implemented by reading computer instructions stored on computer-readable storage medium.

The invention provides a preparation method of a PEM water electrolysis anode diffusion layer, which relates to the field of PEM water electrolysis. Titanium nanotubes with different pore sizes are selected, and the large-pore titanium nanotubes are used to transmit liquids, and the small-pore titanium nanotubes are used to transmit gases, so that the gas and liquid transmission in the PEM water electrolysis process is highly ordered, and good liquid and gas management functions are achieved; the surfaces of the titanium nanotubes and titanium powders are attached with noble metal ions, and then oxygen is introduced for calcination, so that the noble metal ions form an oxide grid structure and are attached and embedded in the surfaces of the titanium nanotubes and titanium powders, which has higher firmness, protects the titanium material from being oxidized in the water electrolysis process, and improves the conductivity and catalytic ability of the anode diffusion layer.

An off-chain gas management system allows Web3 developers to cover gas fees for their users. When a user wants to complete a blockchain transaction, the system receives a sponsorship request through an API and checks if the operation qualifies under the developer's gas sponsorship policy. Policies include spending limits, approved addresses, and time restrictions. If approved, the system creates a cryptographic signature that authorizes transfer of the gas fee amount. An on-chain contract validates the signature before covering the gas fees. The system includes a user interface for creating and managing policies with configurable spending controls and address restrictions. Advanced features use machine learning to allocate funds based on user value, detect fraud, classify transaction types, optimize cryptocurrency purchases, and predict when funds will run out. This eliminates the barrier of users needing to own cryptocurrency to pay gas fees while maintaining security through automated policy enforcement and cryptographic validation.

The utility model relates to the technical field of gas control, in particular to a drilling blowout preventer for gas control, which comprises a single two-cavity pneumatic delay gas-water-slag separating device, one end of the outer surface of the single two-cavity pneumatic delay gas-water-slag separating device is fixedly connected with a fixing pipe, and one end of the fixing pipe is fixedly connected with a fixing flange. According to the drilling blowout preventer for gas control, due to the arrangement of the single two-cavity pneumatic time-delay gas-water-slag separation device, the fixing pipe, the connecting pipe, the positioning pipe and the air bag, when the drilling blowout preventer is used, the single two-cavity pneumatic time-delay gas-water-slag separation device can conduct two-stage separation on gas, water and slag, a two-cavity locking gas sealing chamber structure is adopted, and the gas-water-slag separation device can conduct two-stage separation on the gas, the water and the slag; a pneumatic delay valve element is used for acting according to a certain time period to alternately open and close water slag discharge port valves of the two cavities, gas, water and slag are automatically separated in the closed cavities, space body exchange in the extraction state is achieved, gas overflow is effectively eradicated, and gas alarm over-limit of the environment nearby drilling is prevented.

A gas management system includes an anodic chamber, a cathodic chamber, and a membrane assembly configured to remove bubbles from an electrochemical cell to increase hydrogen generation of the electrochemical cell. The membrane assembly includes a first outer layer arranged between the cathodic chamber and the anodic chamber, a second outer layer arranged between the first outer layer and the cathodic chamber, and a spacer layer arranged between the first outer layer and the second outer layer.

The invention discloses a fuel gas management system which comprises a fuel gas detection module, an alarm module, a threshold value adjusting module, a mode switching module, a user type judging module and a fuel gas equipment use state judging module. The system has two modes, when it is judged that a current user belongs to a non-marked crowd, the system is in the first mode, and a gas alarm threshold value is set to be a first gas alarm threshold value of a conventional level; when it is judged that the gas equipment belongs to the marked crowd, switching to a second mode, providing a low-level gas alarm threshold setting option, monitoring the use state of the gas equipment by a gas equipment use state judgment module, setting a second gas alarm threshold when the gas equipment works, and setting a third gas alarm threshold when the gas equipment does not work; the second gas alarm threshold value is greater than the third gas alarm threshold value. In this way, timely and accurate gas leakage early warning can be provided for the marked crowd, user safety is ensured, and the gas accident rate is reduced.

The present invention provides a novel micro-flow control system for satellites using a Tesla-like valve structure, comprising a xenon gas path control system and a circuit control system. The xenon gas path control system includes a novel micro-flow controller using a Tesla-like valve structure for satellites. The novel micro-flow controller includes a sealed cavity with a xenon gas inlet and outlet, and multiple flow channels within the sealed cavity connecting the xenon gas inlet and outlet. The present invention utilizes the Tesla valve structure's progressive throttling characteristics during reverse flow to design the flow channels of the micro-channel flow controller. Theoretically, this design can achieve near-perfect, precise control of xenon gas pressure and flow. The successful implementation of this invention is of strategic significance for improving xenon gas management in space Hall-effect electric thrusters, enhancing the precision of micro-flow distribution and coordinated control, and increasing their maneuverability.

A gas management system includes an anodic chamber, a cathodic chamber, and a membrane assembly configured to remove bubbles from an electrochemical cell to increase hydrogen generation of the electrochemical cell. The membrane assembly includes a first outer layer arranged between the cathodic chamber and the anodic chamber, a second outer layer arranged between the first outer layer and the cathodic chamber, and a spacer layer arranged between the first outer layer and the second outer layer.

The invention discloses a control method applied to a hydrogen liquefier gas management system. The gas management system comprises a high-pressure pipeline, a low-pressure pipeline, a compressor, a buffer tank and a cold box, an unloading valve is arranged on a pipeline between an inlet of the buffer tank and the high-pressure pipeline, a loading valve is arranged on a pipeline between an outlet of the buffer tank and the low-pressure pipeline, and a first bypass valve is arranged between the high-pressure pipeline and the low-pressure pipeline; the buffer tank is used for storing and releasing hydrogen; the method comprises the steps that the rotating speed of the compressor and the opening degree of the loading valve and the opening degree of the first bypass valve are adjusted based on the air consumption of the cold box; the pressure of the high-pressure pipeline is adjusted by adjusting the opening degree of the loading valve and the opening degree of the unloading valve; and the pressure of the low-pressure pipeline is adjusted by adjusting the opening degree of the first bypass valve. The pressure of the gas management system can be ensured to be stable, and gas can be stably supplied to the liquefaction cold box.

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

The invention relates to the field of coal mine gas treatment and utilization, and discloses a coal mine gas power station gas metering analysis system. The system comprises a flow metering unit based on a large-pipe-diameter V-cone flowmeter and differential pressure / pressure / temperature three parameters, a multi-point gas sampling and analyzing unit for cyclic sampling and parallel preprocessing, a methane concentration analyzing unit based on TDLAS and a redundant channel, a PLC metering and data integrity unit with an ms-level time reference and 64-bit high-precision calculation, and a data processing unit based on a redundant channel. A positive pressure purging explosion-proof control and alarm interlocking unit; and a local / cloud data issuing unit. The system solves the comprehensive problems of short straight pipe section, ultra-low concentration real-time analysis, continuous and reliable data and on-site explosion prevention, and the metering and safety management and control level of a gas power station is remarkably improved.

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

The application provides a data communication method, device and storage medium. The method is applied to a gas device including a processing unit and a metering module. The method includes the following steps: obtaining function data, encapsulating the function data into a data frame by using a preset frame structure, sending the data frame to the metering module, and obtaining a response. Flexible data transmission is realized. The preset frame structure encapsulates data, which can accommodate more types of function data, realizes complex data interaction requirements, and thus improves the technical problem of insufficient data transmission capacity of a gas meter in the related art caused by strict limitation of the number of fields, which is difficult to meet the requirements of modern gas management systems on data richness, flexibility and expansibility, and improves the intelligent level of the gas metering device.

The invention discloses an oil and gas management off-grid electric valve with a methanol fuel cell, and relates to the technical field of oil and gas conveying pipeline control equipment, in particular to the oil and gas management off-grid electric valve with the methanol fuel cell. The device comprises an electric valve, a photovoltaic panel, an energy storage lithium battery, a methanol fuel cell and a methanol barrel which are arranged on an oil-gas pipeline. The photovoltaic panel converts light energy into electric energy to charge the lithium battery, and the lithium battery provides operation power for the valve. The methanol fuel cell is connected with the lithium battery and is started and stopped under the control of the voltage of the lithium battery. The device preferably further comprises a power management control system which is used for monitoring the voltage of the lithium battery, starting the fuel battery to charge the lithium battery when the voltage is lower than a lower limit, and closing the fuel battery when the voltage is higher than an upper limit, so that automatic management and supplement of energy are realized. According to the invention, a hybrid power supply mode with photovoltaics as a main mode and methanol fuel cells as an auxiliary mode is utilized, and the long-term off-grid stable power supply problem of oil and gas valves in remote areas is solved.

The invention discloses a heat storage type gas oxidation destroying device based on coal gangue waste heat driving, and relates to the technical field of coal mine solid waste resource utilization and gas treatment, the heat storage type gas oxidation destroying device comprises a support, the support is provided with a coal gangue combustion unit, a gas preheating unit, a heat storage oxidation unit, a gas pretreatment unit and an intelligent control unit, the coal gangue combustion unit comprises a discharged material conveying device, the coal gangue which is a solid waste is innovatively used as a core waste heat source, heat energy released by combustion of the coal gangue indirectly preheats heat storage oxidation destruction of low-concentration gas, and cooperative treatment of the two kinds of waste is achieved. On one hand, the resource utilization rate of the coal gangue is greatly improved, and spontaneous combustion pollution is avoided; and on the other hand, methane in ventilation air methane is efficiently decomposed, emission of massive greenhouse gas can be reduced every year, the dual environmental protection targets of solid waste reduction and gas waste purification are achieved from the source, and the environment cooperative treatment effect is remarkably superior to that of a traditional independent treatment mode.