2859results about "Fluid handling accessories" patented technology

The invention discloses a liquid cargo containment system and a maintenance method, and belongs to the technical field of natural gas storage, the liquid cargo containment system comprises a main shielding layer, a secondary shielding layer, an insulating layer and a detection pipeline, one end of the detection pipeline is connected with a gas input pipeline, the other end of the detection pipeline is provided with a first branch pipe and a second branch pipe, and the first branch pipe extends between the main shielding layer and the secondary shielding layer; the first branch pipe extends into the insulating layer, the second branch pipe extends into the insulating layer, a first temperature monitoring unit is arranged in the first branch pipe, a second temperature monitoring unit is arranged in the second branch pipe, and a first pressure difference detection unit is further arranged between the first branch pipe and the second branch pipe. Through dual monitoring of the peripheral temperature and pressure of the thin film tank, accurate monitoring of the liquid cargo leakage condition is ensured, and the problem that the liquid cargo leakage condition is misreported due to pressure fluctuation caused by other factors in a conventional monitoring mode is solved.

The invention relates to a mobile hydrogen refueling station comprising at least a first, second and third hydrogen gas source configured for storing gas at different pressures. Said mobile hydrogen refueling station further comprises at least two filling hoses, connectable to said first, second and third hydrogen source a via conduit system and to a receiving vessel. Said mobile hydrogen refueling station further comprises a controller configured for simultaneously controlling refueling of at least a first and a second receiving vessel by: controlling flow of hydrogen gas from said first, second or third hydrogen gas source via a first of said at least two filling hoses to said first receiving vessel, and controlling flow of hydrogen gas from said first, second or third hydrogen gas source via a second of said at least two filling hoses to said second receiving vessel.

The embodiment of the invention discloses a hydrogen refueling station hydrogen leakage detection method and device and electronic equipment. The method comprises the steps that in response to the fact that the actual flow difference value between upstream and downstream pipelines in the hydrogen refueling station is larger than a flow difference threshold value, flow data of all the pipelines in the hydrogen refueling station after the pipelines are connected into leakage detection branches are detected; and in response to the fact that the flow data corresponding to the first pipeline meets the hydrogen leakage condition, determining a target area, in which the local amplification image corresponding to the first pipeline changes to a target color within a first preset duration, as a hydrogen leakage position. In addition, the method further comprises the step of determining the minimum pipeline path so as to isolate the pipeline section corresponding to the minimum pipeline path. According to the embodiment of the invention, even if the hydrogen leakage amount is small at the initial stage of hydrogen leakage, and no matter where the leakage position is, the leakage pipeline and the specific leakage position can be determined in time, so that the leakage pipeline can be isolated in time at the initial stage of leakage, and potential safety hazards are reduced.

The invention discloses a multi-hydrogen-storage-tank solid hydrogen storage system based on temperature control, and relates to the technical field of hydrogen energy storage, and the key points of the technical scheme are that the system comprises a plurality of hydrogen storage tanks, each hydrogen storage tank adopts different types of alloy hydrogen storage materials, each hydrogen storage tank is provided with an independent temperature control system, and the temperature is adjusted according to the types of the hydrogen storage materials; therefore, the hydrogen storage efficiency is optimized. The system can accelerate the hydrogen storage rate and improve the storage density through temperature control, the heat exchange device is arranged to improve the heat energy management efficiency, and accurate temperature control and cycle counting functions are achieved. The service life of the hydrogen storage material can be effectively prolonged, performance degradation is reduced, and the long-term stability of a hydrogen storage system is improved.

A compressed gas supply system comprises at least one tank (2) for highly compressed gas, a tank-side shut-off device (4), and a first sensor group comprising a first pressure sensor (10) and a first temperature sensor (11). The pressure sensor (10) and the temperature sensor (11) are arranged on a line (3, 8) extending from a side of the tank-side shut-off device (4) facing away from the tank (2) to a consumer-side shut-off device (7, 16).

The invention discloses a marine low-pressure carbon dioxide tank pressure control method and system, and relates to the technical field of storage tank pressure control, and the method comprises the steps: obtaining real-time pressure data in a low-pressure carbon dioxide tank, and extracting pressure feature data; analyzing the pressure characteristic data by using a pressure diagnosis algorithm, and identifying key factors influencing the pressure stability in the low-pressure carbon dioxide tank; based on the key factors, a pressure regulation and control model is established, pressure parameters of the low-pressure carbon dioxide tank are adjusted in real time, and a control strategy is optimized. According to the method, key factors are analyzed by using a pressure diagnosis algorithm, so that accurate pressure regulation is realized, the stability of the internal pressure of the storage tank is improved by establishing an optimization model and adjusting pressure parameters in real time, the risk of carbon dioxide state change caused by pressure fluctuation is reduced, and the operation safety of a ship is ensured.

The invention discloses a hydrogen supply and energy storage device which comprises a hydrogen storage tank body, a gaseous hydrogen storage tank is installed in the hydrogen storage tank body, a liquid hydrogen storage tank is installed on the hydrogen storage tank body, a supporting plate is fixedly connected to the hydrogen storage tank body, and a cooling liquid storage box is installed at the top end of the supporting plate. A transverse plate is fixedly connected to the side wall of the cooling liquid storage box, metal cooling fins are arranged on the side wall of the transverse plate, and the cooling device further comprises a cooling circulation assembly and an air blowing cleaning assembly. A motor drives a first sector gear to rotate, the first sector gear is alternately engaged with a transmission gear and a driven gear, so that a rotating shaft drives metal heat dissipation fins to rotate for heat dissipation, and meanwhile, the driven gear drives cooling liquid to circularly flow in a sealing pipe, a cooling pipe and a liquid inlet pipe through a connecting rod and a piston rod; and cold airflow generated by the fan is used for dissipating heat of the hydrogen conveying pipe, so that the heat dissipation effect is improved.

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.

The invention belongs to the technical field of solid hydrogen storage, and provides a solid alloy hydrogen storage device with high heat transfer performance and application thereof, and is characterized in that the device comprises a hydrogen storage container, a hydrogen storage alloy and a heat exchange structure assembly; a fin structure and a layering partition plate are arranged in the hydrogen storage container, by optimizing the layering partition plate and the fin structure, displacement and agglomeration of hydrogen storage alloy in a moving or vibrating environment are effectively prevented, the mass transfer and heat transfer performance in the hydrogen storage tank is remarkably improved, hydrogen and heat can be rapidly transferred to the hydrogen storage alloy, and the hydrogen storage effect is improved. Therefore, the hydrogen absorption and desorption efficiency is improved. The method is suitable for AB2 type alloys, AB5 type alloys, BCC type alloys, superlattice hydrogen storage alloys and the like, the hydrogen absorption and desorption process can be efficiently completed at a certain temperature and pressure, and the high efficiency and stability of the hydrogen absorption and desorption process are ensured. And the catalyst can be widely applied to various scenes such as traffic, hydrogen refueling stations, industrial processes and hydrogen energy storage.

The present invention relates to a rebound composite electromagnetic energy dissipation device for reducing sloshing with a liquid-filled ball for a large liquefied natural gas (LNG) storage tank. When the liquid surface sloshes around, the gas spring is pulled by the steel strand to produce vertical displacement and provide a restoring force, and the vertical displacement of the gas spring drives the fan blades on the sleeves of the ball screws at the bottom to rotate in the damping fluid, consuming energy. The present invention uses hydraulic transmission instead of mechanical transmission of traditional piston motion, and the horizontal pistons produce horizontal displacement in the case of pressure unbalance, thus increasing the flexibility of horizontal piston motion; magnets are arranged in the horizontal slideways and the horizontal pistons to intensify the motion of the horizontal pistons and the relative motion between the horizontal pistons and the interior.

The present disclosure discloses a method for simulating performance of an LNG ambient air vaporizer under a frosting condition, performing site operation test on the LNG ambient air vaporizer to obtain fitting relationship between the outer wall temperature of frosted finned tube and frost layer; transforming a sum of increased frost layer thermal resistance and thermal resistance into equivalent thermal contact resistance, and representing the equivalent thermal contact resistance as a function of the outer wall temperature; establishing a calculation model of the LNG ambient air vaporizer, performing simulation calculation by equivalent heat conduction coefficient, so as to obtain fluid-solid conjugate heat transfer characteristics and vaporization performance of the LNG ambient air vaporizer under the frosting condition. The influences of heat transfer in gas-liquid phase change flow and fluid-solid conjugate heat transfer in the tubes of the vaporizer under the frosting condition are considered in the present disclosure.

A fluid storage and supply device comprising a cryogenic reservoir for storing liquefied fluid, a withdrawing circuit comprising a first withdrawing pipe having a first upstream end connected to the upper part of the reservoir and a second downstream end intended to be connected to a user member, the first withdrawing pipe comprising a first heating heat exchanger situated outside the reservoir and a second heating heat exchanger situated inside the reservoir, the withdrawing circuit comprising a set of valve(s) configured to ensure the passage of a flow of fluid circulating from the first end towards the second end by passing through the first heat exchanger and then through the second heat exchanger or by passing solely through the first heat exchanger without passing through the second heat exchanger, characterized in that the device further comprises a system for pressurizing the reservoir comprising a pressurizing pipe separate from the withdrawing circuit and comprising two ends respectively connected to the upper and lower parts of the reservoir, a vaporizing heat exchanger and a set of valve(s) configured to allow the withdrawal of liquid from the reservoir, the heating thereof in the vaporizing heat exchanger and the reintroduction thereof into the reservoir.

The liquefied gas bottle intelligent management terminal comprises an intelligent hand wheel assembly and an angle valve, a shell of the intelligent hand wheel assembly is made of high-temperature-resistant fireproof plastic, a bottom groove of the intelligent hand wheel assembly is matched with a valve element screw of the angle valve and locked through a fixing nut, and a positioning module and a rotation direction sensor are embedded in an upper cover. A battery compartment, a circuit board and an information storage chip are arranged in the shell, and a touch switch is arranged on the outer wall of the shell; the positioning module adopts a multi-band base station positioning chip, and the rotation direction sensor is an integrated sensor of a three-axis gyroscope and an accelerometer; the terminal can collect information such as the position of a gas cylinder and the opening and closing state of an angle valve, and the information is encrypted and uploaded to the cloud server through the wireless communication module. According to the system, the position and the opening and closing state of the gas cylinder can be monitored in real time by integrating the positioning module, the sensing module and the like, the safety of filling information is guaranteed by utilizing a block chain, intelligent early warning of abnormity and cloud analysis of data can be realized, a report can be generated to assist management, and the safety and efficiency of liquefied gas cylinder management are improved.

An underground storage system for storing fluid includes a hole having a bottom, a support element including at least one opening able to receive a joining element, at least one reservoir having a longitudinal axis, a bottom end and a top end, a first closure able to close the reservoir at its bottom end, and a second closure able to close the reservoir at its top end. The top end is able to be joined to the support element via the joining element such that the reservoir is hung inside the hole and such that an axial clearance able to absorb axial thermal expansion of the reservoir remains between the first closure and the bottom.

The invention discloses a hydrogen desorption control method for solid-state hydrogen storage and supply. The method comprises the steps that the current pressure and the current temperature of a solid-state hydrogen storage and supply system are obtained; determining a hydrogen desorption temperature corresponding to the current hydrogen content value and the hydrogen desorption balance pressure, and calculating to obtain an adjusting temperature according to the hydrogen desorption temperature and the current temperature; and adjusting the temperature of the solid hydrogen storage and supply system to the adjusting temperature. The invention further discloses a solid-state hydrogen storage and supply system using the method, the system comprises at least one hydrogen storage bottle, a temperature adjusting device, a temperature detection device, a pipeline, a pressure detection device, a switch component and a control device, and the control device is configured to receive the current temperature and the current pressure, determine the hydrogen desorption temperature, calculate the adjusting temperature and control the hydrogen desorption temperature according to the adjusting temperature. The switch is used for controlling the temperature adjusting device to adjust the temperature and controlling the switch component.

The present disclosure provides systems and methods for monitoring for a stuck valve. Various temperature and pressure sensors are used to monitor for a stuck valve in one or more tanks of hydrogen gas.

The invention relates to a pressurised fluid container (30), in particular a gas cylinder, having a container body (31) fitted with a fluid dispensing valve (10) and also an electronic device (20) having a casing (21) having an end fitting (25) configured to be housed in an end fitting housing (15) of the valve body (10). A protective cover (40) is arranged around the valve body (11). The peripheral wall (21.1) of the casing (21) is shaped for the peripheral edge (43) of the opening (42) of the cover (40) in order to keep the electronic device (20) secured to the cover (40) when its end fitting (25) is housed in the end fitting housing (15) of the valve body (11).

The invention discloses a hydrogen energy endurance supply regulation and control management system and method suitable for a hydrogen energy unmanned aerial vehicle, and belongs to the technical field of energy supply regulation and control. The method comprises the following steps: constructing a theoretical endurance mileage model, and calculating the theoretical endurance mileage which can be reached by the unmanned aerial vehicle in an ideal state after one hydrogen storage bottle is used up; collecting flight data of the unmanned aerial vehicle, inputting the flight data into a pre-trained artificial intelligence algorithm model, obtaining the endurance loss amount of the unmanned aerial vehicle in the current flight state, and further obtaining a first endurance mileage; a flight attitude combination used by the unmanned aerial vehicle in the flight process is obtained, and the predicted endurance mileage is calculated; based on the predicted endurance mileage of the unmanned aerial vehicle needing hydrogenation and the hydrogen capacity and the hydrogen concentration of the current remaining hydrogen storage cylinders, the unmanned aerial vehicle matched with the hydrogen concentration of the remaining hydrogen storage cylinders is screened out, and the hydrogen concentration of the hydrogen storage cylinders is preferentially distributed to the matched unmanned aerial vehicle; in the hydrogenation process, the required hydrogen energy capacity and the corresponding hydrogen concentration are calculated.

A liquid cryogen stored in a liquid cryogen space of a closed insulated cryogenic storage vessel is subcooled by allowing it to enter into a conduit disposed in the liquid cryogen space where it is expanded by a pressure reducer in the conduit, thereby producing a cooled biphasic mixture of the cryogen in liquid and vaporized forms. The cooled biphasic mixture has a temperature lower than that of the liquid cryogen in the liquid cryogen space. Heat is transferred across the conduit from the liquid cryogen in the liquid cryogen space to the cooled biphasic mixture.

The invention discloses a storage tank pressurization control method and system based on LNG gas station fuzzy self-adaptive PID control, and aims to solve the technical problems that a traditional pressurization control method of an LNG storage tank is low in control precision, poor in stability and rapid in equipment abrasion. According to the control method, dynamic compensation for the target pressure is introduced, so that the system can aim at a more accurate control target in the initial stage, the steady-state control deviation is reduced, and the control precision is improved. And static pressure head change disturbance caused by liquid level change is overcome through dynamic compensation, the adjusting burden of the controller is reduced, the controller can focus on processing other dynamic disturbance, and therefore the control process is more stable, and overshoot is smaller. Through the design of a dynamic compensation mechanism and a special fuzzy rule base, the system can automatically adapt to various complex working conditions, and fast, stable and overshoot-free pressure control is always kept. Therefore, frequent and large-amplitude action and surge phenomena of the valve are avoided, and the energy consumption of an executing mechanism is reduced.

An outlet assembly for hybrid pressure and flow regulation includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position, a second position, and a third position. When the first orifice is in the first position, the flow of gas passes through the first orifice, which regulates a flow rate of the flow of gas through the second orifice. When the first orifice is in the second position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a first specific flow rate. When the first orifice is in the third position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a second specific flow rate.

The present invention relates to a system for the thermal compression of a gas, characterized in that it comprises a source (1), a target (2) and at least one group of reservoirs (3) each one comprising at least two reservoirs (3), the system comprising a heating means (4) and a cooling means (5) for heating and cooling the contents of each reservoir, each group further comprising: —transfer means (6a, 6b) allowing gas to be transferred directly from the source to each reservoir and directly from each reservoir to the target, and—for each reservoir (3) of the group, two-way transfer means (7) allowing gas to be transferred directly between this reservoir (3) and at least one other reservoir (3) of the group. The present invention also relates to a cyclic method for the thermal compression of a gas in a plurality of reservoirs (3) of at least one group of a system according to the invention.

The invention relates to the technical field of data processing, and discloses an intelligent arrangement, storage, tracking, management and control method and system for sulfur hexafluoride gas cylinders. The method comprises the following steps: performing leakage risk assessment through a sulfur hexafluoride concentration sensor and a gas cylinder pressure monitoring device to obtain an environmental risk data set; performing multi-dimensional state sensing on the gas cylinder according to the intelligent label and the inclination angle sensor to obtain a dynamic state information set of the gas cylinder; performing path optimization through a multi-target search algorithm to obtain a multi-target path cost matrix; performing Pareto optimal solution screening through a leading edge set maintenance mechanism to obtain an optimal scheduling path set; and tracking the life cycle of the gas cylinder based on the state machine model to obtain full life cycle tracking data. The problems of intelligent scheduling optimization and full-life-cycle tracking management and control under the multi-target constraint condition in sulfur hexafluoride gas cylinder storage management are solved.

The embodiment of the invention provides a hydrogenation gun, a hydrogenation system and a hydrogenation station, the hydrogenation gun comprises a hydrogenation pipe, a first cylinder, a first proximity switch and a first torque sensor; the hydrogenation pipe is divided into a hydrogenation front pipe and a hydrogenation rear pipe through a valve; the first torque sensor is used for detecting whether the hydrogenation front pipe is butted with a hydrogenation port of a vehicle to be hydrogenated or not after receiving a hydrogenation starting signal; the first cylinder is used for controlling the valve to be opened after the hydrogenation front pipe is butted with the hydrogenation port; and the first proximity switch is used for sending in-place information to the hydrogenation system after detecting that the valve is in an open state. The butt joint state between the hydrogenation gun and the hydrogenation port of the vehicle to be subjected to hydrogenation is detected through the first torque sensor, after butt joint is completed, the valve is controlled to be opened, when the first proximity switch detects that the valve is opened, the hydrogenation system is controlled to convey liquid hydrogen to the hydrogenation gun, and therefore automatic filling when the hydrogenation gun is inserted into the hydrogenation port is achieved.

The invention relates to a system for storing liquid hydrogen and for distributing gaseous hydrogen, comprising a source of liquid hydrogen (20), at least two gaseous hydrogen tanks (31-35) to be filled and a transfer device comprising: a transfer unit (25) configured to transfer liquid hydrogen from the hydrogen source (20) to any of the tanks, a vapour compressor (10) having a first upstream end and a second downstream end fluidly connected to each of the tanks, a set of valves (51-55), a control device configured to issue a command to transfer the liquid hydrogen and to open and / or close one or more valves (51-55), the compressor (10) being arranged so as to transfer vapours created during filling from any tank to each of the other tanks in succession, by compressing the vapors to a pressure greater than the pressure in the tank during filling.

The present disclosure provides systems and methods for storing, transporting, and using hydrogen. In some embodiments, the method may comprise (a) storing hydrogen fuel in one or more fuel storage modules; (b) transporting the one or more fuel storage modules to a vehicle fueling site, wherein one or more hydrogen fuel compatible vehicles are located at or near the vehicle fueling site; (c) loading the one or more fuel storage modules into the one or more hydrogen fuel compatible vehicles, wherein the one or more fuel storage modules are configured to be releasably coupled to the one or more hydrogen fuel compatible vehicles; and (d) decoupling the one or more fuel storage modules from the one or more hydrogen fuel compatible vehicles after the one or more fuel storage modules are depleted or partially depleted.

Disclosed is a sensor for monitoring a composite structure. The sensor includes multiple sensing elements of different sizes, each configured for different respective monitoring tasks. Also disclosed are methods of fabricating the sensor, designing and manufacturing the sensor, and attaching the sensor to the composite structure.

A gas supply system includes a loading / unloading stage including a cradle loader where a cradle loaded with a gas container is loaded, a test buffer chamber is configured to test the gas container, and a loading / unloading robot configured to transfer the gas container between the cradle and the test buffer chamber. A gas supply stage includes a storage queue configured to temporarily store the gas container, a gas supply cabinet where the gas container is mounted, and a transfer robot configured to transfer the gas container between the test buffer chamber and the storage queue and between the storage queue and the gas supply cabinet.

The invention discloses a solid-gas coupling hydrogen storage system and a flow and pressure coordinated regulation and control method thereof. The system comprises a gaseous hydrogen storage tank, a solid hydrogen storage tank, a hydrogen coupling regulation and control device, a hydrogen buffer tank, a solid hydrogen storage thermal management system, a high-pressure proportional valve, a low-pressure proportional valve, a three-way valve and a hydrogen storage valve. The gaseous hydrogen storage tank is connected with the hydrogen coupling regulation and control device through a pipeline, and high-pressure hydrogen is conveyed to the high-pressure inlet end of the hydrogen coupling regulation and control device. The low-pressure inlet end of the hydrogen coupling regulation and control device is connected with the solid hydrogen storage tank through a pipeline, and the outlet end of the hydrogen coupling regulation and control device is connected with the hydrogen buffer tank through a pipeline; and the pipelines of the gaseous hydrogen storage tank and the solid hydrogen storage tank are simultaneously connected with the three-way valve. According to the system, efficient and safe hydrogen storage and supply are achieved through the synergistic effect of all the components, and reliable technical innovation and support are provided for hydrogen energy application.

A hydrogen gas supply apparatus according to one aspect of the present invention includes a compressor configured to compress hydrogen gas and supply the hydrogen gas compressed to a pressure accumulator which accumulates the hydrogen gas, an adsorption column disposed between the discharge port of the compressor and the pressure accumulator, and configured to include an adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, and a plurality of valves disposed at the gas inlet / outlet port side of the adsorption column, being at a discharge port side of the compressor, and configured to be able to seal the adsorption column, wherein the space in the adsorption column is sealed using the plurality of valves such that the inside of the adsorption column is maintained to have a high pressure by the hydrogen gas compressed in the case where the compressor is stopped.