82 results about "Hydrogen flow" patented technology

A highly efficient large-flow mixing device for natural gas and hydrogen for gas-fired power plants, characterized in that it comprises: a natural gas line on which a first flow meter and a first Venturi tube are arranged; a hydrogen line on which a second flow meter, a flow control valve and a second Venturi tube are arranged; a mixed gas line on which, in the direction of gas flow, a static mixer, a swirl mixer and a concentration meter are arranged sequentially; a PLC control unit which is electrically connected to the first flow meter, the second flow meter, the flow control valve and the concentration meter respectively; wherein the natural gas line and the hydrogen line are each connected to the inlet of the static mixer;wherein the PLC control unit is designed to calculate the target hydrogen flow rate and control the opening degree of the flow control valve based on the current natural gas flow rate detected by the first flow meter and a preset mixture concentration; wherein the PLC control unit is further designed to correct the opening degree of the flow control valve in real time based on the concentration signal of the mixed gas measured by the concentration meter.

The application discloses a growth method for improving pit defects of a silicon carbide epitaxial wafer, and comprises the following steps: cleaning a silicon carbide substrate and placing the substrate in an epitaxial reaction chamber, introducing hydrogen, and performing high-temperature annealing treatment; increasing the hydrogen flow and the reaction chamber temperature, and performing hydrogen etching; reducing or maintaining the reaction chamber temperature, introducing a carbon source and a silicon source, and growing a buffer layer on the substrate surface; maintaining the gas introduction, increasing the reaction chamber temperature, and growing a gradient layer on the buffer layer; reducing the reaction chamber temperature, simultaneously opening a center gas source and an edge gas source, and growing a base epitaxial layer on the gradient layer; maintaining the reaction chamber temperature, adjusting the edge gas source flow to form a gradient flow, and growing a flat epitaxial layer on the base epitaxial layer. Through the substrate pretreatment-low rate epitaxy-high rate flat epitaxy, combined with the gradient process filling process, the application realizes the step-by-step filling and surface flattening of the pit defects, and effectively reduces the number of Pit defects and the epitaxial thickness uniformity.

This invention discloses a modeling method, electronic device, and storage medium for hydrogen energy systems. The method includes: establishing a hydrogen production mass flow model for an electrolyzer, and using a multi-condition linearization method to handle the nonlinear operating efficiency of the electrolyzer; establishing a storage mass flow model for a hydrogen storage tank, dynamically characterizing its effective capacity based on the tank's physical volume, operating pressure, and ambient temperature parameters; constructing a hydrogen mass flow bus, linking the electrolyzer's hydrogen production variable and the storage tank's hydrogen filling variable to this bus, and establishing hydrogen mass flow balance constraints among the models to characterize that at any given time, the total amount of hydrogen flowing into the bus equals the total amount flowing out. This invention solves the problem of insufficient accuracy in traditional models, achieving a balance between high accuracy of the equipment model and high solution efficiency for the optimization problem, providing a reliable modeling foundation for the optimal scheduling of hydrogen-containing integrated energy systems.

This ammonia synthesis system comprises: a catalytic reactor which accommodates a catalyst and synthesizes ammonia from hydrogen and nitrogen; a separator which separates an ammonia-containing synthesis gas taken out from the catalytic reactor into ammonia and an unreacted gas that contains hydrogen and nitrogen; a supply line which supplies a raw material gas to the catalytic reactor, wherein the raw material gas contains a recycle gas that is at least a portion of the unreacted gas, raw material hydrogen that is supplied from a hydrogen supply source, and raw material nitrogen that is supplied from a nitrogen supply source; and a control unit which controls the ratio of the hydrogen flow rate to the nitrogen flow rate in the supply line.

Hydrogen supply device comprising at least two tanks configured to store hydrogen in liquid and supercritical states, respectively. The invention relates to a hydrogen supply device (18) comprising: at least one first tank (20) configured to store hydrogen in a liquid state at a pressure below 13 bar; at least one second tank (22) configured to store hydrogen in a supercritical state at a pressure greater than or equal to 13 bar; at least one upstream portion (26) comprising at least one first hydrogen flow control system (32, 32', 32'') configured to regulate the amount of hydrogen flowing from the first tank (20) to the second tank (22); at least one downstream portion (28) connecting the second tank (22) and a hydrogen-powered system (16). The invention also relates to an aircraft comprising at least one such supply device. Figure 2

The application is suitable for the technical field of chemical waste gas treatment, and provides a low-energy-consumption hydrogen peroxide production waste gas deep treatment process and device, wherein the low-energy-consumption hydrogen peroxide production waste gas deep treatment process comprises the following steps: S1, constructing a first evaluation model: constructing according to the ratio of the temperature difference between the inlet and outlet of the condenser and the energy consumption of the refrigerating machine, the pressure fluctuation variance of the pressure swing adsorption unit and the pressure fluctuation frequency of the pressure swing adsorption unit; outputting a device health comprehensive index through the first evaluation model; S2, constructing a second evaluation model: constructing according to the collected recovery hydrogen flow, the unit waste gas treatment quantity power consumption, the change rate of the oxygen content and the concentration ratio; outputting an energy efficiency economic comprehensive index through the second evaluation model. In the application, when the system efficiency comprehensive index is lower than a preset threshold value, the optimization condensing temperature is outputted by the regulation and control model, so as to avoid the refrigeration overload or insufficient treatment caused by the traditional fixed temperature setting value under the environmental temperature fluctuation.

This utility model discloses an integrated high-efficiency heat exchange solid-state hydrogen storage system, relating to the field of solid-state hydrogen storage technology. It includes a hydrogen storage core module, a heat exchange circulation module, and a pressure control module. This integrated high-efficiency heat exchange solid-state hydrogen storage system utilizes a spiral heat exchange tube bundle tightly fitted to the outer wall of the hydrogen storage container, greatly increasing the heat exchange area and significantly improving heat exchange efficiency. This effectively solves the temperature control problem caused by thermal effects during hydrogen absorption and desorption of solid-state hydrogen storage materials. The built-in electric heating element actively provides the heat required for desorption, ensuring the stability and speed of the hydrogen release process. The pressure control module can accurately stabilize the inlet pressure, avoiding the impact of pressure fluctuations on the hydrogen storage material and improving system safety. Simultaneously, the system has high integration and a compact structure, enhancing protection capabilities. Through uniform hydrogen flow and efficient thermal management, it comprehensively improves hydrogen storage density, hydrogen charging and discharging rates, and system operational stability.

The application provides a hydrogen-ammonia-powered battery power generation efficiency improving method and device, equipment and medium, and belongs to the technical field of hydrogen-ammonia batteries. The method comprises the following steps: acquiring current working condition parameters of a hydrogen-ammonia-powered battery power generation system; determining a solution space based on the matching degree of the current working condition parameters and each historical working condition parameter in a historical database; iteratively processing a gas flow combination in the hydrogen-ammonia-powered battery power generation system based on the solution space to obtain a target gas flow combination; wherein the target gas flow combination comprises a target ammonia flow, a target hydrogen flow and a target air flow; and controlling the hydrogen-ammonia-powered battery power generation system based on the target ammonia flow, the target hydrogen flow and the target air flow to improve the hydrogen-ammonia-powered battery power generation efficiency. The hydrogen-ammonia-powered battery power generation efficiency improving method and device, equipment and medium provided by the application can improve the hydrogen-ammonia-powered battery power generation efficiency.

This invention proposes an integrated hydrogen detection and elimination device and method, comprising: an environmental detection module for detecting hydrogen concentration; an alarm unit that generates a graded alarm signal when the hydrogen concentration reaches a preset alarm threshold; an intake pump for drawing in ambient gas; a filtration module for purifying the intake gas; an elimination module that causes hydrogen flowing over its surface to undergo a catalytic oxidation reaction with a loaded catalyst; an internal detection module for detecting the temperature and pressure inside the device; and a control module that receives the graded alarm signal and outputs control commands to dynamically adjust the intake pump and the elimination module. This invention, through modular integrated design, achieves integrated hydrogen detection-alarm-control-elimination, constructing a closed-loop safety protection system with multi-parameter real-time detection, intelligent graded alarm, and efficient catalytic elimination. The device responds rapidly, can adaptively adjust operating parameters according to leakage risk, has high elimination efficiency, and strong reliability, making it suitable for real-time hydrogen leakage protection in fields such as hydrogen energy and nuclear power.

The application relates to an EUV process waste gas treatment device and method, wherein the EUV process waste gas treatment device comprises a water tank assembly, a reaction tower assembly and a washing tower assembly are connected to the water tank assembly; the reaction tower assembly comprises a gas inlet top cover, a reaction cavity tower section and a cooling spray tower section which are sequentially arranged; a plurality of process waste gas inlets and a plurality of first combustion-supporting gas inlets are connected to the gas inlet top cover and used for respectively introducing process waste gas and combustion-supporting gas into the gas inlet top cover; the plurality of process waste gas inlets are inclined and centered with respect to the axis of the gas inlet top cover and cross each other; the reaction cavity tower section is connected with at least two second combustion-supporting gas inlets which are used for externally supplementing combustion-supporting gas into the reaction cavity tower section and are used for forming multi-stage layered combustion in the gas inlet top cover and the reaction cavity tower section. The application can be applied to waste gas treatment with hydrogen flow varying in a large range of 0-500 SLM, and the treatment efficiency is effectively improved.

This application proposes a fuel cell ejector-hydrogen circulation pump series system and control method. The system includes: an ejector with an inlet for receiving hydrogen from a hydrogen supply source; a hydrogen circulation pump with its inlet connected to the outlet of the ejector; a fuel cell stack with its hydrogen inlet connected to the outlet of the hydrogen circulation pump; a gas-liquid separator with its inlet connected to the hydrogen outlet of the fuel cell stack, and its gas outlet connected to the return inlet of the ejector; and a controller electrically connected to the hydrogen circulation pump. The ejector and the hydrogen circulation pump are arranged in series along the hydrogen flow path. The controller selectively turns the hydrogen circulation pump on or off according to the operating current density of the fuel cell system, so that the ejector and the hydrogen circulation pump can achieve hydrogen circulation collaboratively or independently. The technical solution proposed in this application improves the hydrogen circulation capability under low-load conditions and the anode humidity compensation capability under rapid load conditions.

This invention discloses a pressurized heat exchange hydrogen supply device and method for a solid-state hydrogen storage system, relating to the field of solid-state hydrogen storage technology. The device includes: a filter for filtering hydrogen output from the solid-state hydrogen storage system; a first hydrogen booster for increasing hydrogen pressure to a target range; a first heat exchanger for reducing the pressurized hydrogen to a preset temperature range; a regulating valve for regulating hydrogen flow rate; and a pressure transmitter, temperature transmitter, and flow meter for measuring hydrogen pressure, temperature, and flow rate, respectively. A PLC dynamically adjusts the operating status of the first hydrogen booster, the opening of the regulating valve, and controls the start and stop of the first heat exchanger. This invention integrates the pretreatment unit, the pressurized heat exchange unit, and the flow regulation unit into a single unit. It employs an automatic control system with a PLC controller at its core, combining the real-time acquisition of outlet parameters by the temperature transmitter, pressure transmitter, and flow meter to dynamically adjust the opening of the flow regulating valve, achieving constant control of the output pressure or flow rate.

This invention discloses an adaptive volumetric burner, comprising a combustion chamber, a gas mixing assembly connected to the combustion chamber for mixing anode exhaust gas and combustion air before feeding them into the combustion chamber, and a volume adjustment assembly disposed inside the combustion chamber for real-time adjustment of the combustion chamber's working space. The adaptive volumetric burner of this invention can adapt to changes in hydrogen flow rate by adjusting the combustion chamber's spatial structure in real time, and integrates backfire prevention, flameout prevention, and exhaust gas waste heat recovery functions. This effectively solves the problems of incomplete and unstable combustion under varying operating conditions of fuel cells, ensuring combustion stability and improving system efficiency. This invention also discloses a fuel cell system.

This utility model belongs to the field of one-way valves, specifically a one-way valve for a vehicle-mounted hydrogen supply device, including a valve body and a valve stem. The valve body has a sliding cavity inside, and a valve chamber is formed at the end of the sliding cavity. The valve stem is slidably connected to the inside of the sliding cavity. An outlet pipe is fixedly connected to the side of the valve chamber, and an inlet pipe is fixedly connected to the side of the sliding cavity. The valve stem has a through hole inside, and a through groove is formed at one end of the through hole. In use, hydrogen is injected into the sliding cavity, then passes through the through groove into the through hole, and then enters the valve chamber through the vent hole on the valve stem, before being discharged from the outlet pipe. When hydrogen flows back, a spring pulls the valve stem to move, causing the valve stem to fit against the inner wall of the valve chamber, and the end of the vent hole blocks the valve chamber, thereby cutting off the hydrogen flow channel. With this structural design, the hydrogen does not contact the spring, thus reducing the possibility of hydrogen causing contact with the elastic spring and producing a whistling sound.

The present application relates to the field of extreme ultraviolet lithography protective film preparation, in particular to a preparation method of a single-walled carbon nanotube film with high strength and high extreme ultraviolet transmittance. In the process of growing single-walled carbon nanotubes by floating catalyst chemical vapor deposition, selenium is used as a growth promoter, and the weak etching effect of hydrogen flow is regulated to reduce amorphous carbon deposition and prolong catalyst life, so as to realize the controlled preparation and in-situ dry collection of single-walled carbon nanotubes with high purity, high crystallinity and large aspect ratio. The diameter distribution of the single-walled carbon nanotubes is 1.6-3 nm, the aspect ratio is >30000, the Raman spectrum G / D ratio is >150, and the purity of the prepared single-walled carbon nanotubes is >98wt.%. The prepared single-walled carbon nanotube film not only has excellent mechanical properties but also has adjustable EUV transmittance, and at the same time meets the particle interception and EUV high transmittance requirements of the EUV lithography protective film, and is an ideal protective film for EUV lithography mask.

The application provides a one-time programmable device forming method, which comprises the following steps: providing a semiconductor device, which comprises a floating gate and a control gate located on an epitaxial layer and arranged at intervals, and a source end and a drain end located in the epitaxial layer and on both sides of the floating gate and the control gate, and an interlayer dielectric layer is further formed on the floating gate and the control gate; forming a via in the interlayer dielectric layer, and filling the via with tungsten by introducing WF6 gas and hydrogen, so as to form a via structure connected with the source end and / or the drain end, wherein, during the tungsten filling process, when the filling operation is interrupted and / or the hydrogen flow is insufficient, the following operations are performed: the temperature of the via filling process condition is set to 300-500 DEG C, the hydrogen flow is set to 500-700 sccm, and the hydrogen introduction time is set to 30-50 s; and the one-time programmable device is filled with tungsten by using the via filling process condition. The application reduces the occurrence of test failure of data retention.

This invention provides a BCC solid-state hydrogen storage safety control system, comprising: a hydrogen storage device having a hydrogen storage tube with a built-in BCC hydrogen storage alloy, a hydrogen charging valve for controlling the opening and closing of the hydrogen storage tube, and a coolant channel; a cooling system forming a closed-loop circulation loop with the coolant channel for supplying coolant to the hydrogen storage device; and a safety interlock control module for collecting safety-related parameters of the hydrogen storage device, cooling system, and environment. When the parameters meet the first-level, second-level, and third-level interlock conditions, the module correspondingly activates the first-level interlock to open the hydrogen charging valve, the second-level interlock to adjust the hydrogen flow rate and the operating parameters of the cooling system, and the third-level interlock to close the hydrogen charging valve. The BCC solid-state hydrogen storage safety control system of this invention features high integration, good safety, and high intelligence. Through an optimized heat exchange structure, rigorous multi-level interlock logic, and a comprehensive fault diagnosis model, the system achieves efficient thermal management, full-process safety protection, and intelligent fault handling during the hydrogen charging process.

The application relates to an EUV process waste gas treatment device and method, wherein the EUV process waste gas treatment device comprises a water tank assembly, a reaction tower assembly and a washing tower assembly are connected to the water tank assembly; the reaction tower assembly comprises a gas inlet top cover, a reaction cavity tower section and a cooling spray tower section which are sequentially arranged; a plurality of process waste gas inlets and a plurality of first combustion-supporting gas inlets are connected to the gas inlet top cover and used for respectively introducing process waste gas and combustion-supporting gas into the gas inlet top cover; the plurality of process waste gas inlets are inclined and centered with respect to the axis of the gas inlet top cover and cross each other; the reaction cavity tower section is connected with at least two second combustion-supporting gas inlets which are used for externally supplementing combustion-supporting gas into the reaction cavity tower section and are used for forming multi-stage layered combustion in the gas inlet top cover and the reaction cavity tower section. The application can be applied to waste gas treatment with hydrogen flow varying in a large range of 0-500 SLM, and the treatment efficiency is effectively improved.

The present invention concerns an advantageous furnace for melting vitrifiable materials, comprising (i) a melting tank providing a melt; (ii) a fining tank with combustion heating means alimented with oxygen and hydrogen and providing a refined melt and water steam; (iii) at least one neck separating the melting and fining tanks; (iv) inlet means; (v) outlet means; said furnace further comprising (vi) a steam electrolysis unit to electrolyse water steam into a hydrogen flow and an oxygen flow, and (vii) a circuit to conduct hydrogen flow from steam electrolysis unit towards combustion heating means at the fining tank.

This invention discloses a device for preparing and storing high-quality hydrogen, including a hydrogen production unit, a drying unit, a control unit, and a hydrogen storage unit. A shut-off valve is installed on one of the pipelines and is electrically connected to the control equipment for regulating the on / off state and flow rate of oxygen delivery. This invention constructs a dual gas-liquid separation mechanism of "centrifugal force + gravity" and a self-cleaning system for the screen plate through components such as a servo motor, rotating rod, spiral blades, and corrugated screen plate. The rotating spiral blades apply a stable centrifugal force to the hydrogen flow, throwing fine water droplets against the container wall and guiding them out through a conical chamfer. The corrugated screen plate increases the contact area through its corrugated structure to achieve secondary interception. Simultaneously, the high-frequency vibration driven by a vibrating hammer and spring prevents droplet accumulation and blockage, effectively solving the shortcomings of traditional devices such as low efficiency of simple gravity sedimentation separation, easy filter clogging, and frequent shutdowns for maintenance.

The application belongs to the technical field of hydrogen-oxygen atomizing device, and relates to a gas generating device with adjustable hydrogen-oxygen ratio, which comprises a hydrogen-oxygen generating device, an oxygen generating device and a control device, the hydrogen-oxygen generating device is used for generating hydrogen and oxygen with a ratio of 2:1, the oxygen generating device is used for generating oxygen with a concentration of 93%+ / -3%, and the control device is used for controlling the flow generated by the hydrogen-oxygen generating device and the flow of the oxygen generating device, so as to adjust the hydrogen-oxygen ratio of the output. The application controls the flow of each device through a control system, widens the ratio mode of hydrogen-oxygen mixed gas, meets the oxygen flow demand on the basis of meeting the hydrogen flow demand, reduces the manufacturing difficulty in the application occasion requiring large oxygen flow, saves energy, widens the application scene of hydrogen-oxygen mixed gas, and provides a more comprehensive gas supply mode for treating respiratory diseases by using hydrogen.

This invention discloses a dynamic control method and system for natural gas hydrogen blending transportation. The method involves collecting multi-source data from natural gas pipelines; processing and performing operational condition correction calculations on the collected multi-source data to construct a multi-dimensional dataset; inputting the multi-dimensional dataset into a preset hydrogen blending ratio calculation model to calculate the target value of the safe hydrogen blending ratio under the current operating conditions; calculating the theoretical hydrogen flow rate setpoint based on the target value of the safe hydrogen blending ratio; dynamically adjusting the opening of the hydrogen injection valve through an adaptive control algorithm to make the measured hydrogen blending ratio approach the target value of the safe hydrogen blending ratio; calculating the hydrogen embrittlement safety index based on the measured hydrogen blending ratio, the target value of the safe hydrogen blending ratio, and the service life of the pipeline; and continuously monitoring and providing feedback to form a closed-loop control system. This system enables precise and safe dynamic adjustment of the hydrogen blending ratio based on the corrosion defect characteristics and service conditions of the natural gas pipeline, thereby improving the safety and efficiency of natural gas hydrogen blending transportation.

The application relates to a kind of solid oxide fuel cell gas supply system coordinated control method, wherein including offline training: setting two intelligent agents, hydrogen intelligent agent and air intelligent agent respectively, the hydrogen intelligent agent and air intelligent agent are used to control the hydrogen flow rate and air flow rate into solid oxide fuel cell respectively, then the intelligent agent is trained using the way of centralized learning, dispersed execution;It also includes online application: according to the coordinated control strategy model of training completion, hydrogen intelligent agent detects the hydrogen flow and output voltage of solid oxide fuel cell, and air intelligent agent controls oxygen flow by adjusting air compressor motor voltage.Compared with prior art, the application first applies the content of distributed deep reinforcement learning to the energy management field of solid oxide fuel cell gas supply system, combines artificial intelligence technology with traditional gas flow control technology to improve the efficiency of solid oxide fuel cell gas supply system.

The utility model discloses an air cooling fuel cell system integrated structure belongs to fuel cell technical field. The integrated structure is to set up fuel cell stack and its auxiliary components on the air deflector cover, and the side plate of air deflector cover and the cathode bottom plate, anode bottom plate of electric pile are connected to form the side surrounding casing structure of fuel cell stack, and the opposite side of fuel cell stack and fan is without side plate and opens to the environment, the fan in air management subassembly provides fresh air to the cooling and cathode flow channel on the polar plate in fuel cell stack, in hydrogen circulation subassembly, hydrogen passes control valve and enters hydrogen into the stack mouth on the cathode bottom plate, supplies to the anode manifold entrance of fuel cell stack through hydrogen flow channel in the cathode bottom plate, and the hydrogen that is not consumed is led out again by hydrogen out of the stack mouth on the cathode bottom plate and enters hydrogen circulation pipeline, and it is controlled by circulating pump to return to hydrogen into the stack mouth on the cathode bottom plate again. The utility model optimizes and reduces the overall size of fuel cell, guarantees the heat dissipation performance and improves the space utilization of fuel cell.

The application discloses an electrolysis hydrogen removal device of a ship ballast water treatment system and a pressurized hydrogen removal method, and belongs to the field of marine environmental engineering. The device comprises a cyclone separator, a water inlet pipeline, a gas outlet pipeline and a liquid level meter; an automatic adjusting valve is connected with the liquid level meter, the opening of the automatic adjusting valve is adjusted according to the data monitored by the liquid level meter, the pressure in the barrel of the cyclone separator is controlled to be 2-7 bar, and the hydrogen flow rate in the gas outlet pipeline is controlled to be 0.5-15 m / s. The application is applied to the field of marine environmental engineering, solves the technical problem that the existing hydrogen removal method of the ship ballast water treatment system adopts more system internal module settings, and increases the risk of system operation failure, and has the characteristics that the generated sodium hypochlorite solution after hydrogen removal of the electrolysis device can be directly injected into the main pipeline under pressure, and an additional dosing pump is not needed for pressurized injection.

The application discloses a tungsten carbide powder with uniform crystal grains and a preparation method thereof. The preparation method of the tungsten carbide powder with uniform crystal grains comprises the following steps: S1, raw material reduction treatment: obtaining ultrafine tungsten powder by reverse hydrogen reduction of tungsten oxide raw material; the hydrogen flow of the reverse hydrogen reduction is 600-750 m 3 / h, and the temperature of the reverse hydrogen reduction is divided into six zones: the temperature of the first zone is 900-950 DEG C, the temperature of the second zone is 900-950 DEG C, the temperature of the third zone is 900-950 DEG C, the temperature of the fourth zone is 900-950 DEG C, the temperature of the fifth zone is 950-1030 DEG C, and the temperature of the sixth zone is 980-1050 DEG C; S2, preparation of tungsten-carbon mixed powder: obtaining tungsten-carbon mixed powder by carbon preparation on the ultrafine tungsten powder, and the carbon content of the tungsten-carbon mixed powder is 6.08-6.18%; and S3, preparation of ultrafine tungsten carbide powder: sequentially performing high-temperature carbonization and airflow crushing on the tungsten-carbon mixed powder. The preparation method makes the WO2 performance consistent, thereby laying a uniform foundation for the phase change process from WO2 to WO X .

The application discloses a kind of offshore integrated energy platform hydrogen energy storage system modeling method and device, belong to integrated energy technical field;Method includes: establishing the multi-energy coupling structure including electrolytic cell, compressor, depleted oil and gas reservoir and hydrogen fuel cell;From energy conservation and mass balance, the dynamic constraint model of internal pressure, temperature, capacity and flow of the depleted oil and gas reservoir is established;Based on energy transfer and system balance principle, the connection model of hydrogen energy between preparation, compression, storage and reuse links is constructed, to obtain the total power consumption, total power supply and internal hydrogen flow balance relationship of the hydrogen energy storage system;Based on the multi-energy coupling structure, dynamic constraint model and connection model, select the self-loss rate of the depleted oil and gas reservoir hydrogen storage, injection process efficiency, production process efficiency and the offshore integrated energy platform modification cost as variable, carry out parameter sensitivity and robustness analysis, assess the energy conversion efficiency and economic performance of the hydrogen energy storage system.