3738results about "Container filling methods" patented technology

The storage tank comprises a wall and an internal containing space defined by the wall, the wall comprises a first layer assembly and a second layer assembly which are arranged in a stacked mode, the first layer assembly is located on the inner side of the second layer assembly, the first layer assembly comprises a first shielding layer and a first heat insulation module located on the outer side of the first shielding layer, and the second layer assembly comprises a second shielding layer and a second heat insulation module located on the outer side of the second shielding layer. The second layer assembly comprises a second shielding layer directly connected with the first heat insulation module and a second heat insulation module located on the outer side of the second shielding layer, the first shielding layer and the second shielding layer are both made of metal corrugated plates, and the metal corrugated plates are provided with crisscrossed corrugations. According to the storage tank, an invar plate is not adopted, the overall production cost is reduced, the problem of difficult supply is solved, the two layers of corrugated metal plates have good tensile strength, pressure caused by contents and airflow to the wall can be compensated, and the storage tank can keep good performance for a long time.

The invention discloses a liquefied natural gas (LNG) early warning system and method for dynamically monitoring an LNG ship, and the method comprises the steps: collecting the output amount, cabin pressure, environment temperature and pump operation parameters in real time, combining a multi-factor correction model to dynamically calculate the actual evaporation rate, and reversely setting an allowable evaporation rate threshold according to the maximum capability of a BOG processing system; the evaporation rate is ensured to be within a safe range through a grading alarm mechanism and safety regulation and control measures; the problem that in the prior art, static testing cannot reflect evaporation rate changes in real time is solved. Liquefied natural gas whole life cycle monitoring and performance degradation early warning of the LNG ship are achieved.

The invention relates to an industrial gas tank storage place early warning method and system. The method comprises the following steps: acquiring image time sequence data at least representing temperature field distribution of a target monitoring area, generating a temperature image sequence, determining area temperature change characteristics and tank body surface reflection characteristics in the area, and generating reflection area probability distribution of the target monitoring area to determine initial gas leakage probability data of the target monitoring area; generating baseline feature data at least representing background thermal field distribution of the target monitoring area; and performing association processing on the initial gas leakage probability data and the baseline feature data to generate fusion time sequence features and determine a gas leakage diffusion weight so as to correct the initial gas leakage probability data to obtain corrected gas leakage probability data. By adopting the method, the gas leakage probability can be accurately judged by comprehensively utilizing temperature field time sequence information, tank body surface reflection characteristics and background thermal field distribution characteristics under the condition of a complex background thermal field, so that early warning is realized.

Disclosed is a method of fastening a cap of a container, the method including: specifying a screw thread engagement point of a cap and a neck ring of a container; and aligning the engagement point with a fastening start position of the cap and fastening the cap to the neck ring, in which the specifying of the engagement point includes detecting the engagement point by rotating the cap in a reverse direction in a state where the cap is seated on the neck ring.

The invention discloses a corrugated plate for a low-temperature liquid cargo system, a shielding layer and the low-temperature liquid cargo system. The cryogenic liquid cargo system may be a storage tank or container for storing cryogenic liquid, such as liquefied natural gas. The corrugated plate comprises a corrugated plate plane layer and corrugations formed on the corrugated plate plane layer, the corrugations comprise first corrugations and second corrugations intersecting with the first corrugations, and each of the first corrugations and the second corrugations is provided with a protruding part, a concave part and a twisting part in the longitudinal extending direction of the first corrugations and the second corrugations. The convex part and the concave part are connected together through the torsion part in the longitudinal extending direction, the convex part protrudes towards the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer, and the concave part protrudes away from the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer. According to the scheme, the convex-concave matching structure is arranged in the longitudinal extension direction of the corrugations, so that the effect of blocking gas convection in the corrugated plate can be effectively achieved, evaporation of LNG in the storage tank can be effectively reduced, and then damage to goods is reduced.

The utility model discloses an inerting and discharging combined safety protection device for a solid hydrogen storage tank, and belongs to the technical field of hydrogen storage and supply. The device comprises a solid hydrogen storage tank main body, a pressure and temperature sensing module, an inert gas injection system, a flameless relief device and a hydrogen treatment unit, the pressure and temperature sensing module monitors parameters in the tank in real time, when the parameters exceed a preset threshold value, the inert gas injection system injects inert gas from the lower portion of the tank body at constant pressure, the air pressure is stabilized through flow control, and meanwhile hydrogen is pumped out of an opening in the upper portion of the tank body to the processing unit; and a discharge port is formed in the side surface of the tank body and is linked with the flameless discharge device. According to the device, through the design of inerting inhibition and safe release, the potential safety hazard of overtemperature and overpressure in the solid hydrogen storage process is solved, the stability and safety of a hydrogen storage system are improved, and the device is convenient to operate and adapts to transformation of an existing solid hydrogen storage tank.

The invention relates to the technical field of low-temperature gasification and heat management, and discloses an ice layer monitoring prediction and self-adaptive control device for a liquid hydrogen air temperature type gasifier. A data acquisition unit of the device acquires the running state of the gasifier and multi-source sensor data of an external environment; the weather prediction unit obtains weather change information in a future period and calculates a comprehensive influence coefficient of weather on the operation state of the gasifier; the data fusion and processing unit calculates an ice layer thickness correction value of each monitoring node according to the data of the multi-source sensor; the threshold value judgment unit judges the icing state of the node, and after the node is judged to be in the icing state, a judgment index representing the icing risk and the ice layer development trend is calculated; and the control response unit switches a deicing mode and executes a corresponding deicing control strategy according to the change state of the judgment index, and switches a high-energy-consumption deicing mode, a low-energy-consumption deicing mode and an observation mode. The deicing energy consumption of the gasifier is reduced, and the operation stability and the heat efficiency are improved.

The invention relates to compressed carbon dioxide energy storage equipment, a carbon dioxide storage device and a control method, a plurality of independent carbon dioxide storage air bags are detachably installed on a supporting frame, and the carbon dioxide storage air bags can serve as floating assisting air bags of water equipment after storing air; each carbon dioxide storage air bag is independently monitored and controlled through an inflation and deflation control component, the pressure of air stored in each air bag can be monitored in real time, and the storage and release amount of carbon dioxide can be quickly and flexibly adjusted; the displacement sensor monitors the posture change of the supporting frame in real time, the controller adjusts the inflation and deflation strategy or the system operation state in time according to the current air pressure state of each carbon dioxide storage air bag and the posture change of the supporting frame, and air bag damage or system faults caused by structural instability are effectively prevented. A plurality of independent carbon dioxide storage air bags in the air bag type storage device can be flexibly arranged on a supporting frame to adapt to different terrains and space constraints.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

The invention discloses an in-tank convection prevention device and method. The in-tank convection prevention device comprises a storage tank body, a heat insulation module, a shielding corrugated plate, a bonding connecting strip and a convection blocking strip. According to the convection prevention method, the heat insulation module is firmly fixed by bonding the connecting strips, and a gas vertical flowing channel in a gap between the storage tank body and the heat insulation module is forcibly cut off by utilizing the transversely arranged convection blocking strips; according to the storage tank, a'thermosyphon 'closed circulation loop causing heat transfer is effectively damaged, continuous gas convection is avoided, and therefore structural damage or deformation of the storage tank body caused by local low-temperature impact is effectively prevented while the overall cold insulation performance is greatly improved and the cold loss is reduced.

A breakaway valve for a cryogenic fluid tank includes a tank-side valve and a nozzle-side valve. The tank-side valve is connected to and forms a first vacuum-insulation layer with a first jacketed hose. The first jacket support includes first bellows configured to reduce heat transfer with the first vacuum-insulation layer and one or more first bellow supports that include first teeth inserted between and engaging the first bellows to provide structural support to the first bellows. The nozzle-side valve is connected to and forms a second vacuum-insulation layer with a second jacketed hose. The second jacket support includes second bellows configured to reduce heat transfer with the second vacuum-insulation layer and one or more second bellow supports that include second teeth inserted between and engaging the second bellows to provide structural support to the second bellows.

The invention discloses a standby power supply system, and relates to the technical field of transformer substation power supply, a hydrogen production module is used for producing hydrogen by using commercial power or renewable power and then storing the hydrogen in a high-pressure gas storage tank of a hydrogen storage module, and the hydrogen storage module is provided with a one-way valve for the hydrogen to pass through in one way and a gas compressor for compressing the hydrogen to realize hydrogen conveying; after hydrogen stored in the hydrogen storage module is subjected to power generation through a fuel cell through the power generation module, the hydrogen is input into a storage battery pack of an uninterruptible power supply system of the transformer substation, and in the whole process, the control module detects the state of a main power supply and controls starting and stopping of the power generation module. The hydrogen production rate of the hydrogen production module and the hydrogen storage pressure of the hydrogen storage module are controlled, only water is generated in the power generation process, harmful emission is avoided, direct current generated by the fuel cell is directly matched with a UPS storage battery direct current bus, the response speed is high, conversion loss is reduced, the energy utilization efficiency is improved, the system automation degree is high, and the operation and maintenance cost is low.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

The invention discloses a film type liquid cargo containment system which comprises a plane insulation module, a corner insulation module and a nitrogen pipeline, the plane insulation module and the corner insulation module are fastened on the inner wall of a storage tank cabin, and each of the plane insulation module and the corner insulation module is composed of a main layer insulation module and a secondary layer insulation module. The main layer insulation module is fixed above the secondary layer insulation module to form step surfaces, a first bridging module, a second bridging module and a corner region bridging module are respectively mounted on the step surfaces at different positions, and nitrogen pipe mounting grooves are formed in the first bridging module, the second bridging module and the corner region bridging module through which a nitrogen pipeline passes; the arranged nitrogen pipe mounting grooves are connected to form a nitrogen arrangement pipeline; the invention further discloses a nitrogen pipeline mounting method. According to the thin film type liquid cargo containment system, the nitrogen pipelines are embedded in the bridging modules, so that the flatness of the upper surface of the main layer insulation structure of the containment system can be kept, and the thin film type liquid cargo containment system is adaptive to more types of corrugated plate structures.

The invention provides a motor control method, device and equipment, and is applied to the technical field of motors. The method comprises the following steps: before oxygen supply, controlling a motor to start running at a pre-configured minimum driving current, controlling the driving current of the motor to increase progressively before the motor has a rotating speed, determining a target driving current of the motor when the motor is changed from a non-rotating speed to a rotating speed, and storing the target driving current as a driving current required by the motor in an oxygen supply process, and in the oxygen supply process, the motor is controlled to operate at the target driving current to apply pressure to the oxygen bottle, so that the oxygen bottle releases oxygen. According to the method provided by the invention, the oxygen supply system can take the oxygen bottles of different specifications as the oxygen source, so that the oxygen supply system can be matched with the oxygen bottles of various specifications, and the compatibility of the oxygen supply system can be improved.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

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 the technical field of hydrogen energy storage, in particular to an underground hydrogen storage system, which is characterized in that a hydrogen storage sensing module and a processing module are integrated in the system, a multi-input multi-output monitoring channel is constructed by using array type electrode nodes, and the processing module constructs a dual-drive prediction model through superposition of a physical state space and a neural network to obtain reference hybrid prediction output; generating a virtual sample set by using random sampling to construct a dynamic random tolerance envelope band; and finally, leakage is judged according to the permeability of the envelope band according to the actually measured signal. According to the invention, the problem of high false alarm rate of the system due to the fact that in-pipe nonlinear background triboelectric charge noise covers tiny leakage characteristics under a fluctuating power supply charging working condition is effectively solved; millisecond-level self-adaptive accurate diagnosis of the air tightness of the pipeline in a complex dynamic environment is realized, and the detection capability of weak leakage signals is remarkably improved while electromagnetic interference is filtered out.

The utility model relates to a liquid hydrogen storage system which comprises an integrated hydrogen storage device and a hydrogen storage medium, the integrated hydrogen storage device comprises a liquid storage tank for storing a hydrogen storage medium, a gas storage tank for storing hydrogen, a reactor connected with the output ends of the liquid storage tank and the gas storage tank, a condenser connected with the reactor, a gas-liquid separator connected with the output end of the condenser, a gas compressor and a gas buffer tank, and one or more unsaturated aromatic hydrocarbons or heterocyclic unsaturated compounds with a saturated vapor pressure of more than 1 kPa and a temperature of 20 DEG C. The gas-phase storage medium of the liquid hydrogen storage system sequentially passes through the condenser, the gas-liquid separator, the gas compressor and the gas buffer tank, so that a hydrogen pressurizing, cooling and refluxing process is realized, a liquid hydrogen storage material can be effectively recycled, and the purity of hydrogen can be ensured.

The invention discloses a handheld oxygen generator in the field of oxygen generation equipment, which comprises an air pump assembly, an air inlet assembly, an air outlet assembly, molecular sieve tanks and an oxygen storage tank, a pressure preparation gas tank is arranged on a gas path structure between the two molecular sieve tanks and the oxygen storage tank, and oxygen-enriched gas adsorbed by the molecular sieve tanks firstly enters the pressure preparation gas tank to be stored and then enters the pressure preparation gas tank to be stored; and after the gas in the pressure preparation gas tank reaches the required pressure, the gas enters the oxygen storage tank. In the oxygen production process, gas can generate standby pressure in the standby pressure gas tank, so that the pressure of the molecular sieve tank is kept in a high-pressure range, the adsorption capacity of the molecular sieve on nitrogen in air is improved, the oxygen content of the oxygen production gas is improved, and the oxygen production amount can still be met under the condition that the filling amount of the molecular sieve is reduced; therefore, the sizes of the molecular sieve tank and the whole oxygen generator are reduced. In addition, oxygen is collected through the pressure preparation gas tank, oxygen is conveyed to the oxygen storage tank after certain pressure preparation is achieved, oxygen in the oxygen storage tank can be promoted to be collected, the pressure is increased, and the oxygen output requirement in the oxygen using state is met.

The invention discloses an energy storage power station phase change liquid cooling hydrogen storage multistage linkage safety control method and system, and relates to the technical field of liquid cooling data processing. The phase change liquid cooling hydrogen storage multistage linkage safety control method and system for the energy storage power station comprises the steps that S1, liquid cooling hydrogen storage data are periodically collected, and the liquid cooling hydrogen storage data are preprocessed; s2, the current operation state is evaluated and judged, and when abnormal operation occurs, the controller gives out a first-level alarm and executes risk level evaluation; s3, risk grades are divided, a cooling strategy is generated, an execution unit executes cooling instructions in a grading mode, the heat dissipation capacity of the cooling strategy is evaluated after the instructions are executed, and whether short-time hydrogen storage zone protection measures are triggered or not is judged; and S4, the cooling response residual evaluation value and the energy storage state evaluation value are rechecked, and when the two values both meet the safety threshold condition, the protection measures are removed and the alarm is given. The problem that in the prior art, phase change liquid cooling and hydrogen storage control lack cooperative control, and consequently cooling and hydrogen storage protection response in an energy storage power station is separated is solved.

Techniques and materials provide for thermal insulation for tanks, such as tanks for use in space flight missions. Microporous glass blocks may be used as an insulative bridge between spray-on foam insulation and a stainless steel wall of a tank, for example. Blocks of microporous glass may be mechanically attached to the interior of the tank, after which spray-on foam insulation is applied directly to the blocks. The bridging insulation provided by the microporous glass blocks allows the temperature of the stainless steel tank wall to exceed the usable temperature of the spray-on foam insulation by preventing a substantial portion of heat of the stainless steel wall from reaching the spray-on foam insulation. An insulated tank may instead comprise a tank wall that is a honeycomb-structured composite layer including an exterior skin, an interior skin, and a core that presents a relatively long thermal path, for improved thermal insulation.

The invention discloses a leakage monitoring method based on an LNG fuel gas system. The leakage monitoring method comprises the steps that a self-adaptive frequency modulation continuous wave active acoustic scanning network is established; blind source separation is carried out on mixed signals in acoustic scanning network abnormal events by adopting self-adaptive kernel independent component analysis; constructing a leakage feature mapping model of the physical information neural network; leakage source accurate positioning and quantification based on acoustic tomography and Bayesian reasoning are carried out; multi-modal decision fusion is carried out based on the multi-dimensional data sources received in parallel, a false alarm suppression mechanism is set, and time continuity verification and space consistency verification are carried out; establishing a reinforcement learning model for autonomously optimizing a monitoring strategy according to environment change and system state, and realizing adaptive optimization; the strategy network after self-adaptive optimization is deployed at the cloud, actions are generated regularly according to the current state, the actions are issued to the regional gateway and the edge node for execution, and iterative updating is carried out, so that the monitoring accuracy in a complex environment is improved, and the false alarm rate is reduced.

The utility model relates to the technical field of exhaust and ventilation equipment, and discloses exhaust and ventilation equipment which is of a double-channel structure, a first exhaust pipe and a second exhaust pipe are arranged on the rear portion of an air suction guide pipe, and the first exhaust pipe and the second exhaust pipe are selectively communicated through a communication mechanism. The communicating cylinder base is driven by the driving motor to be rotationally installed in the sealing cylinder base, the air suction guide pipe can be independently communicated with the first exhaust pipe and the second exhaust pipe through rotation for channel switching, the structure is simple, work is reliable, discharged chlorine can be classified through channel switching according to the chlorine concentration change, and the chlorine treatment efficiency is improved. Unnecessary resource consumption is avoided, the chlorine treatment cost can be reduced while the working flexibility of the device is improved, the electric butterfly valve is arranged in the middle of the air suction guide pipe, the electric butterfly valve and the communicating mechanism are synchronously in a closed state after chlorine is exhausted, and the sealing protection performance in the working chamber can be effectively improved through double sealing.

A hydrogen pressure reducer for a hydrogen supply system of a hydrogen fuel automobile relates to the technical field of hydrogen pressure reducers and comprises a valve body, a diaphragm type pressure reducing mechanism, a pilot-operated electromagnetic valve, a gas inlet and a gas outlet. The interior of the valve body is divided into a high-pressure cavity and a low-pressure cavity through the valve The diaphragm type pressure reducing mechanism is composed of a valve element assembly, a diaphragm assembly and a pressure adjusting assembly which cooperate to enable the output pressure of the air outlet to be kept stable, and assembly errors are eliminated. The valve element assembly is provided with a necking part to adjust the opening degree of a throttling hole, and accurate control is achieved. The base provides guiding constraint, and reliable sealing is ensured. The diaphragm assembly adopts a supporting disc, a diaphragm, a pressing disc and a locking nut fixing structure, so that the diaphragm is prevented from deforming, and the service life is prolonged. The pressure adjusting assembly comprises an upper cover, a pressure adjusting spring, a pressure adjusting spring seat and a pressure adjusting stud, and the pressure adjusting accuracy and stability are guaranteed. The overall reliability, sensitivity and safety of the hydrogen pressure reducer are improved.

A regulating valve device for a fluid cylinder includes a shut off valve having a ball tappet that actuates the shut off valve. A lever has a cam surface that interacts with the ball tappet as the lever is rotated to translate the ball tappet linearly and actuate the shut off valve. The lever is rotatable from a first valve closed position through a valve open position to a second valve closed position such that the valve open position is intermediate of the first and second valve closed positions. A pressure or flow regulating valve is downstream of the shut off valve. A handwheel is operatively connected to the pressure or flow regulating valve to adjust an outlet pressure of the pressure or flow regulating valve. The handwheel has an axis of operation that is offset from a longitudinal axis of the fluid cylinder by an acute angle.

The invention discloses a functional gradient type nano-composite glass fiber hydrogen storage bottle and a preparation and monitoring method thereof, and relates to the technical field of high-pressure gas storage equipment. The functional gradient type nano-composite glass fiber hydrogen storage cylinder comprises a modified polymer liner, a hydrogen storage functional layer, a gradient enhancement layer, a self-repairing protective layer and an embedded monitoring unit embedded in the structure which are sequentially arranged from inside to outside, so that the integration of structure enhancement, active hydrogen storage, damage self-repairing and intelligent monitoring is realized; the gradient enhancement layer optimizes material distribution according to stress distribution, and the overall mechanical efficiency and the lightweight level are improved; the hydrogen storage functional layer endows the bottle body structure with an auxiliary hydrogen storage capability; through cooperation of the self-repairing protective layer and the embedded monitoring unit, active repairing and real-time sensing of micro-damage are achieved, the reliability and safety of the hydrogen storage bottle are improved, and the service life of the hydrogen storage bottle is prolonged.

The invention relates to a gas leakage monitoring system and method, computer equipment and a computer program, and the system comprises a pressure sensor which is disposed on the inner wall of a gas storage shaft, is in communication connection with a controller, and is used for detecting the gas pressure in the gas storage shaft; the gas sensors are arranged on the inner wall and the outer wall of the gas storage shaft, are in communication connection with the controller and are used for detecting the gas concentration inside the gas storage shaft and the gas concentration outside the gas storage shaft; the ultrasonic sensor is arranged on the inner wall of the gas storage shaft, is in communication connection with the controller and is used for detecting a sound wave signal generated by gas leakage; and the controller is used for judging whether gas leakage occurs in the gas storage shaft or not through a preset risk grade judgment model according to the gas pressure, the gas concentration and the sound wave signal. According to the utility model, the monitoring accuracy and sensitivity are improved, real-time monitoring and early warning can be realized, the leakage position can be accurately positioned, and the safety and reliability of the monitoring system are improved.

The invention relates to a fuel gas tank (1) for a fuel gas tank system, said fuel gas tank comprising: a storage volume (3) which is enclosed by a wall (2) and can be filled with fuel gas via a tank line (4) having an integrated tank valve (5); and a temperature sensor (6) for sensing the temperature in the fuel gas tank (1), the temperature sensor (6) being located outside the storage volume (3) and being thermally connected to the storage volume (3) via a thermal conductor (7) projecting into the storage volume (3). The invention also relates to a fuel gas tank system comprising at least one fuel gas tank (1) according to the invention.

A protection device for a container for pressurized gas comprises a main body which is configured so as to at least partially close a valve body of the container and a coupling element being rotatably connected to the main body. The main body comprises an abutment element which extends in the direction away from the main body, the abutment element being configured in such a manner that, when the coupling element is in an open configuration, a receiving cavity is defined between the abutment element and the arms and is configured to receive a bar-shaped element.