33 results about "Helium cylinder" patented technology

A water hydraulic cylinder impact leakage detection test bench based on helium detection, the test bench comprising a test bench body, a water hydraulic cylinder (12), a helium cylinder (14), a sealed container (16) and an impact device, wherein the water hydraulic cylinder (12) is detachably mounted on the test bench body; an outlet end of the helium cylinder (14) is in communication with a rodless cavity of the water hydraulic cylinder (12), and a pressure-reducing valve (13) is mounted between the helium cylinder (14) and the water hydraulic cylinder (12); the sealed container (16) is detachably mounted in a rod cavity of the water hydraulic cylinder (12), and a helium mass spectrometer leak detector (15) is mounted on the sealed container (16); and the impact device is fixedly mounted on the test bench body, is connected to a piston rod of the water hydraulic cylinder (12), and is configured to provide impact power for the water hydraulic cylinder (12). The test bench uses an accumulator (6) as a pressure power source, which can provide rapid, stable and high-flow oil, thereby solving the problem of the pressure and flow of ordinary hydraulic pumps failing to meet test requirements; and compared with traditional impact generation by using hammer dropping, the test bench can precisely control the magnitude of the generated impact by means of the pressure of the accumulator (6), and is safe and reliable.

The utility model discloses a helium injection device for a magnetofluid ATM (automatic teller machine), which relates to the technical field of vacuum leak detection and comprises a high-pressure helium bottle, the top of the high-pressure helium bottle is sequentially connected with a constant-pressure valve body and a quick exhaust valve from bottom to top, and one end of the quick exhaust valve is connected with a second spray pipe. The second spray pipe can be wound and collected into the storage box, the second spray pipe can be pulled according to needs to change the use length of the second spray pipe, the application range of the second spray pipe is wider, meanwhile, when the second spray pipe is not used, the winding disc can be driven under the torsion of the clockwork spring to conduct winding treatment on the second spray pipe, the second spray pipe can be automatically wound, the second spray pipe is prevented from being scattered outside, and the second spray pipe is convenient to store; in cooperation with a cleaning assembly, dust attached to the surface of the second spraying pipe can be cleaned, use is convenient, and practicability is higher; through the fixing assembly, the pipe clamps can be disassembled and assembled conveniently and rapidly, and the nuts can be twisted according to needs so that the connecting and fixing effect of the two pipe clamps can be adjusted conveniently.

The invention discloses a motorized saturated diving system which comprises a residence cabin module, a diving bell module, a lifting module, a life support equipment module, a centralized operation control module and an air source module, the residence cabin module comprises a first saturated residence cabin, a second saturated residence cabin and a transition cabin, and the diving bell module comprises a diving bell body, an emergency air cylinder and an annular air bag. The lifting module comprises a bell winch, a fairlead winch, an umbilical cord winch, a fairlead ballast, a door-shaped lifting frame and a hydraulic device, the life support equipment module comprises a seawater heating device, an environmental control system outboard machine, a living water supply device and a power distribution cabinet, and the centralized operation control module comprises a living cabin console, a diving bell console and an electric control cabinet. The gas source module comprises a helium cylinder, an oxygen cylinder, a mixed gas cylinder, a compressed air cylinder, a liquid nitrogen Dewar and a liquid oxygen Dewar. By performing standardized configuration and organic linkage on each functional module, the adaptability and safety of the system under different operation depths are improved.

This invention provides a CO2 dynamic dissolution testing device. The device includes: a core holder, a vacuum system, a confining pressure system, a back pressure system, a fluid supply system, a nuclear magnetic resonance (NMR) testing system, a sensor system, and a temperature control system. The fluid supply system includes a CO2 gas supply component, a formation water supply component, a saturated carbon dioxide formation water supply component, and a helium supply component. The helium supply component includes a helium cylinder and a standard gas chamber, with the gas outlet of the helium cylinder connected to the inlet of the standard gas chamber. The CO2 gas supply component, formation water supply component, saturated carbon dioxide formation water supply component, and standard gas chamber are each connected to the fluid inlet of the core holder. The sensor system includes a pressure sensor group, comprising a pressure sensor for acquiring the pressure at the fluid inlet of the core holder, a pressure sensor for acquiring the pressure at the fluid outlet of the core holder, and a pressure sensor for acquiring the pressure of the standard gas chamber.

The invention provides a connector flange leak rate rapid detection device and method. The connector flange leak rate rapid detection device comprises a helium tank, a pressure reducing valve, a spray gun, a passive standard leak hole, a stop valve, a connector, a connector flange, a flange overall leak detection tool, a vacuum corrugated pipe and a helium mass spectrometer leak detector. A cavity is formed in the flange integral leakage detection tool, and a flange interface is formed on the edge of the top of the upward opening; a connector flange to be detected is placed above a flange interface of the flange integral leak detection tool and is in sealed connection with the flange interface, and a connector is inserted into the connector flange to be detected. The helium mass spectrometer leak detector is connected to the interior of the flange integral leak detection tool through a vacuum corrugated pipe; the passive standard leak hole is connected to the interior of the flange integral leak detection tool through a stop valve. The spray gun is connected to the helium tank through the pressure reducing valve, and a nozzle of the spray gun faces the connector. According to the invention, the overall leakage rate of the connector flange can be rapidly detected, the leakage point of the connector flange can be rapidly positioned, and the workload of the leakage rate detection of the connector flange can be reduced.

The present invention discloses an integrated plasma ion source for synchronous desorption and ionization, and relates to the field of ion sources. The integrated plasma ion source for synchronous desorption and ionization comprises a hollow ceramic tube, a cathode and an anode, wherein the anode is fixedly mounted on the inner bottom wall of the hollow ceramic tube, and a ceramic main body outlet is provided at the bottom end of the hollow ceramic tube, a sealing assembly is assembled between the top of the hollow ceramic tube and the cathode, and the cathode and the anode are assembled with circuit assemblies; a gas opening is provided on the outer surface of the hollow ceramic tube, and the gas opening is connected to a helium cylinder through an air pipe; a sample stage is provided below the hollow ceramic tube. The integrated plasma ion source for synchronous desorption and ionization does not require sample pretreatment for mass spectrometry detection, can simultaneously ionize non-polar to highly polar compounds, has a very small matrix effect, and is suitable for rapid broad-spectrum screening and high-throughput detection of small molecules in samples.

This invention relates to the technical field of uranium-containing fluids, and more particularly to a device and method for simulating the transport of uranium-containing fluids under oxygen-deficient conditions. The reaction mechanism includes a U-shaped glass tube placed vertically, with an outlet on the top right and an inlet on the bottom left of the tube, and a rubber stopper at the top opening. A supply mechanism includes a helium cylinder located on the left side of the U-shaped glass tube, with a pressure-reducing valve installed at its outlet. The outlet of the pressure-reducing valve is connected to a filling gun, the other end of which can be quickly connected to the inlet. By laying sandstone strata inside the U-shaped glass tube and using a helium oxygen-removal method to create an oxygen-deficient atmosphere, the transport scenario of uranium-containing fluids under real geological conditions can be highly replicated. Combined with a thermal insulation jacket and temperature controller for precise temperature control, the experimental results are closer to natural geological processes, providing reliable data support for the study of uranium transport mechanisms.

This invention discloses a rapid precooling system and method for a liquid hydrogen refueling station, belonging to the field of liquid hydrogen technology. The precooling system includes a liquid hydrogen refueling pipeline, a liquid hydrogen supply tank, a valve subsystem, a liquid hydrogen refueling tank, a circulation pipeline, a condenser, a gas-liquid separator, a liquid carbon dioxide tank, a storage cylinder, a helium pipeline, a high-pressure helium cylinder, a fuel cell, a cryogenic hydrogen pipeline, and a liquid hydrogen storage tank group. This system utilizes liquid carbon dioxide and cryogenic helium to achieve deep coupling between system displacement and precooling operations. After displacement, the system temperature has dropped below the temperature of liquid carbon dioxide, significantly reducing precooling time. It also utilizes cryogenic hydrogen stored in the liquid hydrogen storage tank group to liquefy carbon dioxide, achieving carbon dioxide medium circulation. Simultaneously, the hydrogen released after cooling and the hydrogen generated during precooling are transported to the fuel cell for power generation, improving hydrogen utilization efficiency.

The present invention provides a vacuum helium mass spectrometer leak detection method and device for bellows products, comprising the following steps: step S1, fixing the bellows with a support ring; step S2, assembling the support ring with a support plate; step S3, placing a first O-ring seal between the bellows and the upper cover, and fixing the upper cover, the bellows, and the support plate with studs; step S4, placing the fixed bellows on a base, placing a second O-ring seal between the base and the upper cover, and fixing them with bolts; step S5, placing the assembled bellows vertically, connecting a helium mass spectrometer leak detector to the bottom sampling port, and evacuating the outside of the bellows; step S6, connecting a helium cylinder connected to a pressure reducing valve to the top helium filling port, and filling the bellows with helium for leak rate testing. The present invention ensures that the bellows will not be stretched or distorted under stamping conditions; ensures the effectiveness of the seal between the bellows and the upper cover; and provides accurate and reliable test results.

The invention provides a fault diagnosis and fault processing method for a pressurization system of a carrier rocket, and belongs to the technical field of rocket fault analysis. The system comprises a temperature control autonomous supercharger, a first / second cold helium tank, an inlet valve, a first / second / third supercharging electromagnetic valve, a temperature sensor, a plurality of groups of pressure sensors, a liquid oxygen tank, a liquid oxygen tank safety valve, a liquid oxygen tank exhaust valve and a supercharging diagnosis controller. Wherein the temperature control autonomous supercharger is connected with the liquid oxygen tank through an inlet valve and a first supercharging electromagnetic valve, and the two cold helium gas cylinders are connected with the liquid oxygen tank through a pipeline with a throttling ring and a corresponding electromagnetic valve; the multiple sets of sensors monitor the states of all the branches, and the pressurization diagnosis controller is electrically connected with all the components to control the branches to work. According to the system, the size is reduced through a simplified redundant framework of temperature control self-generation pressurization and double cold helium cylinders, the reliability is improved through multi-branch backup, full-dimension monitoring and a safety device, meanwhile, helium consumption is reduced, and the system is suitable for a carrier rocket liquid oxygen tank pressurization scene.

The utility model discloses a trace methane and nitrous oxide isotope component separation, conversion and enrichment device, and belongs to the technical field of isotope analysis and test. Comprising a methane sample tube, a nitrous oxide sample tube, a helium bottle, a first Nafion trap, a VOC adsorption trap, a combustion tube, a four-way valve, an eight-way valve, a carbon dioxide removal assembly, a first enrichment cold trap, a second enrichment cold trap and a chromatographic column, the helium tank is communicated with the gas inlet ends of the methane sample tube and the nitrous oxide sample tube, the gas outlet end of the methane sample tube is communicated with the first Nafion trap and the VOC adsorption trap, the VOC adsorption trap is communicated with the carbon dioxide removal assembly through a four-way valve, the carbon dioxide removal assembly is communicated with a combustion tube, the combustion tube is communicated with the first enrichment cold trap through an eight-way valve, and the combustion tube is communicated with the second enrichment cold trap through an eight-way valve. The first enrichment cold trap is communicated with a second enrichment cold trap through an eight-way valve, and the second enrichment cold trap is communicated with the chromatographic column. According to the utility model, methane or nitrous oxide gas in the air can be separated, converted and enriched, so that methane or nitrous oxide in the air can be measured by instruments such as a mass spectrometer and the like.

The utility model relates to the field of high-purity gas recycling, in particular to a reusable high-purity helium recovery device. Comprising a pneumatic diaphragm valve, a filter, a recovery tank, a one-way reciprocating pump and a helium tank which are arranged along the flow direction of high-purity helium, the pneumatic diaphragm valve is used for controlling the pressure of the recovery tank; the filter is used for filtering solid particles in high-purity helium; the recovery tank is used for recovering high-purity helium, and the one-way reciprocating pump is used for compressing and pressurizing the high-purity helium in the recovery tank and filling the high-purity helium into a helium bottle. According to the nitrogen trifluoride production pipeline recycling device, the recycling device capable of recycling the high-purity helium is connected in the nitrogen trifluoride production pipeline, waste of the high-purity helium is reduced through repeated use, the production cost requirement can be lowered, the cleanliness of the production pipeline can be guaranteed through the recycled high-purity helium, and the production quality is improved.

1. The name of the design product: nozzle. 2. The use of the design product: nozzle for helium cylinder. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

A test bench for impact leakage detection of a water hydraulic cylinder based on helium gas detection includes a test bench body, a water hydraulic cylinder, a helium bottle, a sealed container, and an impact device. The water hydraulic cylinder is detachably installed on the test bench body; an outlet end of the helium bottle is in communication with a rodless cavity of the water hydraulic cylinder, and a pressure reducing valve is installed between the helium bottle and the water hydraulic cylinder; the sealed container is detachably installed at a rod cavity of the water hydraulic cylinder, and a helium mass spectrometer leak detector is installed on the sealed container; and the impact device is fixedly installed on the test bench body, and the impact device is connected to a piston rod of the water hydraulic cylinder.

The invention provides a cutting device for helium steel cylinder production, which comprises a base, a lifting mechanism, a front transmission device, a middle transmission device, a cutting mechanism and a rear transmission device. The lifting mechanism, the front conveying device, the middle conveying device and the inclined base are sequentially arranged on the base from left to right. The cutting mechanism is arranged on the base and corresponds to the middle conveying device. According to the cutting device for helium steel cylinder production, the base, the lifting mechanism, the front conveying device, the middle conveying device, the cutting mechanism and the rear conveying device which are arranged are matched with one another. According to the gas tank cutting device, when a gas tank is cut, the conveying wheel set which is in contact with the gas tank and is horizontally arranged originally is deformed into an arc shape, and therefore the cut part can be bent through the gravity of the gas tank. And after the arc shape is formed, the gas tank is cut, and the separated part can automatically slide under the influence of gravity. And the use of personnel is facilitated.

The invention belongs to the technical field of skiing protectors, and an air bag technology is introduced into the skiing protector. Several parts in the protective tool are provided with collision sensors, when the sensors detect collision signals, the helium bottle is rapidly opened, the air bag is inflated, and after the air bag is popped out, impact force caused by collision can be effectively relieved, particularly stress borne by secondary collision is relieved, and meanwhile a skier is protected against secondary damage such as rolling after falling down. Due to the softness of the inflatable air bag, the harm caused by collision can be better reduced, and the harm caused by a series of skiing such as fracture can be better prevented. After one-time use is finished, the air bag can be shrunk, and the protective tool is installed again. The helium tank can be simply replaced and can be used for the second time. And in case of danger, the skier can also actively open the air bag. The protective clothing has the heating function of three parts, and warm keeping measures can be taken under the low-temperature condition.

The application discloses a kind of diving with living cabin gas system and its gas supply method, gas system includes living cabin, and living cabin is equipped with gas connecting plate, it is connected with gas supply unit, pressure reducing pipeline and gas analysis pipeline, gas supply unit includes shunt compressed air gas supply pipeline and helium-oxygen gas supply pipeline, compressed air gas supply pipeline is connected with multiple shunt compressed air bottle, helium-oxygen gas supply pipeline is connected with shunt liquid oxygen dewar flask and helium bottle, the outlet of liquid oxygen dewar flask is connected with helium-oxygen gas supply pipeline by first electromagnetic regulating valve, the outlet of helium bottle is connected with helium-oxygen gas supply pipeline by second electromagnetic regulating valve, compressed air gas supply pipeline includes first branch pipe and second branch pipe in living cabin, and the outlet end of busbar is connected with multiple respirators.The application can realize smooth switching from compressed air environment to helium-oxygen or helium-nitrogen-oxygen mixed gas environment, to improve the safety, economy and system flexibility of gas adaptation in early deepwater diving operation.

The utility model discloses an ignition body helium liquidity detection device, which is used for detecting the leakage rate of an ignition body by connecting a helium tank and helium leakage detection equipment, and comprises an upper die and a lower die which are arranged up and down, the upper die and the lower die are of hollow structures, the hollow parts of the upper die and the lower die are communicated, and the ignition body is placed in the communicated hollow part of the upper die and the lower die. The side wall of the ignition body is tightly attached to the inner wall of the upper die and the inner wall of the lower die, the upper die and the lower die are both connected with gas pipe joints, a press punch is arranged in the upper die and located on the ignition body, a toggle clamp is arranged on one side of the upper die, and a press head of the toggle clamp is located on the upper die. The utility model solves the problems that the internal space of the ignition body is narrow and the sealing performance is not easy to detect.

The application discloses a kind of motorized saturated diving systems, including living cabin module, diving bell module, sling module, life support equipment module, centralized operation control module and gas source module, living cabin module includes No.1 saturated living cabin, No.2 saturated living cabin and transition cabin, diving bell module includes diving bell body, emergency gas cylinder and annular airbag, sling module includes bell winch, guide cable winch, umbilical winch, guide cable ballast, door type hanger and hydraulic device, life support equipment module includes seawater heating device, environmental control system cabin, life water supply device and power distribution cabinet, centralized operation control module includes living cabin console, diving bell console and electrical control cabinet, gas source module includes helium cylinder, oxygen cylinder, mixed gas cylinder, compressed air cylinder, liquid nitrogen dewar and liquid oxygen dewar.The adaptability and safety of the system under different operating depths are improved by standardizing the configuration and organic linkage of each functional module.

The present invention relates to a liquid rocket engine nozzle back-pressure low-temperature spray test system. A low-temperature helium medium is supplied via a helium cylinder, a helium delivery pipeline, a heat exchanger, and a low-temperature helium delivery pipeline. Cryogenic cooling of the helium is achieved via a nitrogen cylinder, a nitrogen booster delivery pipeline, a liquid nitrogen container, and a liquid nitrogen cooling delivery pipeline. A back-pressure chamber back-pressure environment is achieved via a nitrogen cylinder and a nitrogen back-pressure delivery pipeline. Liquid nitrogen test medium is supplied via a nitrogen cylinder, a nitrogen booster delivery pipeline, a liquid nitrogen container, and a liquid nitrogen test delivery pipeline. The back-pressure chamber is used to secure the product and create a low-temperature back-pressure spray environment, allowing for visual measurement of the spray field. This allows for measurement of the atomization characteristics of the nozzle in a low-temperature back-pressure environment.

The utility model provides a solid hydrogen storage alloy material activating and sampling device, which belongs to the technical field of solid hydrogen storage and comprises an activating unit and a sampling unit, the activating unit comprises a high and low temperature all-in-one machine, a helium steel cylinder and a hydrogen steel cylinder, the sampling unit comprises a glove box, and the high and low temperature all-in-one machine is communicated with a circulating water tank. The solid hydrogen storage alloy material activating and sampling device solves the problems that an existing solid hydrogen storage alloy material activating and sampling device cannot repeatedly activate a solid hydrogen storage alloy material, the hydrogen absorption and hydrogen desorption capacity of the solid hydrogen storage alloy material is reduced, and the practicability is greatly reduced.

The present invention discloses a mixed gas shield pressure operation life support system, which is suitable for non-saturated shield high-pressure operation, and includes an air compressor module, a compressed air storage tank, a gas source bottle group, a mixed gas distribution module, a man cabin and a micro-pressure oxygen chamber; the air compressor module stores compressed and purified air in the compressed air storage tank; the gas source bottle group includes a helium cylinder group and an oxygen cylinder group connected in parallel; the mixed gas distribution module includes an automatic distribution component, a manual distribution component and a mixed gas storage tank, which mix and proportion compressed air, oxygen and helium; the man cabin is used for pressurization and decompression of workers before and after pressure work, and an oral and nasal mask respirator and a film hood are provided in the cabin; the micro-pressure oxygen chamber is used to receive workers for oxygen therapy after the decompression of the man cabin is completed. The present invention eliminates the living cabin and the shuttle cabin, and realizes efficient linkage between each gas source module and the man cabin through modular integration, thereby improving work efficiency and safety in a high-pressure pressure operation environment.

The present invention provides a device for measuring the matrix pore pressure conductivity of medium- and high-rank coal cores, comprising a helium cylinder, a methane cylinder, an annular pressure container, and a high-pressure test chamber. The helium cylinder and the methane cylinder are each connected to one end of a volume reference cylinder, a desorption tank, or a piston container, and the other ends of the volume reference cylinder, the desorption tank, and the piston container are each connected to a booster pump. One end of the annular pressure container is respectively connected to the helium cylinder, the methane cylinder, and the high-pressure test chamber input end, and the other end of the annular pressure container is connected to the high-pressure test chamber output end. The helium cylinder and the methane cylinder are both connected to the high-pressure test chamber input port, the high-pressure test chamber output port is connected to the volume calibration container input port, and the volume calibration container output port is respectively connected to the volume reference cylinder, the desorption tank, and the piston container. The high-pressure test chamber includes sealed end caps at both ends and a high-pressure test chamber disposed between the sealed end caps. A sleeve is disposed within the high-pressure test chamber, and a core is disposed within the sleeve. The conductivity measuring device of the present invention provides a theoretical basis for the formulation of medium- and high-rank coalbed methane solutions.

The present invention discloses a <supgt;201< / supgt;Hg<supgt;+< / supgt; isotope mercury ion microwave frequency standard device. In a specific embodiment, the device includes: a helium gas cylinder, a helium leak, and a mercury-201 isotope furnace connected in sequence for generating mercury-201 isotope; the mercury-201 isotope furnace is connected to a hybrid ion trap through a stainless steel pipe; the hybrid ion trap is connected with an optical path shaping device, and a mercury-198 pumping spectrum lamp is connected to the light input side of the optical path shaping device. The pumping light formed by the mercury-198 pumping spectrum lamp is shaped into a rectangular light spot by the optical path shaping device and enters the hybrid ion trap; a photon collection device is arranged at the second end face of the hybrid ion trap; the servo control device receives the transition fluorescence signal through the photon collection device to obtain an error voltage, inputs the error voltage to the voltage input end of the local oscillator through a cable, adjusts the frequency output of the local oscillator, and its output end is connected to a pyramidal horn through a 29.9 GHz frequency doubling link and radiates to the hybrid ion trap.

The invention discloses a life support system for mixed gas shield under-pressure operation, which is suitable for unsaturated shield high-pressure operation and comprises an air compressor unit module, a compressed air storage tank, an air source bottle group, a mixed gas distribution module, a human cabin and a micro-pressure oxygen cabin, the air compressor unit module stores compressed and purified air in a compressed air storage tank; the gas source bottle group comprises a helium bottle group and an oxygen bottle group which are connected in parallel; the mixed gas distribution module comprises an automatic gas distribution assembly, a manual gas distribution assembly and a mixed gas storage tank and is used for mixing and proportioning compressed air, oxygen and helium; the man cabin is used for pressurizing and depressurizing before and after working with pressure of an operator, and a mouth-nose mask respirator and a thin film hood are arranged in the cabin; and the micro-pressure oxygen cabin is used for receiving the operating personnel for oxygen therapy after the decompression of the human cabin is completed. A living cabin and a shuttle cabin are omitted, efficient linkage of the air source modules and the human cabin is achieved in a modular integration mode, and the working efficiency and safety in the high-pressure working environment are improved.

The invention provides a battery pack airtight helium detection system and method, and belongs to the technical field of battery pack quality detection. The system comprises a helium mixing work station; a helium detection station; a Pack trolley; the cover box helium detection tool is arranged at the top end of the Pack trolley; the upper computer is respectively connected with the helium mixing work station, the helium detection work station and the Pack trolley; the helium mixing work station comprises a helium mixing frame; the at least one helium mixing cabinet is arranged at the top end of the helium mixing frame and is connected with the upper computer; the helium cylinders are arranged on the side edge of the helium mixing frame; and the input end of the helium filling pipeline is communicated with the output end of the helium mixing cabinet. The battery pack air tightness detection device has the advantages that the reliability of battery pack air tightness detection is greatly improved, and the omission ratio is greatly reduced.

The invention provides a cable deicing device based on a floating airship, and relates to the technical field of cable deicing equipment, and the cable deicing device comprises an airship which comprises an airship main body and a helium tank fixed below the airship main body, and a pipeline of the helium tank is communicated with an air bag of the airship main body; the mechanical claws are arranged on the front portion and the rear portion of the lower portion of the airship body correspondingly; the deicing device is mounted below the airship main body; the deicing device comprises a mounting base and two deicing subunits, the mounting base is fixedly hung below the airship body, and the two deicing subunits are fixed to the mounting base in the advancing direction of the airship; the deicing subunit comprises a motor and two rotating shafts, each rotating shaft is connected with a plurality of ice beating heads, and the petal-shaped part of each ice beating head is provided with an ice beating rod, so that the ice beating heads are driven to rotate through the rotating shafts, and ice on the cable is removed through the ice beating rods. According to the deicing device, the deicing effect under the complex icing condition is guaranteed, and meanwhile the cruising ability of the deicing device and the adaptive capacity of the deicing device in the severe environment are improved.

The utility model relates to the field of new energy battery detection, in particular to a multifunctional helium filling trolley for helium detection, which comprises a movable trolley body, a helium filling pipeline, an evacuation pipeline and a discharge pipeline are arranged on the trolley body, and the helium filling pipeline, the evacuation pipeline and the discharge pipeline are communicated with a liquid injection port of a battery pack in parallel; the vehicle body is provided with a helium tank for filling helium into the battery pack through a helium filling pipeline, and the vehicle body is also provided with a vacuum pump for performing negative pressure pumping treatment on the battery pack through an evacuation pipeline. According to the utility model, the mobile leak detection of the battery is realized, and the leak detection efficiency of the battery is greatly improved.

The invention discloses a residential cabin gas system for diving and a gas supply method thereof.The gas system comprises a residential cabin, the residential cabin is provided with a gas connecting plate, the gas connecting plate is connected with a gas supply unit, a pressure reduction pipeline and a gas analysis pipeline, and the gas supply unit comprises a compressed air supply pipeline and a helium-oxygen supply pipeline which are connected in parallel; the compressed air supply pipeline is connected with a plurality of compressed air bottles which are connected in parallel, the helium-oxygen supply pipeline is connected with a liquid oxygen Dewar flask and a helium bottle which are connected in parallel, an outlet of the liquid oxygen Dewar flask is connected with the helium-oxygen supply pipeline through a first electromagnetic regulating valve, and an outlet of the helium bottle is connected with the helium-oxygen supply pipeline through a second electromagnetic regulating valve. The compressed air supply pipeline comprises a first branch pipe and a second branch pipe in the residential cabin, and the outlet end of the busbar is connected with a plurality of respirators. According to the invention, stable switching from a compressed air environment to a helium-oxygen or helium-nitrogen-oxygen mixed gas environment can be realized, so that the safety, economical efficiency and system flexibility of gas adaptation in the early stage of deepwater diving operation are improved.

The helium recovery and purification system comprises a raw material gas port, a low-purity helium filling port, a high-purity helium filling port, a gas water bath heater, a first proportioning valve, a medium-pressure dryer, a balloon, a first-stage purifier and a second-stage purifier, an inlet of the gas water-bath heater is connected with a raw material gas port; the outlet is connected with the inlet of the medium-pressure dryer through a first proportioning valve; an outlet of the medium-pressure dryer is connected with the primary purifier; the primary purifier is connected with the air bag; an outlet of the airbag is connected with an inlet of the helium compressor; an outlet of the helium compressor is connected with an inlet of the high-pressure dryer; an outlet of the high-pressure dryer is divided into two branches, one branch is connected with the low-purity helium filling port, and the other branch is connected with the secondary purifier; and the secondary purifier is connected with the high-purity helium filling port. According to the invention, the problem of helium waste in the leak detection process of the high-pressure seamless hydrogen / helium cylinder is solved, and two purification schemes can be flexibly switched according to field requirements.