110results about How to "Improve oxygen production efficiency" patented technology

An integrated photoelectrochemical (PEC) cell generates hydrogen and oxygen from water while being illuminated with radiation. The PEC cell employs a liquid electrolyte, a multi-junction photovoltaic electrode, and a thin ion-exchange membrane. A PEC system and a method of making such PEC cell and PEC system are also disclosed.

The invention particularly relates to a method for preparing an electrocatalytic water-splitting oxygen production electrode, with Fe / Ni duplex metal coordinating with trimesic acid, of a metal organic framework material and belongs to the field of electrodeposition / electrocatalysis. The method comprises the steps that (1) Ni(NO3)2.6H2O, Fe(NO3)3.9H2O and the trimesic acid are all dissolved in N,N-dimethylformamide, then tributylmethylammonium methyl sulfate is added, and sufficient stirring is conduced till all the components are completely dissolved, so that electrolyte, with the Fe / Ni duplex metal coordinating with the trimesic acid, for the metal organic framework material is obtained; (2) a standard three-electrode system is assembled by using foamed nickel as a working electrode, a silver / silver chloride saturated electrode as a reference electrode, a platinum sheet as a counter electrode and the solution prepared in the step (1) as the electrolyte; and (3) the standard three-electrode system assembled in the step (2) is connected to an electrochemical workstation, and the working electrode is taken out of the electrolyte, cleaned and dried after constant-potential electrodeposition is conducted, so that the electrocatalytic water-splitting oxygen production electrode is obtained.

The invention provides a nitrogen-oxygen separation device and a corresponding oxygenerator. The nitrogen-oxygen separation device comprises a gas intake module, a separation module and an oxygen output module; the gas intake module comprises a sealing cover, a switching rotation sliding block and a drive motor; the separation module comprises at least two molecular sieve assemblies, a molecular sieve front cover and a molecular sieve back cover; the oxygen output module comprises a sealing element and a gas outlet element. The invention also provides the oxygenerator. Due to the arrangement of the gas intake module in the nitrogen-oxygen separation device and the corresponding oxygenerator, the nitrogen-oxygen separation device has the advantages of simple structure, small size and low manufacture cost; and at the same time, due to the arrangement of the gas intake module, the nitrogen-oxygen separation device has good air tightness and high oxygen generating efficiency.

The invention discloses a catalytic system containing a duplex pyridine ruthenium (II) complex, which includes a duplex pyridine ruthenium (II) complex, an oxidizing agent and a solvent. The invention further discloses a preparation method of the duplex pyridine ruthenium (II) complex, and an oxygen production method utilizing the catalytic system. The catalytic system can realize efficient catalytic oxygen production, and is simple to operate, good in repeatability and high in oxygen production efficiency; and the system is high in stability, the oxygen production amount is calculated to be up to 783mumol based on the total volume of the system, which is 4ml, the oxygen conversion number is calculated to be 979 based on a catalyst, and the system service life is as long as 8 hours.

The invention discloses a digital intelligent oxygen generation system and a control method. In the digital intelligent oxygen generation system, a gas outlet of a gas inlet filtering system is communicated with a compressor, a gas outlet of the compressor is communicated with an air inlet of an electromagnetic gas distribution valve through a heat dissipation device, the electromagnetic gas distribution valve is communicated with a first molecular sieve tower and a second molecular sieve tower, a first waste gas outlet and a second waste gas outlet of the electromagnetic gas distribution valve are both communicated with the exhaust filtering system, gas outlets of the first molecular sieve tower and the second molecular sieve tower are communicated with an oxygen storage tank through an electromagnetic pressure equalizing valve assembly and a one-way valve control assembly, the oxygen storage tank is communicated with an oxygen concentration sensor through a one-way valve, the oxygen concentration sensor is communicated with an electronic oxygen flow adjusting device through a one-way valve, and the electronic oxygen flow adjusting device is communicated with a humidifier. The system can be suitable for oxygen concentrations required by different altitudes, the oxygen concentration required for a stable operation state is provided, and the desorption effect of the first molecular sieve tower and the second molecular sieve tower is improved.

The invention discloses a light-driven oxygen production type corneal contact lens, a preparation method and application thereof, and belongs to the technical field of corneal contact lenses. The light-driven oxygen production type corneal contact lens is composed of a flexible heterojunction photocatalytic electrode and a silicon-based hydrogel matrix. The preparation method includes: firstly, sputtering a p-type semiconductor and an n-type semiconductor to two faces of a flexible center interlayer through a magnetron sputtering method to prepare the flexible heterojunction photocatalytic electrode, then coating the flexible heterojunction photocatalytic electrode with a passivation layer and performing packaging into the silicon-based hydrogel matrix, and conducting machining and formingto obtain the light-driven oxygen generation type corneal contact lens. According to the invention, the oxygen supply mode that the traditional corneal contact lens carries oxygen with water or allows oxygen to permeate through a channel is changed into a self-oxygen-production oxygen supply mode, so that the wearing comfort and durability of the corneal contact lens are improved. The light-driven oxygen generation type corneal contact lens can absorb harmful light (ultraviolet light) or strong light (blue light and laser) to protect eyes; and the generated high active oxygen, hydrogen and the like have prevention and treatment effects on ophthalmic diseases (keratitis, conjunctivitis and glaucoma) caused by bacteria and viruses.

The invention discloses an automatic conditioner of indoor / in-car air oxygen content, comprising two parts, namely an indoor unit and an outdoor unit. The indoor unit mainly comprises an air oxygen content detection sensor and 4-bit digital display, of which the detection and display range is 0.00-99.99% for displaying the air oxygen content percentage of current indoor / in-car air. The conditioner further comprises an indication panel. The panel comprises colour patterns and characters of plateaus, parks, forests and shores, and can intuitively display natural environment index achieved by current indoor / in-car air oxygen content. The conditioner further comprises an air oxygen content user setting key panel and an infrared remote controller, which is provided with preset keys of parks, forests and shores. The outdoor unit further comprises an oxygen permeable membrane oxygen preparation module, an electric air pump, an air inlet, an air outlet, a cooling fan and a water filter. The invention can set and automatically adjust the indoor / in-car air oxygen content by stimulating air oxygen content indexes of parks, forests and shores, accord with humanized design and have convenient use and wide application scope.

The invention relates to the technical field of fishery breeding equipment, in particular to an oxygen increasing device. The oxygen increasing device comprises an electrolysis device, a water supply device and a power supply device. The electrolysis device comprises a bin body. A plurality of first electrode plates and a plurality of second electrode plates are arranged in an inner cavity of the bin body and are arranged in a staggered mode at intervals. The first electrode plates are connected in parallel. The second electrode plates are connected in parallel. The water supply device comprises a water pump. The water outlet end of the water pump is communicated with the inner cavity of the bin body. The first electrode plates, the second electrode plates and the water pump are all electrically connected with the power supply device. Oxygen is prepared in fishpond water in a water electrolysis mode, and therefore the oxygen content in the pond water is increased, in the oxygen preparation process, oxygen is automatically and fully dissolved in water, the content of oxygen in the water is increased, influences caused by weather and air pressure are avoided, the oxygen preparing efficiency is high, oxygen can be fast prepared, energy conservation and environment protection are achieved, meanwhile water quality is no affected, and the survival environment of a fish school is guaranteed.

Crankshaft driven piston type molecular sieve oxygen generation system consists of four sets of piston cylinder oxygen generation devices A, B, C and D, each piston cylinder oxygen generation device includes piston, piston cylinder, crankshaft, connecting rod, silo, oxygen exhaust valve , intake valve and nitrogen exhaust valve; it is characterized in that: a piston is installed in the piston cylinder of each set of piston cylinder oxygen generator, the lower end of the piston cylinder is a silo, the upper layer of the silo is a filter layer, and the lower layer of the silo is Oxygen molecular sieve, the funnel-shaped bottom of the silo is connected with the oxygen exhaust valve; there is a piston head in the center of the top plane of the piston, the upper end of the piston head is connected with the connecting rod by the connecting shaft of the piston head and the connecting rod, and the upper end of the connecting rod is connected with the crankshaft by The crankshaft is connected to the connecting shaft of the connecting rod, and the crankshaft is connected to the transmission shaft, so that when the crankshaft rotates around the transmission shaft, it drives the connecting rod to move up and down and makes the upper end of the connecting rod swing back and forth around the connecting shaft between the piston head and the connecting rod, so that the piston moves on the piston. The cylinder moves up and down, and the composition and structure of the four sets of piston cylinder oxygen generators A, B, C and D are exactly the same.

The invention provides a power supply and distribution system electric cable interlayer operation monitoring protective device. A helmet is provided with an outer shell and an internal net in contact with a human head; a wireless communication device, an electricity storage device and a positioning device are mounted; people is enabled to conveniently instruct operation at a construction filed, working efficiency can be improved, impact force can be effectively reduced via a buffer ring, safet of a safety helmet can be increased, a heat dissipation fan and a temperature control device can be used for temperature reduction according to a set temperature, and therefore heat dissipation effects can be exerted. The wireless communication device, the positioning device, an illuminating device, an oxygen content sensor, a control device, the heat dissipation fan, a detection assembly, a carbon monoxide detection module, a facial recognition camera and an environment camera are respectively connected with the electricity storage device, the electricity storage device is used for supplying electric power, an electricity quantity of the electricity storage device can be detected via a processor, and the protective device can be prevented from malfunctioning due to a low electricity quantity of the electricity storage device when crisis time comes.

The invention provides a nitrogen-oxygen separation device. The nitrogen-oxygen separation device comprises a first sealing cover, at least two molecular sieve assemblies, a molecular sieve main body, a second sealing cover and an exhausting component, wherein an air inlet for supplying compressed air is formed in the first sealing cover, and an air outlet for exhausting separated nitrogen is formed in the first sealing cover; the molecular sieve assemblies are used for carrying out nitrogen-oxygen separation; the molecular sieve main body is arranged on the peripheries of the molecular sieve assemblies; the second sealing cover is used for controlling air exhausting of the molecular sieve assemblies; the first sealing cover, the molecular sieve main body and the second sealing cover form a first closed space; and the exhausting component is used for outputting separated high-concentration oxygen and forms a second closed space with the second sealing cover. According to the nitrogen-oxygen separation device, an electromagnetic valve is controlled to control the molecular sieve assemblies to carry out nitrogen-oxygen separation and exhausting, so that a specific exchanging channel structure does need to be arranged to determine the molecular sieve assemblies for nitrogen-oxygen separation, the structure of the nitrogen-oxygen separation device is simplified, and the oxygen production efficiency of the nitrogen-oxygen separation device is improved.

The invention discloses an oxygen generator, the oxygen generator comprises an outer casing, a molecular sieve bed disposed on one side of the outer casing, an oil-free compressor disposed on the other side of the outer casing, a solenoid valve disposed on one side of the oil-free compressor, a check valve disposed on one side of the top of the molecular sieve bed, an oxygen storage tank assemblydisposed at the top of one side of the molecular sieve bed, an oxygen supply joint disposed at the top of the molecular sieve bed, a control panel disposed on one side of the oil-free compressor, a battery on the top of the oil-free compressor, a charging connector on one side of the oxygen supply joint, a quick release filter cover on the side of the outer casing, and a bottom cover on the bottomof the outer casing. The compact structure of the oxygen generator makes the oxygen generator smaller, lighter, more portable, and the oxygen generator has high oxygen production efficiency, is moreenergy-saving and environmentally friendly, and can be used in a high altitude environment.

The invention discloses an oxygen production system based on high-temperature oxygen permeation membranes. The oxygen production system comprises an oxygen permeation membrane group, wherein the oxygen permeation membrane group is formed by stacking a plurality of oxygen permeation membrane repeating units; the cavity of each repeating unit is divided into an air side and an oxygen production side by a ceramic oxygen permeation membrane in the oxygen permeation membrane repeating unit; each air side is provided with an air inlet and a nitrogen gas outlet; and each oxygen production side is provided with an oxygen gas outlet. Each oxygen production side is provided with a water vapor inlet, the oxygen gas outlet of each oxygen production side is connected with a condenser, and each condenser is provided with a condensate water outlet and an oxygen gas outlet. According to the invention, high-temperature water vapor is introduced into the oxygen production side of an oxygen-permeable membrane reactor, and the water vapor is used for balancing differential pressure between two sides of each high-temperature oxygen-permeable membrane and keeping the working temperature during oxygen production, so that the ceramic membranes are prevented from being damaged. The thickness of the oxygen permeation membranes can be reduced, and oxygen production efficiency is improved.

The invention discloses an oxygen-hydrogen all-in-one machine which comprises a machine shell, a molecular sieve oxygen production module and an electrolytic hydrogen production module are arranged in the machine shell, an oxygen-hydrogen connector is arranged on one side of the machine shell, and the molecular sieve oxygen production module and the electrolytic hydrogen production module enable oxygen and hydrogen to have the same air pressure during output through an oxygen pressure regulating valve and a hydrogen pressure regulating valve respectively. An oxygen flow limiting hole and a hydrogen flow limiting hole are respectively formed in the output ends of the oxygen pressure regulating valve and the hydrogen pressure regulating valve, and oxygen and hydrogen communicate with the oxygen-hydrogen connector after passing through the oxygen flow limiting hole and the hydrogen flow limiting hole; and the sectional area ratio of the oxygen flow limiting hole to the hydrogen flow limiting hole is greater than 24:1. The volume ratio of oxygen to hydrogen in each link of the equipment is larger than 24:1 by arranging the flow limiting holes, limiting the storage volume and limiting the oxygen and hydrogen production output quantity, and the dangerous and uncontrollable state of an existing oxygen generator and hydrogen production machine combination or an oxygen-hydrogen machine during oxygen and hydrogen mixing is avoided through the multiple installation limiting mode.

The invention provides a cable gallery operation positioning protector of a power distribution system. The cable gallery operation positioning protector comprises a helmet and an oxygen production device connected with the helmet, wherein the helmet is provided with a helmet shell and a glass face mask; the glass face mask and the helmet shell are movably connected; the helmet shell is provided with a wireless communication device, a rechargeable battery, a positioning device, a lighting device, an oxygen content sensor used for sensing the oxygen content in a cable tunnel, a control device, a temperature controller, a detection assembly, a cooling fan, a carbon monoxide detection module, a wireless interphone, a facial recognition camera and an environment camera; the inner surface of the helmet shell is coated with an anti-radiation isolating layer, an LED ultraviolet lamp and a negative-ion generator are arranged in the helmet shell, and a concealed satellite receiving antenna is also arranged in the helmet shell. The cable gallery operation positioning protector is diversified in function and compact in structure, the personal safety of operating personnel is guaranteed, meanwhile, the cable gallery operation positioning protector also has the wireless communication function, so that people can conduct the operation at the construction site conveniently, and the work efficiency is improved; through the positioning device, the location of a wearer is rapidly locked.

The invention discloses a high-efficiency minitype molecular sieve tank. An inner cylinder and a central gas pipe are embedded into the inside of an outer cylinder from outside to inside; the lower part of the outer cylinder is connected with an outer cylinder pedestal; the upper part of the outer cylinder pedestal is provided with a communicating groove, and the lower part is provided with a gas inlet which communicates with the communicating groove; an inner cylinder pedestal, which is fixedly connected with the inner cylinder, is embedded in the communicating groove; the top of the inner cylinder pedestal is provided with a filter tank, and the edge is provided with a filter gas hole; a gap between the outer cylinder and inner cylinder communicates with the communicating groove through the filter gas hole and outer cylinder pedestal; the lower end of the central gas pipe is fixed to the inside of a filter tub; the upper part of the outer cylinder is connected with an outer cylinder top cover; the outer cylinder top cover is provided with a gas outlet; the upper end of the central gas pipe is fixedly connected with the outer cylinder top cover; the upper part of the central gas pipe communicates with the gas outlet, and the lower part communicates with the filter tub; the inner cylinder and outer cylinder are respectively filled with a molecular sieve; the top of the molecular sieve is compacted by an internal gland; and a spring is arranged between the internal gland and the outer cylinder top cover. The high-efficiency minitype molecular sieve tank has the advantages of high oxygen production efficiency and small size, and is convenient to carry and easy to demount and remount.

The invention provides medical molecular sieve oxygen generation equipment, and the equipment comprises a machine box, air filtering silencers are symmetrically arranged on one side of the upper portion of the machine box, an oil-free compressor is arranged below the air filtering silencers and located in a main body, and an air busbar is arranged above the oil-free compressor and located in the main body. An air radiator is arranged above the air busbar and on the inner wall of one side of the main body, a freeze dryer is arranged below the air radiator and in the main body, one side of the freeze dryer is connected with a precision filter, the precision filter is communicated with an air confluence tank, the air confluence tank is connected with an air conveying hose, and the air conveying hose is connected with an air outlet; the gas conveying hose is connected to the molecular sieve assembly, the molecular sieve assembly is connected with the oxygen busbar, gas can be effectively and rapidly filtered through the molecular sieve assembly, impurities in the gas can be filtered out to the maximum extent, and the gas can be subjected to a series of cooling and water removal to ensure the quality of produced oxygen.

The invention provides a substation maintenance operation monitoring safety protection device. The external surface of a shell is provided with a solar cell panel, a lighting device, an oxygen content sensor, a control device, a temperature controller, a detection assembly, a heat radiation fan, a power storage device, an SF6 sensing module, and a carbon monoxide detection module, the SF6 sensing module is used for sensing the concentration of sulfur hexafluoride in an environment and transmitting sensed data to the control device, the control device compares the sensed data and can remind a user that the current environment is in an early warning state when the data exceeds an early warning value, and the control device also can transmit the fact that the smoke amount, the high-light amount, the temperature amount and the humidity amount exceed preset values to a host computer through a wireless communication device so that management personnel of the host computer understands condition information of the internal environment of the substation in real time, correct command can be carried out in time, and the personnel safety is protected.

The invention provides an indoor air oxygen supplementation refreshing device. A ventilation dustproof net is arranged at the upper part of an oxygen enrichment magnetized chamber shell which is arranged outdoors; the lower part in the oxygen enrichment magnetized chamber shell is filled with water; a polyoxy magnetized wheel with the lower part arranged in water is arranged on the front side wall and the rear side wall of the oxygen enrichment magnetized chamber shell; a speed regulating motor is arranged out of the oxygen enrichment magnetized shell; the output shaft of the speed regulating motor is connected with the polyoxy magnetized wheel by a connection part; the lower part of the internal wall of the oxygen enrichment magnetized chamber shell is provided with an ultrasonic transducer which faces to the polyoxy magnetized wheel; an ultrasonic atomization shell is arranged in an indoor atomization chamber shell which is communicated with the oxygen enrichment magnetized chamber shell by a communicated pipe; the lower part of the external side of the atomization chamber shell is provided with a drain valve. The indoor air oxygen supplementation refreshing device has the advantages of reasonable design, simple structure, low cost of products, high oxygen enrichment efficiency, convenient application and maintenance, etc., and can be used as an indoor air refreshing, purifying and moistening device.

The invention provides a monitoring safety device for electrical equipment inspection operation. A solar cell panel, an illuminating device, an oxygen content sensor, a control device, a temperature controller, a detection component, a cooling fan, an electricity storage device, a sulfur hexafluoride sensing module and a carbon monoxide detection module are arranged on the outer surface of an electrical plastic shell. The sulfur hexafluoride sensing module is used for sensing the concentration of sulfur hexafluoride in the environment and transmitting sensed data to the control device. The control device conducts sensed data comparison and reminds a user that the current environment is in an early warning state when the sensed data exceed an early warning value, and the control device can also transmit smoke amount, hard light amount, temperature value and humidity value which exceed preset values to an upper computer through a wireless communication device, so that upper compute management personnel can learn the internal environment condition of electrical equipment in real time and give correct commands in time to guarantee personnel security.

The invention discloses a preparation method of an SLATON catalyst for catalyzing visual light to decompose water to prepare oxygen. The preparation method comprises the steps of carrying out combustion reaction through direct temperature programming in a muffle furnace after sufficiently dissolving a soluble strontium salt, a soluble lanthanum salt, a soluble aluminum salt, a soluble tantalum salt and a combustion aid in a methanol and water mixed solution, keeping a high-temperature stage for a certain time, and naturally cooling to form a precursor; then, carrying out nitridation and high-temperature treatment on the precursor to obtain SLATON perovskite-type nitrogen oxide powder; and loading a catalyst promoter on SLATON serving as a main catalyst, and then, coating a nitrogen inhibitor through photodeposition to obtain a visual light responsive catalyst for photolyzing water to prepare hydrogen. The SLATON catalyst has the advantages of high efficiency, stability, environment friendliness, easily-obtained raw materials, low cost and high catalytic hydrogen preparation efficiency; and the SLATON catalyst has visual light catalytic activity and is capable of sufficiently converting and utilizing solar energy and easy to apply and popularize.

The invention discloses an efficient industrial oxygen production system and an oxygen production process. The system comprises an air purification cylinder, a refrigeration unit, a condenser heat dissipation unit, a low-temperature conduction heat preservation unit, a pressure tank and an oxygen filtering unit; one end of the air purification cylinder is connected with an air inlet, and the otherend of the air purification cylinder is connected with an inlet of a compressor II through an air guide pipe I; an outlet of the compressor II is connected with the top of the pressure tank through an air guide pipe II; an air inlet electromagnetic valve is connected to the air guide pipe II in series; a nitrogen outlet pipe is connected to the top of the pressure tank; and a nitrogen outlet electromagnetic valve is connected to the nitrogen outlet pipe in series, and the top of the pressure tank is further connected with the top end of an oxygen filtering unit through an oxygen outlet pipe.Air can be purified in advance, dust and moisture are removed, the influence on oxygen production is avoided, the refrigeration efficiency of a liquefaction container is high, accordingly, the air liquefaction efficiency is improved, the oxygen production efficiency is improved, and an oxygen-enriched separation membrane can be used for further improving the oxygen purity when liquefied oxygen isrefilled.

The invention belongs to the technical field of electromagnetic valves, and particularly relates to an oxygen production valve system. The small valve pilot oxygen production valve system comprises an oxygen production valve main body and two oxygen production molecular sieves, and the oxygen production valve main body comprises a main valve body, two sets of oxygen production assemblies and two pilot valves. The two sets of the oxygen production assemblies share one air inlet and one air outlet, the air outlets of the two sets of the oxygen production assemblies are mutually independent, and pilot valve ports in the two sets of the oxygen production assemblies independently correspond to the control of one pilot valve. The two air outlets of the two sets of the oxygen production assemblies are respectively and independently communicated with air inlets of the two oxygen production molecular sieves. Two inlets of a three-way valve are respectively communicated with air outlets of the two oxygen production molecular sieves, and an outlet of the three-way valve is connected with an oxygen collecting end. The oxygen production valve system is used for extracting oxygen from the air, has the mode that the double oxygen production assemblies work intermittently together, and can collect oxygen and exhaust nitrogen in real time.

The invention relates to the technical field of oxygen generation devices, in particular to a portable pressure swing adsorption oxygen generation device. A device body fixing support is provided with a molecule pipe cap confluence plate which is provided with an air pump, a molecular sieve pipe set and an air storage tank. The molecule pipe cap confluence plate comprises an upper molecule pipe cap confluence plate and a lower molecule pipe cap confluence plate. The molecular sieve pipe set is arranged between the upper molecule pipe cap confluence plate and the lower molecule pipe cap confluence plate in a clamped mode. The upper molecule pipe cap confluence plate is provided with an oxygen channel and an oxygen complementation channel. The molecular sieve pipe, the oxygen channel and the air storage tank are communicated in sequence. The oxygen complementation channel is respectively communicated with two molecular sieve pipes, the lower molecule pipe cap confluence plate is provided with an air channel and an air leaking channel, and the air pump, the air channel and the molecular sieve pipes are communicated in sequence. The air leaking channel is communicated with the molecular sieve pipes, and the oxygen channel, the oxygen complementation channel and the air leaking channel are respectively connected with an electromagnetic valve. The portable pressure swing adsorption oxygen generation device is simple in structure, low in machining cost, small in machining difficulty, compact in assembling space, and convenient to carry and transport.

The invention provides a monitoring and protection system for operations of a power supply and distribution system in a low oxygen environment. The monitoring and protection system comprises helmets provided for the personnel to wear on the operating site and a cloud server which is in communication connection with each helmet, and is characterized in that the cloud server and each helmet take an SDH (Synchronous Digital Hierarchy) loop network as a communication medium, and the cloud server realizes synchronous sampling for data of each helmet by adopting an IEEE 1588 synchronization method; switches supporting an IEEE 1588 communication protocol are uniformly arranged in a low oxygen environment area so as to realize network connection between each helmet and the cloud server and network connection between the helmets; each helmet is provided with a helmet shell and a glass mask; the glass mark is movably connected with the helmet shell; and data information of each helmet is uploaded to the cloud server in real time, so that the cloud server is enabled to master operation information in the low oxygen environment in real time, and the monitoring personnel is enabled to command timely and accurately.

The invention discloses a pressurized oxygenator. The pressurized oxygenator comprises an air inlet end, an air filter group, an air compressor, an electromagnetic valve, at least two groups of adsorption tower groups, an oxygen buffer tank and an oxygen outlet pipeline, wherein the air inlet end, the air filter group, the air compressor and the electromagnetic valve communicate with one another;each group of adsorption tower groups comprises a first molecular sieve tower and a second molecular sieve tower which communicate with each other, the first molecular sieve towers communicate with the electromagnetic valve through an air outlet total pipe, the second molecular sieve towers are provided with one-way valves, the middle parts of the second molecular sieve towers are connected with the air outlet total pipe through air outlet branched pipes, shunts are arranged at the upper ends and the lower ends of the first molecular sieve towers and the second molecular sieve towers, shunts are arranged above the air outlet branched pipes in the second molecular sieve towers, molecular sieves are arranged among the shunts in a filling mode, the one-way valves communicate with the oxygen buffer tank through an oxygen total pipe, and an outlet of the oxygen buffer tank is sequentially connected with the oxygen filter groups, a flowmeter and the oxygen outlet pipeline. According to the pressurized oxygenator, the continuity of oxygen generation is ensured and purity of prepared oxygen can be improved, the outlet branched pipes are connected into the second molecular sieve towers, andthe oxygen generation efficiency is improved.

The invention relates to a portable self-rescue respirator, belongs to the technical field of fire disaster first-aid devices, and solves the problems that a self-rescue respirator in the prior art iscomplex to wear and use, high in breathing temperature, incapable of judging product effectiveness and difficult to position a trapped person. The self-rescue respirator comprises a mouth and nose mask, a breathing tube, an oxygen production module, an air bag, an alarm positioning unit, a shell and an oxygen production agent. The mouth and nose mask, the breathing tube and the oxygen productionmodule are sequentially connected; the oxygen production module comprises an oxygen production tank and a four-way unit, the oxygen production tank is connected with the four-way unit, the air bag isconnected with the oxygen production tank, and the oxygen production agent is arranged in the oxygen production tank; and the alarm positioning unit is arranged on the air bag, and the oxygen generation module is covered with the shell. The self-rescue respirator is convenient to carry and use, the oxygen production temperature is reduced, the experience feeling is comfortable, meanwhile, whetherthe oxygen production agent loses efficacy or not can be visually determined, and rescuers can conveniently determine the position of the trapped person due to an alarm positioning function of the self-rescue respirator.

The invention discloses a comprehensive operation system for a railway operation train set in an alpine region. The comprehensive operation system for the railway operation train set in the alpine region includes a power supply unit, the power supply unit includes a pantograph and a power control device, and the power control device includes a multiple peak clipping network and transient suppression unit, a rectification filtering clipping network, an ultra-large-scale soft-switching PWM pulse-width modulation circuit and an SPWM inverter circuit, single-phase AC850V is filtered by the multiple peak clipping network and transient suppression unit to remove high-frequency peaks and multiple harmonic sand then enters the rectification filtering clipping network to convert an alternating current power supply to a direct current power supply, and finally the direct current power supply is inverted to a three-phase AC380 / 220V alternating current power supply through the ultra-large-scale soft-switching PWM pulse-width modulation circuit and the SPWM inverter circuit. According to the comprehensive operation system for the railway operation train set in the alpine region, 27.5KV single-phase high voltage under a contact network is converted into a stable and high-quality three-phase four-wire AC380V, and a general-purpose diesel generator set currently used in mobile field operationtrain sets is replaced.