67 results about "Hydrogen station" patented technology

The invention discloses a hydrogen refueling station compressor bypass current-limiting pressure-stabilizing pressurization system and method, and belongs to the technical field of hydrogen energy storage and filling. The technical problems that when an existing hydrogen refueling station switches hydrogen storage bottle sets of different pressure grades, due to the fact that the pressure of an outlet of a compressor suddenly changes instantly, equipment operation is unstable, the service life is shortened, the operation efficiency is low, and equipment abrasion is serious are solved. The bypass pipeline is arranged between the compressor outlet pipeline and the multi-stage hydrogen storage bottle group, so that a temporary flow limiting system is constructed; the intelligent controller adopts a PLC (Programmable Logic Controller), a DCS (Distributed Control System) or a special controller, is equipped with a human-computer interface, and accurately and automatically regulates and controls the opening and closing of valves on the main hydrogen supply pipeline and the bypass pipeline, so that the outlet pressure of the compressor is stably transited during switching, and the automatic control and operation convenience of the system are realized. Pressure fluctuation can be greatly inhibited, stable operation of the compressor is guaranteed, the service life of the compressor is prolonged, the equipment failure rate can be reduced, the overall operation efficiency of the hydrogen refueling station is improved, and stable development of the hydrogen energy industry is promoted.

According to the gas-liquid mixing hydrogen refueling station system with the cooling capacity recovery and gradient utilization functions, flash steam of the low-temperature liquid hydrogen storage tank is collected and stored in the low-temperature hydrogen storage tank, the cooling capacity of the flash steam is fully utilized, cooling capacity is provided for the heat exchanger, high-pressure hydrogen is cooled, the cooling capacity of the low-temperature flash steam of the liquid hydrogen is fully utilized, and the cooling capacity of the low-temperature flash steam of the liquid hydrogen is fully utilized. Energy gradient utilization of cooling capacity is achieved, and loss of extra energy in the hydrogen refueling station is reduced; the flash steam obtained after heat exchange is further used for hydrogen compression, and reutilization of the low-temperature liquid hydrogen flash steam is achieved; the flash steam after heat exchange is pressurized and then cooled by using the cooling capacity of the high-pressure liquid hydrogen, and meanwhile, the heating gasification of the high-pressure liquid hydrogen is realized, namely the gasification of the pressurized liquid hydrogen in the liquid hydrogen refueling station and the cooling of a gas hydrogen pressurization process in the liquid hydrogen refueling station are coupled for heat exchange, so that the utilization efficiency of the heat and the cooling capacity is greatly improved; an external vaporizer is not needed for high-pressure liquid hydrogen gasification, an external cooler is not needed in the gas-hydrogen pressurization process, and energy consumption is greatly reduced.

The invention relates to a hydrogen refueling station inspection robot hydrogen leakage degree quantification method, belongs to the technical field of gas leakage detection, and solves the problems that existing hydrogen leakage quantification is poor in real-time performance and inaccurate in quantification result. The method comprises the steps that when the inspection robot detects that the hydrogen volume fraction exceeds a preset threshold value, a current position serves as an initial point position, and moving and sampling are carried out multiple times in the determined hydrogen leakage source direction; based on the sampling data of each point location, constructing a corresponding local hydrogen concentration field and determining the position of a hydrogen leakage source; based on the local hydrogen concentration field closest to the hydrogen leakage source, hydrogen leakage degree quantification parameters are obtained; obtaining a hydrogen leakage degree quantized value based on the hydrogen leakage degree quantized parameter; and obtaining a hydrogen leakage risk level based on the hydrogen leakage degree quantized value and a preset leakage risk level threshold interval.

The present application relates to a hydrogenation network node site selection method and service platform based on hydrogen source diversity, the method comprising: determining the planned number of oil and hydrogen stations to be sited in a target area and hydrogen vehicle traffic flow parameters on a plurality of target driving routes, generating corresponding first site selection decision information based on the planned number and the hydrogen vehicle traffic flow parameters; after receiving the hydrogenation decision information currently corresponding to each target driving route, updating the first site selection decision information using a preset genetic algorithm and the hydrogenation decision information to generate corresponding second site selection decision information, the hydrogenation decision information being solved using a solver based on a first objective function and the first site selection decision information; iterating the second site selection decision information based on the fitness of the second site selection decision information calculated based on the second objective function using a genetic algorithm and the corresponding hydrogenation decision information until the target site selection decision information is obtained, and determining a site selection result based on the target site selection decision information.

The invention relates to a hydrogen refueling station safety management method and system and a computer program product, and belongs to the technical field of hydrogen refueling station management. According to the response duration upper limit value and the detection range upper limit value of each sensor, and the position relation between the detection area corresponding to the sensor and the area where the hydrogen leakage point is located, determining the evaluation score of the sensitivity index of the sensor; according to the maintenance value of each maintenance item in the graded maintenance period of the filling equipment and the hydrogen leakage historical data of the filling equipment, obtaining an evaluation score of the health degree index of the filling equipment; determining a hydrogen refueling station safety assessment score according to the assessment score of the sensor sensitivity index and the assessment score of the filling equipment health degree index; and determining a hydrogen refueling station safety management scheme according to the hydrogen refueling station safety evaluation score. According to the method, the overall safety condition of the hydrogen refueling station can be quantified, the overall safety condition of the hydrogen refueling station can be obtained conveniently, the overall safety condition of the hydrogen refueling station can be evaluated conveniently, and a safety management scheme of the hydrogen refueling station can be formulated or adjusted conveniently.

The application discloses a kind of hydrogen station gas pressurization process temperature comprehensive management system and method, it is related to new energy technology field, hydrogen station gas pressurization process temperature comprehensive management system includes the data acquisition unit for gathering compressor temperature information and gas pressure information, data storage unit for storing gas reference temperature and various correlation, data processing unit for receiving and processing various gas information and heat exchange regulating component for adjusting gas temperature before and after compression, by setting the temperature adjusting device of two places of inlet gas, outlet gas, double regulation control is carried out to gas temperature, by collecting the temperature, pressure and other signals of gas, comprehensive control two temperature adjusting devices, the accurate control of gas temperature after compression is realized, by hydrogen station gas pressurization process temperature comprehensive management method, in the harsh use scene of different external environment temperature, temperature difference is larger, can output constant reference temperature, reference pressure compressed gas, increase the environmental adaptability of compressor.

The invention provides an emergency explosion suppression device and method for a pressurization module of a hydrogen refueling station, and the device comprises the pressurization module which is internally provided with a hydrogen compressor; the device is characterized in that the device further comprises a water storage tank, and water is contained in the water storage tank; and the water cooling system forms a loop outside the water tank, the water cooling system exchanges heat with the refrigerant compressor through a heat exchange module, and the water cooling system is further connected with the hydrogen compressor. And the emergency system can provide micro-droplets for the pressurization module when hydrogen leakage occurs in the pressurization module, so that the risk of explosion is reduced.

This hydrogen station includes a liquid hydrogen supply pipe for supplying liquid hydrogen from a liquid hydrogen reservoir to a liquid hydrogen pump, and a refrigerator. The hydrogen station is configured to cool the liquid hydrogen supply pipe using cold heat generated in the refrigerator.

The present application relates to hydrogen refueling station safety technical field, specifically to a kind of hydrogen refueling station safety monitoring system and monitoring method.Setting detection camera obtains the image in the range of hydrogen refueling station hydrogen refueling terminal, the posture of operator is analyzed from the image extracted, whether operation specification is determined;Monitoring center sends pressure data, temperature data and the infrared light intensity data obtained to analysis cloud, analysis cloud is according to pressure data, temperature data and infrared light intensity analysis hydrogen concentration, and concentration is fed back to monitoring center;Monitoring center controls the rotational speed of exhaust fan according to the detection result of hydrogen concentration.The hydrogen gas added by hydrogen refueling station is the hydrogen obtained by natural gas hydrogen production, other gas is used instead of detection hydrogen, solve the problem that infrared light cannot detect hydrogen.Detect temperature and pressure, and the result of detection is corrected, avoid the problem of detection sensor data drift caused by temperature and pressure.

The utility model relates to hydrogen storage device technical field discloses a kind of hydrogen station hydrogen storage pressure self-adapting regulating device, the utility model solves the problem of some hydrogen storage devices in existing when wind volume instantaneously increases or reduces, pressure change influences service life, large area storage hydrogen storage device is easy to knock.Provide a kind of hydrogen station hydrogen storage pressure self-adapting regulating device, including protective shell, the inside of protective shell is connected with inner bag layer, the lower portion of inner bag layer is connected with gas outlet, the lower portion of gas outlet is connected with regulating valve, the lower portion of regulating valve is connected with pressure relief tank, the outside of pressure relief tank is connected with bottom plate, the upper portion of bottom plate is connected with protection plate, the upper portion of bottom plate is provided with support mechanism, the inside of protective shell is also connected with mounting plate, the upper portion of mounting plate is connected with differential pressure sensor, pressure can be self-adaptingly regulated, prolong the service life of hydrogen storage equipment, protective shell is supported by support mechanism, guarantee its stable when using.

The CEMS server acquires weather information and hydrogen station information (S1). The CEMS server predicts the power demand of the microgrid after a specified period of time (S3). When the power demand of the microgrid after the specified period of time exceeds the contract power (YES at S5) and when the amount of power to be reduced exceeds a prescribed value (YES at S7), the CEMS server generates a hydrogen replenishment notification (S9) and transmits the generated hydrogen replenishment notification to the FCEV and / or the communication terminal (S11). The amount of power to be reduced is the difference between the contract power and the power demand.

The invention discloses a hydrogen storage and release device of a hybrid electric vehicle and a control method. A hydrogen compressor extracts hydrogen from a hydrogen station through a hydrogen inlet solenoid valve, and the hydrogen enters a magnesium hydride storage tank through a normally closed valve of an opened two-position three-way solenoid directional valve, a container of a thermomagnetic generator and an electric ball valve. The gear reducer motor is started to drive the magnesium hydride storage tank to rotate. Microwaves enter a circle of quartz tubes through an electric gate valve and then penetrate through the walls of the quartz tubes to enter a magnesium hydride storage tank, magnesium powder in the magnesium hydride storage tank is evenly heated, magnesium reacts chemically with hydrogen of 1-2 Mpar at the temperature of 300-400 DEG C, and magnesium hydride is generated. When hydrogen needs to be released, the gear reducer motor is started to drive the magnesium hydride storage tank to rotate. Microwaves enter a circle of quartz tubes through an electric gate valve and then penetrate through the walls of the quartz tubes to enter a magnesium hydride storage tank to be absorbed by magnesium powder, a large amount of heat is generated and transmitted to magnesium hydride, the magnesium hydride is heated to 200-300 DEG C to be subjected to decomposition reaction, and hydrogen is released.

The utility model provides an acoustic imaging holder telemetering device applied to hydrogen refueling station hydrogen leakage detection, which is characterized in that a vertical rod is vertically and fixedly arranged on a horizontal reference surface, a first L-shaped bracket is arranged at the top of the vertical rod, and a rotary holder comprises a vertical first rotary part and a transverse second rotary part; the bottom of the first rotating part is rotationally connected with the horizontal bearing face of the first L-shaped support through a first rotating flange, a second L-shaped support is arranged at the bottom of the second rotating part, the vertical edge of the second L-shaped support is rotationally connected with the bottom of the second rotating part through a second rotating flange, and the acoustic imager is fixedly arranged on the transverse edge of the second L-shaped support. Under the driving of the rotating holder, the acoustic imager can generate 360-degree circumferential rotation, and is used for capturing hydrogen detonation sound data in a circumferential area of the vertical rod in real time based on an array phased array acoustic technology, so that a hydrogen leakage detection function is realized.

The invention relates to a hydrogen refueling station having at least one heat exchanger system. The station allows the fuel to be replenished with both 350 bar and 700 bar of hydrogen at the same time.

The invention relates to the technical field of gas exchange stations, in particular to a plate trailer posture positioning system for a hydrogen refueling station, which comprises a bearing table, a steel framework is mounted on the top of the bearing table through bolts, a hydrogen exchange station cart is slidably arranged on the top of the steel framework, and a hydrogen exchange station trolley is slidably arranged on the inner side of the hydrogen exchange station cart. The hydrogen exchange device has the advantages that through cooperation of structures such as a hydrogen exchange cart and a hydrogen exchange trolley, the position of a hydrogen exchange structure can be flexibly adjusted through two sets of driving structures, and the hydrogen exchange device is convenient to use and high in practicability. The hydrogen exchange time is effectively shortened, the area is arranged on the top of the bearing table and used for temporarily storing the hydrogen exchange module, the hydrogen exchange module can be temporarily stored through the other half area of the top of the bearing table, carrying in the hydrogen exchange process is not needed, and the hydrogen exchange time is shortened.

The present application relates to the technical field of fire accident monitoring and early warning and fire rescue, in particular to a simulation deduction and auxiliary decision system for multi-point concurrent leakage accidents of hydrogen stations, which comprises an accident scene dynamic risk mapping module, which is used for receiving and gridding a rescue area, collecting real-time monitored hydrogen concentration, heat radiation flux and explosion overpressure values for each grid. In the present application, by receiving and gridding the rescue area, collecting real-time monitored hydrogen concentration, heat radiation flux and explosion overpressure values, and combining the path interruption probability caused by hydrogen storage and hydrogenation structure collapse, a unified grid risk value is obtained, and a time-varying three-dimensional risk field data covering the entire accident scene is established, which converts discrete and multidimensional on-site monitoring data into an intuitive global danger situation picture, enabling fire rescue commanders to master the evolution law of risk in space and time.

To provide a hydrogen station that can realize high energy efficiency by restraining the generation of boil-off gas in a liquid hydrogen supply pipe.SOLUTION: A hydrogen station comprises a liquid hydrogen supply pipe for supplying liquid hydrogen to a liquid hydrogen pump from a liquid hydrogen tank, and a refrigerator. The hydrogen station is configured so as to cool the liquid hydrogen supply pipe by using cold generated in the refrigerator.SELECTED DRAWING: Figure 1

The invention discloses a hydrogen station emptying system and method based on multi-stage depressurization, and belongs to the technical field of hydrogen station safety relief, the system comprises a multi-stage safety relief system, the first inlet end of the multi-stage safety relief system is communicated with an upstream main line, the second inlet end of the multi-stage safety relief system is communicated with a downstream main line, and the outlet end of the multi-stage safety relief system is communicated with emptying equipment; the outlet end of the main line block valve is provided with at least two levels of emptying regulating valves. From the perspective of system optimization and simplification, the problem of accidental spontaneous combustion in the emptying process of the hydrogen station is fully recognized and overcome, and emptying safety is ensured.

The invention discloses a hydrogen refueling station diaphragm compressor system and a control method. The technical problem that an O-shaped ring of an air inlet and outlet valve of a diaphragm compressor is frequently melted and fails is mainly solved. The diaphragm compressors in the diaphragm compressor system of the hydrogen refueling station are respectively connected with different hydrogen inlet pipelines through corresponding branches, so that the diaphragm compressors working under a low-pressure working condition can realize high-pressure hydrogen inlet by switching high-pressure hydrogen inlet pipelines, and the diaphragm compressors are cooled through high-pressure operation; and meanwhile, based on the T-S control model and a corresponding clustering radius self-adaptive adjustment mechanism, dynamic adaptive adjustment of the operating parameters of the diaphragm compressor system is achieved, so that the purpose of stepped increase of the operating duration of the diaphragm compressor is achieved, and the operating efficiency and safety of the diaphragm compressor system are improved.

The invention relates to the technical field of fire accident monitoring and early warning and fire rescue, in particular to a hydrogen refueling station multi-point concurrent leakage accident simulation deduction and auxiliary decision making system which comprises an accident site dynamic risk composition module, an accident site dynamic risk composition module, an accident site dynamic risk composition module and an accident site dynamic risk composition module, and the hydrogen concentration, the heat radiation flux and the explosion overpressure value monitored in real time are integrated. According to the method, a rescue area is received and gridded, hydrogen concentration, thermal radiation flux and explosion overpressure numerical values monitored in real time are integrated, and path interruption probabilities caused by collapse of hydrogen storage and hydrogenation structures are combined, so that a unified grid risk numerical value is obtained through calculation, and then time-varying three-dimensional risk field data covering a whole accident scene is established; discrete and multi-dimensional field monitoring data are converted into a visual global danger situation picture, so that fire rescue commanders can master evolution rules of risks in space and time.

The invention discloses a monthly optimal configuration method for an electricity-hydrogen energy supplement station considering new energy consumption, and the method comprises the steps: firstly, considering the source side uncertainty of wind power and photovoltaic power and the load side uncertainty of electricity conversion and hydrogenation, and constructing a multi-dimensional uncertainty basic scene through time sequence clustering; and secondly, according to the density distribution of the basic scene, further reducing a high-dimensional coupling probability scene by using an ISODATA algorithm, and further generating a typical scene for optimizing a configuration model. Then, a self-adaptive multi-layer moving average filtering algorithm is adopted to decompose the wind-solar combined power curve, high-frequency component configuration is used for optimizing a charging and battery swapping strategy of a battery swapping station, and low-frequency component configuration is provided for a hydrogen production station; and finally, by taking the minimum monthly comprehensive operation cost of the energy complementing station as an optimization target, solving a configuration result by adopting Gurobi to obtain a configuration scheduling strategy of the energy complementing station by the optimal configuration model of the electric hydrogen energy complementing station. According to the invention, on-site consumption of larger-capacity wind and light generating capacity can be realized, and the reliability is high.

The embodiment of the application relates to the hydrogen energy utilization technical field, and discloses a kind of exhaust superhigh pressure control valve group for hydrogen station compressor and hydrogen storage system.The exhaust superhigh pressure control valve group for hydrogen station compressor in it includes valve body, first stop valve, first drive piston, first main valve spool, first solenoid valve assembly, second drive piston, second main valve spool, second solenoid valve assembly and second stop valve;Valve body is provided with two ends respectively through to the first channel of valve body surface, one end is communicated with the first channel, the second channel is communicated with the other end through to the valve body surface, the third channel that communicates the first channel and the second channel, and the fourth channel and the fifth channel that are communicated to the first channel respectively;First stop valve is arranged on valve body.The exhaust superhigh pressure control valve group for hydrogen station compressor and hydrogen storage system provided in the application can effectively control hydrogen flow and ensure the safety of valve components in the process of hydrogen high-pressure circulation.

The utility model relates to the technical field of liquid hydrogen storage, in particular to an internal heat exchange system of a skid-mounted liquid hydrogen refueling station. The top of the liquid hydrogen storage tank is connected with the buffer tank through a pipeline, the buffer tank is connected with a gas inlet of the hydrogen booster pump through a pipeline, a gas outlet of the hydrogen booster pump is connected with the first-stage hydrogen cooler through a pipeline, and the first-stage hydrogen cooler is connected with the high-pressure buffer tank through a pipeline. The high-pressure buffer tank is connected with a secondary hydrogen cooler through a pipeline; the bottom of the liquid hydrogen storage tank is connected with the liquid hydrogen bottle through a pipeline, a liquid outlet of the liquid hydrogen booster pump is connected with an inlet of the heat exchange and cold supply assembly through a pipeline, and an outlet of the heat exchange and cold supply assembly is connected with the high-pressure buffer tank through a pipeline. The first-stage hydrogen cooler and the second-stage hydrogen cooler provide heat sources for the heat exchange and cold supply assembly to enable liquid hydrogen to be gasified, and the heat exchange and cold supply assembly provides cold sources for the first-stage hydrogen cooler and the second-stage hydrogen cooler to cool hydrogen, so that a large amount of energy can be saved, and the purposes of saving energy and reducing consumption are achieved.

The invention discloses a hydrogen refueling station equipment integrity knowledge graph application system and method, and belongs to the technical field of hydrogen energy infrastructure full life cycle management. The process knowledge extraction module is used for extracting a triple containing a process link, a process parameter and a standard value from a process document, extracting an association relationship about the process link, an executor and time from an operation record, and establishing an association relationship between the process link and equipment and an association relationship between process parameter abnormity and equipment failure; the knowledge graph architecture storage module is used for constructing and storing a multi-level knowledge graph architecture, and the multi-level knowledge graph architecture comprises a base layer, a process layer, an entity layer, a relation rule layer, a device three-dimensional graph layer and a risk management decision layer. The problems that an existing hydrogen refueling station equipment integrity knowledge graph lacks process dimension integration and equipment and process collaborative management capacity is weak are solved.

The application discloses a kind of based on deep learning hydrogen station dynamic risk assessment method, it is related to hydrogen risk assessment technical field, the method pre-acquires training dataset, based on training dataset and trains hydrogen concentration space-time coupling prediction model;Then real-time monitoring hydrogen station operating state parameter, based on hydrogen station operating state parameter and identifies ignition source energy and ignition source space-time coordinate feature;Again based on the environment parameter and leakage source parameter of real-time acquisition, using hydrogen concentration space-time coupling prediction model predicts hydrogen cloud space-time coordinate feature, quantifies the overlap probability of ignition source space-time coordinate feature and hydrogen cloud space-time coordinate feature, generates the ignition probability of different ignition source on discrete time point based on overlap probability and ignition source energy;Finally, construct dynamic hydrogen leakage risk assessment model, based on the ignition probability value generated using dynamic hydrogen leakage risk assessment model generates risk parameter, reduces invalid alarm, makes hydrogen leakage accident processing more accurate and efficient.

The embodiment of the application relates to the hydrogen energy utilization technical field, and discloses a kind of hydrogen station compressor intake control valve group and hydrogen storage system.The hydrogen station compressor intake control valve group in it includes valve body, first stop valve, solenoid valve assembly, drive piston, main valve spool and second stop valve;The outer surface of valve body is respectively provided with inlet, outlet and vent, the inner portion of valve body is respectively provided with first channel communicating inlet and outlet, second channel communicated with first channel, and third channel communicating first channel and vent;First stop valve is arranged on valve body, and the valve core of first stop valve is located at the position adjacent to inlet in first channel, for controlling the communication / disconnection of first channel;Solenoid valve assembly is arranged on valve body, and the valve core of solenoid valve assembly is used to control the communication / disconnection of second channel.The hydrogen station compressor intake control valve group and hydrogen storage system provided by the embodiment of the application can improve the integration of valve components in the system.

[Problem] To make it possible to receive light from a hydrogen flame and accurately detect the hydrogen flame. [Solution] A hydrogen flame detection device 10 comprises a first light reception unit 18 that receives light from a hydrogen flame in a characteristic wavelength band that is specific to hydrogen flames, a second light reception unit 22 that receives light from the hydrogen flame in a wavelength band that is different from the characteristic wavelength band, and a hydrogen flame determination unit 28 that detects the hydrogen flame on the basis of a first light reception signal obtained from the light in the characteristic wavelength band received by the first light reception unit 18 and a second light reception signal obtained from the light in the wavelength band that is different from the characteristic wavelength band received by the second light reception unit 22.

The invention discloses a hydrogen refueling station multi-mode data acquisition method based on an equipment failure mode and terminal equipment, and belongs to the technical field of hydrogen energy infrastructure safety monitoring. The multi-level image intelligent detection algorithm comprises three levels of bottom-layer multi-mode feature extraction, middle-layer failure feature classification and high-layer multi-mode fusion decision; (2) analyzing a risk level corresponding to the failure mode in combination with a cloud equipment knowledge graph, wherein the knowledge graph cloud equipment knowledge graph comprises equipment manufacturing, installation, process, maintenance and detection data; and (3) dynamically scheduling the collection frequency and range of the terminal data collector according to the risk level and failure mechanism sorting result. The terminal device comprises an image acquisition module, a sensor module and a communication module. The problems that an existing hydrogen refueling station data acquisition method is fixed in strategy, low in failure recognition precision and insufficient in risk association are solved.

The invention discloses a natural gas station-to-hydrogen station service pressure optimization method, and belongs to the technical field of hydrogen station design. According to the method, a thermal radiation evaluation model of a hydrogen / natural gas station at the same aperture and different pressure scales is established, and hydrogen and natural gas leakage consequence influence ranges are compared based on leakage consequence comparison results; and establishing an in-service natural gas pipeline-to-hydrogen service operation pressure correction model with equal influence and consequences, and actively optimizing the highest operation pressure after conversion in combination with the actual transmission and distribution situation to ensure that the fireproof spacing meets the lower gear standard of the natural gas station.