342 results about "Nitrogen cylinder" patented technology

The utility model discloses a high-pressure inflation pipeline structure wound on an IV-type hydrogen storage cylinder inner container, which comprises a nitrogen cylinder, the output end of the nitrogen cylinder is sequentially connected with a high-pressure reducing valve, a one-way valve, a low-pressure reducing valve, a pressure release valve, a pressure gauge and a stop valve through a high-pressure connecting pipe, and the stop valve is connected with the IV-type hydrogen storage cylinder inner container. The high-pressure inflation pipeline is provided with the high-pressure reducing valve, the one-way valve, the low-pressure reducing valve, the pressure release valve, the pressure gauge and the stop valve, so that the functions of monitoring, adjusting and pressure release of the internal pressure during winding of the IV-type hydrogen storage cylinder liner can be realized, and the problem that the IV-type hydrogen storage cylinder liner is expanded and broken due to overlarge pressure or insufficient support due to oversmall pressure during winding and inflation is avoided; and the normal use and the use safety of the IV-type hydrogen storage bottle liner winding are ensured.

The utility model discloses a treatment device capable of accelerating starting of autotrophic denitrification of pyrite, and belongs to the technical field of sewage treatment. The Fe < 3 + > dosing unit comprises a Fe < 3 + > dosing tank (4) and a dosing pump (6); according to the water inlet unit, an aeration head (2) is arranged in a raw water tank (3), the aeration head (2) is connected with a nitrogen cylinder (1) through a valve, filler filled in the reactor is modified pyrite filler particles and modified ceramsite, the bottom of the reactor is connected with an aeration pump, and a Fe < 3 + > dosing tank (4) is connected with a water inlet (7) in the bottom of the reactor (13) through a dosing pump (6). The method comprises the following steps: aerating sludge, standing, discharging water, and adding ferric iron into the water subjected to nitrogen aeration treatment to carry out accelerated reaction. By adopting the technology of the utility model, the starting can be quickly carried out for more than 10 days.

The invention relates to a multifunctional integrated liquid cooling plate testing machine which comprises a cabinet body, a testing inlet pipe and a testing outlet pipe which are used for being connected with a liquid cooling plate are arranged on the cabinet body, a pure water tank and a nitrogen cylinder are arranged in the cabinet body, a first liquid outlet and a first liquid return opening are formed in the pure water tank, the first liquid outlet is communicated with the testing inlet pipe through a first pipeline, and the first liquid return opening is communicated with the testing outlet pipe through a second pipeline. The first liquid return port is communicated with the test outlet pipe through a second pipeline, the first pipeline is provided with a variable frequency circulating pump, the nitrogen cylinder is communicated with a third pipeline, the third pipeline is connected with the first pipeline through a first stop valve, the first stop valve is communicated with a fourth pipeline, and the fourth pipeline is connected with the second pipeline through a first three-way valve. The first pipeline, the second pipeline, the third pipeline and the fourth pipeline are provided with a cleanliness testing assembly, a thermal resistance testing assembly and an air tightness testing assembly. The liquid cooling plate testing device has the effect of realizing integrated testing of the liquid cooling plate.

The present invention provides a nitrogen purge device for purging the mirror surface of a spectrometer detector, the nitrogen purge device comprising a nitrogen bottle, an air inlet pipe connected to the nitrogen bottle, a one-inlet-two-outlet valve whose air inlet end is connected to the air inlet pipe, a purge air path connected to one air outlet end of the one-inlet-two-outlet valve, and a pressure-limiting check valve connected to the other air outlet end of the one-inlet-two-outlet valve, wherein the purge air path is arranged away from one end of the one-inlet-two-outlet valve toward the mirror surface of the spectrometer detector. The nitrogen purge device of the present invention can start the spectrometer detector after the air in the air inlet pipe is exhausted by arranging the one-inlet-two-outlet valve and the pressure-limiting check valve. The nitrogen purge device of the present invention can better protect the spectrometer detector, while saving the time of the staff and avoiding the waste of nitrogen.

The invention belongs to the technical field of metal material and coating performance detection, and particularly relates to a high-pressure hydrogen permeation testing device and method.The testing device comprises a gas phase system and an electrochemical testing system, and the gas phase system comprises a high-pressure kettle, a hydrogen cylinder, a nitrogen cylinder and a vacuum treatment device; the autoclave is sealed and communicated with the hydrogen cylinder, the nitrogen cylinder and the vacuum treatment device; a first test port is formed in the upper part of the autoclave; the electrochemical testing system comprises an electrochemical workstation and an electrolytic tank; the electrolytic tank is connected to the upper part of the autoclave; the electrolytic tank is provided with a reference electrode and an auxiliary electrode, the lower part of the electrolytic tank is provided with a second test port, and the first test port and the second test port are connected with closed rubber rings and jointly clamp a sample to be tested through the closed rubber rings; the electrochemical workstation is electrically connected with the auxiliary electrode, the reference electrode and the to-be-tested sample, so that the service condition of the to-be-tested sample can be accurately simulated, the hydrogen permeation process in the actual working condition can be more truly reflected, and the accuracy of a hydrogen permeation test experiment is improved.

The utility model discloses a quality detection device for automobile shock absorber machining, and relates to the technical field of automobile shock absorber machining, the quality detection device comprises a detection box body and a water tank, and further comprises a weather simulation assembly, and the weather simulation assembly comprises a heated assembly and a cooling assembly; the heated assembly comprises a heater fixed outside the detection box body, and the air outlet end of the heater penetrates into the detection box body through an air outlet pipe and then is fixedly communicated with a runway heating ring; the cooling assembly comprises a nitrogen cylinder fixed outside the detection box body, and the gas outlet end of the nitrogen cylinder penetrates into the detection box body through a gas outlet pipe and then is fixedly communicated with a runway cooling ring; the problems that in the prior art, when the sealing performance of the automobile shock absorber is detected at normal temperature, an automobile may run in an extreme weather environment such as an extreme high-temperature environment and an extreme low-temperature environment in an actual situation, so that the extreme environment temperature needs to be simulated when the automobile shock absorber is detected, and the detection time is shortened are solved. And the problem of detecting the automobile shock absorber is solved.

The invention provides sampling equipment for lithium ore flotation tailing recovery and a resource recovery method, and relates to the technical field of recovery sampling, the sampling equipment comprises a mounting frame, a movable sampling mechanism, an adjusting gear and an inerting protection mechanism; the movable sampling mechanism comprises a sliding rail, a movable seat, a rotating seat and a sampling cup, the movable seat is slidably connected with the sliding rail, the rotating seat is fixedly arranged at the top of the movable seat, the inner side of the rotating seat is rotatably connected with a rotating shaft, the front end of the rotating shaft is fixedly connected with the sampling cup, and the sampling cup is fixedly connected with the movable seat. And the rear end of the rotating shaft is fixedly connected with the adjusting gear. According to the scheme, nitrogen in the nitrogen cylinder is finally sprayed out through the hose and the spray head, a nitrogen curtain is formed at the sampling end of the sampling cup, amine substances in foam are prevented from being oxidized by air, the viscosity of a foam sample is prevented from being sharply reduced, and the accuracy and representativeness of foam viscosity detection data are improved; the use amount of the amine medicament can be adjusted in a targeted manner, and the polluted water body can be treated.

A device and method for preparing high-purity metals by vacuum distillation and bidirectional step condensation, the device comprising an atmosphere control device, a vacuum distillation device, a charging device, an intelligent control device, and an exhaust gas treatment device. The atmosphere control device comprises a nitrogen bottle and a control valve located above the bottle mouth for controlling the opening and closing of the nitrogen bottle. The vacuum distillation device comprises a vacuum distillation device and a vacuum pump connected to the vacuum distillation device via a pipeline. The charging device is located in the middle of the vacuum distillation device, and the intelligent control device is connected to the vacuum distillation device. The exhaust gas treatment device comprises an impurity removal device. The vacuum distillation device is provided with a plurality of heaters, which are arranged in parallel along the length direction of the charging device and the condensation zone on both sides of the vacuum distillation device. The present invention also includes a method for preparing high-purity metals using the device. The device of the present invention has a simple structure, is not restricted by the gravity field, is convenient for sampling, and has high impurity removal efficiency.

This invention relates to the field of fire door technology, specifically a smoke-blocking fire door, including a fire door frame, a fire door body mounted on the fire door frame via hinges, a door closer connected to the top of the fire door frame at the top, a handle mounted on the fire door body, and a smoke-blocking device mounted on the fire door body. The smoke-blocking device comprises a housing, a shaking device, a plate, a foam bottle, a nitrogen cylinder, pipes, a connector, and a metal tube. This invention injects foam between the fire door frame and the fire door body. The foam from the foam bottle is injected into the space between the fire door body and the fire door frame through the metal tube. The foam expands upon contact with air, filling and sealing the space between the fire door body and the fire door frame, preventing smoke from a fire from spreading upwards through the stairwell.

The invention discloses a shock absorber, a shock absorption method and a vehicle, and relates to the field of shock absorption devices. The shock absorber comprises an oil storage barrel. One end of the piston rod penetrates into the oil storage barrel from the open end of the oil storage barrel; the side wall of the piston rod and the opening of the oil storage barrel are sealed; an oil passing hole formed in the axial direction of the piston rod is formed in the piston rod; the main piston valve system is movably arranged in the oil storage barrel and divides the oil storage barrel into a first cavity and a second cavity, and the main piston valve system is fixedly connected with the end, located in the oil storage barrel, of the piston rod; one end of the nitrogen cylinder is connected with the end, away from the oil storage cylinder, of the piston rod through a connecting assembly. When the piston rod moves in the oil storage barrel in a reciprocating mode in the axial direction of the piston rod, part of oil in the oil storage barrel can be transferred between the first cavity and the second cavity through the main piston valve system, and the other part of oil in the oil storage barrel can be transferred between the first cavity and the nitrogen barrel through the oil hole. According to the shock absorber, the shock absorption method and the vehicle, the heat dissipation efficiency can be improved.

The invention discloses a laser cladding device and a cladding method, and relates to the technical field of laser cladding, the laser cladding device comprises a fence, a six-axis industrial robot is arranged in the middle of the inner side of the fence, and a laser cladding head is fixedly arranged on an end effector of the six-axis industrial robot; an air feeder, a water cooler, a laser and an electrical cabinet are sequentially arranged on the left side of the six-axis industrial robot from back to front, and a nitrogen cylinder, a robot control cabinet and a console are sequentially arranged on the right side of the six-axis industrial robot from back to front; and a workbench is arranged under the laser cladding head, a positioning mechanism is arranged at the top of the workbench, and a base body stored material output mechanism is arranged on the left side of the positioning mechanism. Feeding, discharging, positioning and positioning releasing of the base body can be automatically completed, the automation degree is higher, labor is saved, meanwhile, the time needed by operation is shortened, the overall laser cladding efficiency of the base body is improved, and the laser cladding device can be suitable for industrial laser cladding machining of the same base body in a large scale.

The invention discloses a lunar dust interference effect test platform suitable for a vacuum environment and a use method of the lunar dust interference effect test platform, and relates to the technical field of aerospace engineering ground simulation tests.The platform comprises a vacuum container system, a measuring system and a dustproof system; maintaining the normal-pressure and normal-temperature working state of the camera; the measurement system integrates a P IV camera, three high-speed cameras and a heat flow sensor, and realizes the multi-dimensional measurement of the moony dust excitation height / speed / impact range, the erosion pit three-dimensional reconstruction and the engine aerodynamic heat effect. The dustproof system adopts a high-transmittance acrylic dustproof cover and a vacuum gauge for differential pressure monitoring, so that lunar dust is prevented from polluting the heat sink, and the safety of the cover body is protected. The problems of pollution and single measurement of a vacuum system in the prior art are solved, multi-physical-quantity collaborative testing is achieved, key test data are provided for design of the lunar lander, and the method has engineering application value.

The invention discloses a nitrogen shock absorber and a shock absorption method thereof, and relates to the technical field of shock absorbers, the nitrogen shock absorber comprises an oil storage barrel, a piston rod, a lower connecting seat, an upper connecting seat, a central fixing pipe, a piston valve system assembly and a compression hydraulic buffer assembly; the piston rod is slidably connected with the oil reservoir; the lower connecting seat is fixed at one end of the piston rod; the upper connecting seat is mounted at one end of the oil storage cylinder, and a compression hydraulic buffer regulating valve system assembly, a compression high-low speed regulating valve system assembly and a nitrogen cylinder are mounted on the upper connecting seat; the center fixing pipe is fixed to the end, located in the oil storage barrel, of the piston rod. The piston valve system assembly is fixed to the outer wall of the center fixing pipe and divides the interior of the oil storage barrel into a recovery cavity and a compression cavity. The compression hydraulic buffering assembly comprises a hydraulic buffering rod, and the hydraulic buffering rod is communicated with the compression hydraulic buffering adjusting valve system assembly. The performance of the compression hydraulic buffering system is improved, the hydraulic buffering stroke is increased, and the purpose of progressive damping hydraulic buffering is achieved.

The invention discloses a device and a method for testing degradation and dissolution quantity of ion exchange resin, and relates to the field of performance testing of ion exchange resin. An inlet of a peristaltic pump is communicated with a liquid outlet of a liquid inlet box, an outlet of the peristaltic pump is communicated with an inlet of a temperature control heater, the upper end of an exchange column is communicated with an outlet of the temperature control heater, and the lower end of the exchange column is connected with a liquid storage box; the liquid storage tank is connected with the second gas collector, and the nitrogen cylinder gas conveying pipe penetrates into the liquid storage tank. Water washing or pretreatment is completed before testing, then heating temperature is set according to operation conditions, demineralized water or treating fluid is introduced into an exchange column, when gas-phase degradation products need to be collected, the gas-phase degradation products are collected through a first gas collector and a second gas collector, and if the sample is anion exchange resin, high-purity nitrogen is introduced into a liquid storage tank through a nitrogen cylinder, and the sample is collected through a second gas collector. The volatile organic matter is purged into a second gas collector, and finally the degradation and dissolution amount of the ion exchange resin is calculated according to TOC or chemical oxygen demand, the concentration of methanol and trimethylamine and the content of sulfate radicals or ammonia nitrogen.

The present application relates to a kind of high temperature high pressure formation fluid containing large hole fracture plugging simulation device, including nitrogen bottle, liquid storage tank, simulation wellbore, heating insulation cover, back pressure valve and hole fracture isolation plate, there is inner cylinder in upper kettle body, there is simulation leakage layer in inner cylinder, upper kettle body and lower kettle body are connected by flange, hole fracture isolation plate is set between upper kettle body and lower kettle body, back pressure valve is set at the place close to hole fracture isolation plate of lower kettle body, heating insulation cover is set on the outer wall of upper kettle body and lower kettle body.The simulation method for high temperature high pressure formation fluid containing large hole fracture plugging using the above device, including: plugging slurry is discharged or passed through formation fluid and then enters simulation leakage layer;The plugging effect of conventional drilling fluid on small hole fracture leakage layer is judged by the pressure difference of upper kettle body and lower kettle body;The breakthrough pressure of sealing zone is obtained by the pressure difference between upper kettle body and lower kettle body after sealing zone is formed by solidified cementation type plugging slurry.The present application is in line with actual downhole, easy and fast to operate, provides platform and means for the plugging research of formation fluid containing large hole fracture leakage layer.

The invention discloses a nitrogen shock absorber and a design method of a connecting seat thereof, and relates to the technical field of connecting seats, the first end of a nitrogen cylinder module is connected with the first end of the connecting seat, the second end of the connecting seat is connected with the first end of a piston rod module, and a floating piston assembly is arranged in the nitrogen cylinder module; the position, corresponding to one side of the floating piston assembly, of the nitrogen cylinder module is used for storing nitrogen, the position, corresponding to the other side of the floating piston assembly, of the nitrogen cylinder module is used for introducing hydraulic oil, the first end of the piston rod module is used for being connected with a suspension, and the second end of the piston rod module extends into the oil storage cylinder module through the first end of the oil storage cylinder module. Hydraulic oil in the oil storage cylinder module can enter the nitrogen cylinder module through oil passing holes in the piston rod module and the connecting base, and the compression adjusting valve is installed on the connecting base and used for adjusting the flow resistance of the hydraulic oil passing through the oil passing holes. The damping device is simple in structure, good in damping performance and good in road condition adaptability.

This application relates to the field of fabric edge trimming technology, and in particular to a laser edge trimming device for printed fabrics. The device includes a worktable, a laser cutting device and a mounting plate mounted on top of the worktable. A cavity is provided in the middle of the mounting plate. The mounting plate is connected to a horizontal adjustment structure and a vertical adjustment structure. The horizontal adjustment structure is connected to the mounting plate, one end of the vertical adjustment structure is fixedly connected to the horizontal adjustment structure, and the other end of the vertical adjustment structure is connected to the laser cutting device. An air jet device is provided on one side of the mounting plate. The air jet device includes a nitrogen cylinder, an output pipe, and a high-pressure nozzle. The nitrogen cylinder is slidably connected to the mounting plate and is connected to the output pipe. The output pipe is connected to the high-pressure nozzle, which is located on one side of the laser cutting device. A dust collection device is provided on the other side of the mounting plate. The dust collection device includes a vacuum cleaner, a vacuum hose, and a vacuum hood. The vacuum hood is located on the other side of the laser cutting device and is connected to the vacuum hose. The vacuum hose is connected to the vacuum cleaner.

The utility model discloses a composite drawing die for an outer plate on the upper portion of a convex rear wall of a heavy truck cab, and relates to the technical field of heavy truck part machining. A mounting cavity is formed in the female die; a material pressing nitrogen cylinder is mounted in the mounting cavity; the material pressing nitrogen cylinder is partially located in the upper die movable material pressing core. The bottom of the upper die movable pressing core is in contact with a blank; the material pressing nitrogen cylinder drives the upper die movable material pressing core to downwards press the blank; the machine tool drives the female die to gradually move downwards to be in contact with the pressing balance block, so that the female die and the upper die movable pressing core press the blank, and primary drawing is achieved; the machine tool drives the female die and the upper die movable pressing core to gradually move downwards to the blank holder to synchronously move, so that the female die and the male die tightly press the blank, and secondary drawing is achieved; according to the die, a set of drawing die and a machining procedure are omitted, original procedure piece overturning operation between procedures is omitted, workpiece scratching and deformation in the overturning process are avoided, and the appearance quality of products is guaranteed.

The utility model discloses a nitrogen cylinder transportation support, and relates to the technical field of nitrogen cylinder transportation. The support comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support body, buffering assemblies are symmetrically arranged in the support body, fixing assemblies are jointly arranged on the two sides and the interior of the support body, each fixing assembly comprises symmetrically-distributed guide seats, and the guide seats are fixedly installed on the two sides of the support body. A traditional complex bolt connection mode is replaced with the fixing assembly in a magnetic attraction connection mode, when the nitrogen cylinder is assembled and disassembled, the nitrogen cylinder can be rapidly fixed and disassembled only by utilizing the magnetic attraction principle, the buffering assembly is arranged, and through the synergistic effect of a sponge buffering pad, a foamed aluminum buffering layer and a rubber buffering pad, the buffering effect of the buffering assembly is greatly improved. Vibration and impact force in the transportation process can be effectively absorbed, direct collision to the nitrogen cylinders is reduced, and therefore the service life and safety of the nitrogen cylinders are guaranteed.

The present application relates to the field of maintenance, in particular to a main steam isolation valve pressure relief valve automatic calibration device and calibration method. The device comprises: the upper cylinder of the MSIV simulation body is connected with a nitrogen cylinder; the oil tank is connected to the oil inlet of the MSIV simulation body through an oil inlet pipeline, and the oil return outlet of the MSIV simulation body is connected to the oil tank through an oil return pipeline; the inlet electromagnetic valve and the pneumatic pump are in an integrated structure, which is arranged on the oil inlet pipeline, and the pneumatic pump delivers the high-pressure fire-resistant oil in the oil tank to the MSIV simulation body; the inlet electromagnetic valve controls the start and stop of the pneumatic pump; the lower oil cylinder of the MSIV simulation body returns the fire-resistant oil to the oil tank through a flow control valve; two pressure relief valves are arranged in series on the oil return pipeline, and each pressure relief valve is controlled by a quick closing electromagnetic valve; the action of the pressure relief valve is measured by a displacement measuring element; a first pressure measuring element is arranged at the oil return outlet of the MSIV simulation body, and a second pressure measuring element is arranged on the oil return pipeline arranged between the two pressure relief valves. A control system is used to control the actuator to automatically perform function test, and to perform system monitoring, equipment debugging and data playback, and to alarm for the function test that does not pass. The present application simulates the actual operation condition of the pressure relief valve during the action of the MSIV, tests the comprehensive performance of the MSIV pressure relief valve, and then guides the subsequent maintenance direction of the pressure relief valve, finally verifies whether the performance of the pressure relief valve after maintenance is qualified, effectively avoids blind repair and wrong repair; and can also check the new spare parts to confirm their usability.

The invention discloses an underground distributed optical fiber air bag coupling recovery system which comprises an air bag and an inflation control system connected with the air bag. The inflation control system comprises an electromagnetic valve, a high-pressure nitrogen cylinder and a pressurizing inflation pump, the output end of the high-pressure nitrogen cylinder is connected with one end of a main air pipe, the surface of the main air pipe is provided with a plurality of mounting holes and connected with one ends of a plurality of inflation pipes, and the other ends of the inflation pipes are used for being connected with air inlets and air outlets of the air bags; an electromagnetic valve is mounted on each gas filling pipe; the other end of the main air pipe is connected with the input end of the vacuum pump through another corresponding electromagnetic valve. Coupling of the optical cable and the well wall is achieved through inflation and deflation of the air bag, and higher efficiency is achieved; the method adapts to the environment, can resist the high pressure of 10 MPa and the temperature of-30 DEG C to 120 DEG C, and is suitable for the complex underground environment; the device is convenient to operate and supports independent control of a single air bag, and the recovery efficiency is improved by 80% or above.

The invention discloses a cross-contamination-free groove type wafer cleaning machine which comprises a base, the top of the base is fixedly connected with a cleaning groove, the side, away from the cleaning groove, of the base is rotationally connected with a transverse lead screw, the outer wall of the transverse lead screw is in threaded connection with a moving frame, the inner side of the moving frame is rotationally connected with a vertical lead screw, and the vertical lead screw is in threaded connection with the outer wall of the transverse lead screw. And the outer wall of the vertical lead screw is in threaded connection with a moving seat. According to the cleaning machine, the gas storage device is arranged, when the connecting pipe moves upwards to make contact with the gas guide assembly, nitrogen in the nitrogen cylinder fixed to the mounting plate through the fixing frame can flow into the connecting pipe from the gas guide assembly, and then the nitrogen in the connecting pipe can flow into the hose through the collecting pipe; and finally, the nitrogen enters the gas spraying pipe through the inner cavity of the arc-shaped limiting frame, at the moment, the nitrogen can be blown to the surface of the wafer after being guided by the gas spraying pipe, the cleaning liquid attached to the surface of the wafer is blown off, and cross infection is avoided.

The invention relates to an in-situ and ex-situ catalytic pyrolysis device with a movable heating area and a pyrolysis method. The in-situ and ex-situ catalytic pyrolysis device comprises a rack; the reaction tube is axially and horizontally arranged on the rack; the left end of the reaction tube is communicated with a nitrogen cylinder through a rotary joint, a flow meter and a pressure reducing valve; the first end of the three-way pipe is connected with the right end of the reaction pipe through a rotary joint, the second end of the three-way pipe is connected in series with the first condenser and the first gas storage bag through a first stop valve, and the third end of the three-way pipe is connected in series with the second condenser and the second gas storage bag through a second stop valve; the tubular heating furnace is horizontally arranged on the rack in a sliding manner along the axial direction of the reaction tube, and a first heating area and a second heating area which are different in temperature are arranged in the tubular heating furnace; according to the device, on the basis that the in-situ catalytic reaction and the ex-situ catalytic reaction are carried out in the same device, the influence of the heating rate on the rapid pyrolysis of the raw materials is avoided, the full contact between different raw materials in the co-pyrolysis process and the maximum production of target products are ensured, and a catalyst evaluation function is also considered.

The invention relates to the technical field of seawater electrolysis hydrogen production, in particular to a closed water electrolysis hydrogen production system and method applied to an ocean scene. The device comprises a sealed shell, and an electrolytic hydrogen production pipeline, an oxygen side separation pipeline, a hydrogen side separation pipeline, an electrolytic cooling pipeline and a hydrogen elimination and dehumidification pipeline which are arranged in the sealed shell, the hydrogen elimination and dehumidification pipeline comprises a fan and a hydrogen elimination device which are located between the oxygen side separation pipeline and the hydrogen side separation pipeline, one end of the hydrogen elimination device is connected with an oxygen discharge port through a pipeline, and the other end of the hydrogen elimination device is connected with a nitrogen cylinder through an electromagnetic valve; the dehydrogenation and dehumidification pipeline further comprises a hydrogen concentration alarm and an oxygen concentration alarm. The device integrates multiple pipelines of electrolytic hydrogen production, oxygen / hydrogen side separation, electrolytic cooling, hydrogen elimination and dehumidification and the like; all the pipelines work cooperatively, efficient gas-liquid separation, precise temperature control and safe hydrogen elimination and dehumidification are achieved, a complete and efficient hydrogen production system is formed, the system can stably adapt to the complex marine environment, and it is guaranteed that the hydrogen production process is safely, continuously and stably conducted.

The invention discloses an upper arm power assisting structure for hot-line work, and relates to the technical field of electrical equipment, the upper arm power assisting structure comprises an arm support used for supporting an arm and an arm shell, the arm shell is of a cavity structure, a nitrogen cylinder is arranged in a cavity of the arm shell, a piston rod at the front end of the nitrogen cylinder is connected with a steel wire rope, and the other end of the steel wire rope penetrates through the bottom of a pulley; the pulley is fixed to the end, away from the nitrogen cylinder, of the arm shell, one end of the arm shell is rotationally connected with an arm adjusting block, and the steel wire rope penetrates out of the pulley to be fixed to the joint of the arm shell and the arm connecting block. One end of the arm adjusting plate is fixedly connected with the arm support, the other end of the arm adjusting plate is slidably connected with the side wall of the arm shell, and an adjusting button capable of adjusting the length of the arm adjusting plate is arranged on the arm shell. A traditional compression spring is replaced with the gas spring nitrogen cylinder, nonlinear elastic force is provided, the dynamic requirement of human upper limb movement can be better met, and the power assisting effect is improved.

The present invention relates to a multi-condition high-temperature and high-pressure corrosion simulation experimental device and method, belonging to the field of oil and gas cementing. The device is composed of a nitrogen bottle, a corrosive medium storage tank, a flow pump and a maintenance / corrosion kettle. The maintenance / corrosion kettle includes a kettle body, a maintenance gland, a corrosion gland and a back-pressure upper cover. The side wall of the kettle body has a liquid inlet pressure port, a liquid discharge pressure relief port and an exhaust port. The maintenance gland and the kettle body form a closed kettle cavity for curing cement stone; the cement ring upper cover passes through the corrosion gland to form a sealed kettle cavity corrosion cement ring assembly. The method comprises: injecting the corrosive medium into the kettle through a flow pump and pressurizing it, so that the corrosive medium forms a circulation between the reactor and the storage tank, adjusting the pressure of the upper cavity and the kettle cavity to reach the required pressure difference, and ensuring that the cement stone and the corrosive medium form contact under different working conditions. The present invention can simulate the corrosion of the corrosive medium to the cement stone under various working conditions at one time, accurately reflect the corrosion law of cement stone in the well, and thus evaluate the corrosion resistance of the cement stone.

The present application relates to the technical field of activated carbon surface modification, and particularly relates to a method for modifying coconut shell activated carbon by pressure impregnation, which has the following steps: step one: activated carbon is added to deionized water and heated and stirred, then filtered, and the sample is collected and dried to obtain activated carbon AC; step two: the sample is placed in a pressure impregnation device and connected to a nitrogen cylinder; step three: the pressure impregnation device is treated with nitrogen gas, and the treatment is repeated 3-5 times; step four: an impregnation liquid is introduced and impregnated by nitrogen pressure. The method for modifying activated carbon by pressure impregnation makes the impregnation liquid enter the interior of the activated carbon pore diameter, and improves the impregnation efficiency and loading capacity. The modified coconut shell activated carbon prepared by the method has better dispersion and distribution depth of components, and effectively utilizes the specific surface area of the activated carbon.

The utility model discloses a nitrogen balance cylinder system, and particularly relates to the technical field of nitrogen balance cylinders, the nitrogen balance cylinder system comprises a supporting plate, two nitrogen cylinders, two balance oil cylinders and an oil distribution block are installed outside the supporting plate, and the two nitrogen cylinders are distributed at the top of the supporting plate at intervals. Through the design of the two groups of nitrogen cylinders, more stable and uniform air pressure output can be provided, and when the pressure of one group of nitrogen cylinders is reduced, the pressure of the other group of nitrogen cylinders can be quickly supplemented, so that the air pressure stability of the whole system is ensured, and the two groups of nitrogen cylinders can simultaneously work under the condition that the pressure needs to be quickly adjusted and balanced; according to the invention, the two groups of nitrogen cylinders are arranged to provide higher response speed, the configuration of the two groups of nitrogen cylinders increases the redundancy of the system, and even if one group breaks down, the other group can still work, so that the pressure stability can be increased, the response speed can be improved, the system stability can be enhanced, the pressure distribution can be optimized, and the service life of equipment can be prolonged.

The invention relates to the technical field of energy storage, in particular to a nitrogen charging and discharging system for energy accumulators, comprising: an energy storage unit comprising a plurality of energy accumulators and a plurality of nitrogen charging devices connected with the energy accumulators, each nitrogen charging device comprising a driver, a push rod and a valve body, the push rod being driven by the driver for plugging or opening the valve body; the nitrogen matrix comprises a plurality of nitrogen cylinders and a plurality of stop valves arranged on the opening sides of the nitrogen cylinders; the pressurizing unit comprises a pressurizing mechanism and one-way valve sets arranged on the upstream and downstream of the pressurizing mechanism, the input end of the pressurizing mechanism is connected to the nitrogen matrix, and the output end of the pressurizing mechanism is connected to the nitrogen charging device. According to the scheme, the defect that in the prior art, manual operation is tedious in the nitrogen charging and deflating process of an energy accumulator in a hydraulic system is overcome, automatic nitrogen charging and deflating are achieved, and the charging efficiency and the system operation stability are improved.

The utility model discloses a dairy product membrane sterilization equipment, including membrane sterilization equipment and skimmed milk jar, emulsion delivery pipeline communicates with skimmed milk jar, the input end of skimmed milk jar still has nitrogen gas pipeline, and the output of skimmed milk jar communicates through material valve and separation jar, and the top of separation jar is connected with balance pipeline, and balance pipeline communicates with the top and bottom of nitrogen cylinder through two branch pipes respectively, and the material of separation jar output enters membrane sterilization equipment through unloading valve. The dairy product membrane sterilization equipment, in the process of exhausting material, by first nitrogen gas, the material in pipeline is pushed out, balance the pressure in skimmed milk jar simultaneously, make its smooth, the application sets up separation jar in the process of vacuumizing, and the gas in separation jar is extracted, not only can reduce the air content in separation jar emulsion, but also can detect whether pipeline exists sealing problem.