167 results about "Carbon dioxide gas cylinder E" patented technology

The invention discloses a 3D printing device and a 3D printing method by utilizing supercritical carbon dioxide as a solvent. The device mainly comprises a stock unit, an ejection unit, a three-dimensional molding platform unit and a raw material recycling unit, wherein the ejection unit comprises a gas pump, a needle valve, a cooling fan and a resistive heater; the stock unit comprises high polymer material powder, a powder pump, a carbon dioxide gas cylinder, a mixing tank, a liquefied booster pump, a heater, a liquid pump and a gas pump; the three-dimensional molding platform unit comprises an aluminum alloy molding platform and a three-dimensional ball screw sliding table module; and the raw material recycling unit comprises a closed box and a recovered gas pump. According to the method disclosed by the invention, the carbon dioxide gas is turned to be in a supercritical carbon dioxide state, and after the carbon dioxide gas is completely dissolved to produce supercritical carbon dioxide solution containing a high polymer material, the solution is conveyed into the ejection unit by virtue of the liquid pump. The supercritical carbon dioxide serves as a consumable carrier, so that more kinds of high polymer materials are applied to the field of 3D printing, and the overall performances of 3D printing supplies are improved.

The present invention aims to provide a pneumoperitoneum gas heating and humidifying apparatus and a pneumoperitoneum device employing this apparatus, in which there is no contamination of the carbon dioxide gas with bacteria, a clean humidified gas is obtained, and the temperature of gas for which the relay was halted and then restarted does not rise excessively. This pneumoperitoneum gas heating and humidifying apparatus provided with an airline, a water conduit which is provided to at least a portion of the outer periphery of this airline, and water supply ports which are connected to the water conduit, wherein at least a portion of the wall of the airline facing the water conduit is formed of a water permeable membrane. The present invention further provides a pneumoperitoneum device in which a carbon dioxide gas cylinder, a gas flow regulator, and a trocar catheter are sequentially connected via piping.

A refrigerator having a carbonated water production module integrally provided with a carbon dioxide gas cylinder having carbon dioxide gas stored therein and a carbonated water tank to mix purified water with the carbon dioxide gas to produce carbonated water. The carbonated water production module is mounted to the rear surface of the door, and thus it may be cooled by cool air in the refrigeration compartment and be easy to access, and thereby repair and replacement thereof is facilitated. The dispenser includes a carbonated water discharge channel into which carbonated water from the carbonated water tank is discharged, and a purified water discharge channel into which purified water from the water tank is discharged. Since the purified water discharge channel does not pass through the carbonated water tank, a user is allowed to selectively dispense purified water or carbonated water anytime.

The invention discloses a device for measuring the permeability of rock in a fracturing process. The device comprises a triaxial test chamber (1), a core gripping device, a carbon dioxide cylinder (2), a flow monitoring device, a hydraulic oil confining pressure loading system (3) and a computer (4), wherein the hydraulic oil confining pressure loading system (3) comprises an oil pump, a booster pump and an oil tank; the core gripping device comprises a core gripper (11), an air cushion (12), an insulating self-adhesive sealing tape (13) and a thermal shrinkable sleeve (14); an air inlet (15) connected with an air inlet valve (9) and an air outlet (16) connected with an air outlet valve (10) are formed in the upper end and the lower end of the core gripper (11) respectively; the carbon dioxide cylinder (2) is connected with the air inlet valve (9); and the flow monitoring device comprises a glass burette (17) and a rubber hose (18). The invention further discloses a measuring method. The device provided by the invention has the beneficial effects of convenience and easiness in refitting, safety and simplicity in operation, small measuring error, high working efficiency and high utilization ratio of carbon dioxide.

The method of ice particle injection treating transparent electric conductive glass surface uses carbon dioxide ice with radius ranging from several millimeter and 100 millimeter in certain speed, injection angle and distance to spray the transparent glass surface to complete the polishing and cleaning of the transparent electric conductive thin film. It comprises high pressure carbon dioxide gas bottle, air transmission air pipe, gas flow control valve, nozzle connector, nozzle and its angel adjuster, through linkage to connect with the working platform and the gas recovery device. It can improve the surface treatment quality free from water or small quantity of water. It can save water source, reduce the discharge of exhaust water and goods, recover the generated carbon dioxide to reduce contamination to the environment.

The invention discloses a device for testing tri-axial strength of a rock under a supercritical carbon dioxide condition. The device comprises a tri-axial test cabin (1), a rock core clamping device, a gas supply system, a hydraulic oil confining pressure loading system (2) and a computer, wherein a controller and an experiment data acquisition device are arranged in the computer; a heating ring (2) and an oil inlet valve (6) and an oil return valve (7) communicated with the tri-axial test cabin (1) are arranged on the outer wall of the tri-axial test cabin (1); the rock core clamping device consists of a rock core clamping device (10), an air cushion (11), an insulating self-sticking sealing belt (12) and a thermal shrinkable sleeve (13); the gas supply system consists of a carbon dioxide gas bottle (14), a gas supercharger (15) and an air compressor (16) which are sequentially connected. The invention also provides a testing method. The device and the method have the beneficial effects that tri-axial strength measurement of the rock under the supercritical carbon dioxide condition is realized well; the device is convenient and feasible to refit, small in measurement errors, high in working efficiency and high in carbon dioxide utilization rate.

The invention discloses a test method of supercritical carbon dioxide content in coal. A determination device consisting of a vacuum pump, a coal sample tank, a carbon dioxide cylinder, a pressure device and a high-accuracy balance is used in the test method. The test method comprises the following steps of calculating the quantity of gas filled into an adsorption tank by measuring the mass variation of the adsorption tank, substracting the gas phase content increased in a free space of the adsorption tank to obtain the excess adsorption quantity of a coal sample under balance pressure, and calculating the gas phase carbon dioxide content in a coal pore by utilizing a non-ideal gas equation according to the pore pressure. The supercritical carbon dioxide content in coal is a sum of the excess adsorption quantity and the gas phase content of the pore space in coal, tests of a plurality of balance pressures can be finished by measuring carbon dioxide contents in the coal sample under different balance pressures. The test method has the advantages of simpleness and low requirement to an instrument and equipment, can accurately and conveniently measure the carbon dioxide content in coal and is beneficial to test research on the carbon dioxide content in coal.

The invention relates to a visual reaction kettle and a visualized experimental system and method for replacing natural gas hydrate. The reaction kettle used by the system comprises a barrel, a front flange, a rear flange and glass; the front flange, the rear flange and the barrel are each of a hollow structure, the glass is embedded on the hollow structure of the front flange and the hollow structure of the rear flange respectively, and the front flange, the rear flange and the glass are used for sealing the barrel; the barrel is provided with multiple connectors; the system comprises a sampling tank, a vacuum pump, a first natural gas bottle, a carbon dioxide gas bottle, a second natural gas bottle, an environmental climate case, a beaker, a sensor, an image acquisition device and a data acquiring and processing device. By means of the experimental system, the process of replacing the natural gas hydrate with carbon dioxide at different phase states can be carried out, macroscopic thermodynamic and dynamic data in the replacing process is obtained, and meanwhile the dynamic characteristics, the heat-fluid-solid coupling phenomenon and the hydrate form change in the replacing process are recorded; the visual reaction kettle and the visualized experimental system and method for replacing the natural gas hydrate can be used for observing the natural gas hydrate generation phenomenon.

The invention discloses a carbonated-water preparation equipment which comprises a compressor, a dryer, a capillary pipe, a refrigerating pipe, a radiator, a fan, a carbon dioxide gas cylinder and a cold container. The refrigerating tube is arranged inside the cold container, a water inlet pipe, a cold water pipe and a cold water outlet are sequentially connected, the cold water pipe is arranged inside the cold container, and the cold water outlet pipe is provided with a cold-water electromagnetic valve; the cold-water outlet pipe is connected with a cold water return pipe communicated with the inside of the cold container, a pipeline of the cold water return pipe is provided with a water pump, a water spray nozzle is arranged in the water outlet end of the cold water return pipe, and a water baffle plate is arranged at the position, opposite to the water spray nozzle, inside the cold container; the carbonated-water preparation equipment further comprises a carbonated water outlet pipe communicated with the inside of the cold container and is provided with a carbonated water electromagnetic valve; a temperature sensor, a high-water-level electrode and a low-water-level electrode are arranged inside the cold container. By the arrangement, solubility and solution speed of carbon dioxide in water can be greatly increased, intelligent control can be realized by the arrangement of a sensor device, and safe and reliable use of the equipment can be achieved.

A vest to be worn by a driver / passenger of a two-wheeled vehicle or the like provided with a plurality of air chambers which are folded and housed wherein the air chambers instantaneously expand in two stages by being filled with carbon dioxide gas injected through a carbon dioxide gas cylinder connected to the activating device, creating a buffer effect to cushion the impact on the driver / passenger, who is thrown out onto a road surface, a construction on the road, a wall surface, or the like, which is a circumstance typical to traffic accident disasters of two-wheeled vehicles or the like.

Hot water (12) in a bath (11) is pumped up by a suction pump (9) and introduced into a carbon dioxide gas dissolver (7) through solution flow rate adjusting means (14) and then, poured into the bath (11). Carbon dioxide gas supplied from a carbon dioxide gas cylinder (1) is introduced into the carbon dioxide gas dissolver (7) through gas flow rate adjusting means (5). At this time, the quantity of bubbles existing in artificial carbonated spring in a take-out pipe (15) is measured with a measuring device (13), and the solution flow rate adjusting means (14), gas flow rate adjusting means (5) and the like are controlled by means of a control device (16) using a relational expression between a preliminarily set quantity of bubbles and carbon dioxide concentration to obtain a desired concentration of carbon dioxide gas in carbonated spring. Because the carbon dioxide gas flow control means (5) is provided between the carbon dioxide gas dissolver (7) and a carbon dioxide gas supply source, carbonated spring of a high concentration can be always manufactured even if the pressure of supplied carbon dioxide gas changes or the permeating performance of a membrane changes.

The invention relates to an apparatus used for measuring the diffusion coefficient of carbon dioxide in rock. The apparatus comprises an apparatus housing. A gas tank, a diffusion cylinder and a fluid tank are arranged vertically in parallel in the apparatus housing. A gas pipeline and a liquid pipeline are arranged outside the apparatus housing. The inlet of the gas pipeline is connected to a carbon dioxide cylinder through a booster pump. A four-way valve is arranged in series on the gas pipeline. The gas outlets of the four-way valve are respectively connected to the four-way valve, the gas tank, and a pressure sensor. The inlet of the liquid pipeline is connected with a sample tank. A four-way valve is arranged in series on the liquid pipeline. The liquid outlets of the four-way valve are respectively connected to the four-way valve, the fluid tank, and a pressure sensor. According to the invention, a gas chamber is eliminated fundamentally, and the influence caused by sampling upon the gas pressure is eliminated. Vacuum pumping, saturated formation fluid and the determination of gas diffusion coefficient are integrated. Therefore, the influences on the saturated fluid in rock during the vacuum pumping process are completely eliminated.

The invention discloses a stretching stress testing machine used in a high-temperature and high-pressure hydrogen environment. The stretching stress testing machine used in the high-temperature and high-pressure hydrogen environment comprises a safety room, a stretcher, a high-temperature autoclave system and a gas supply and exhaust system, wherein the safety room comprises an airtight safety isolation room; a gas inlet and a gas exhaust port are formed in the safety isolation room; a carbon dioxide gas cylinder group is connected with the gas inlet of the safety isolation room; the high-temperature autoclave system is arranged in the safety isolation room and comprises a high-temperature autoclave placed in a heating furnace; a stretching rod inlet, a nitrogen inlet, a hydrogen inlet and a gas exhaust port are formed in the high-temperature autoclave; the gas supply and exhaust system comprises a nitrogen inlet pipeline, a hydrogen inlet pipeline, a gas exhaust pipeline and a safety pipeline. Through the safety isolation room and a flame arrester and by a high-temperature thermal starting and stopping experiment process, the circumstance that high-temperature hydrogen leaks and is in contact with air is prevented, and the possible circumstance of serious hydrogen embrittlement of an autoclave body material in a normal and low temperature region at the temperature of 220 DEG C or below is avoided, so that the purposes of accurate testing, safe testing, operation convenience and long service life of equipment are achieved.

The invention discloses a high-flame-retardant fireproof cooling distribution box which comprises an inner box body and an inner box door. The lower end of the inner box body is provided with a base, the outer side of the inner box body is covered by an outer shell inserted in the base, an oxygen discharge hose penetrates through the outer shell and is inserted in the upper end of the inner box body, a carbon dioxide intake hose penetrates through the outer shell and is inserted in one side of the lower end of the inner box body, and the outer end of the carbon dioxide intake hose is connected with a carbon dioxide gas cylinder; the oxygen discharge hose and the carbon dioxide intake hose are provided with a first magnetic valve and a second magnetic valve respectively; the top end in the inner box body is provided with a carbon dioxide detector; the carbon dioxide detector, the first magnetic valve and the second magnetic valve are all connected through the same controller. The high-flame-retardant fireproof cooling distribution box is novel in structure, the flame retardant ability and the flame resistant ability of the distribution box are enhanced, so that devices in the distribution box can be effectively protected, the damage to the devices in the distribution box due to outside fire is avoided, losses are reduced, and meanwhile maintenance cost is reduced.

The invention belongs to the field of petroleum engineering, and concretely relates to an experiment apparatus for measuring the permeability of a low permeation rock core, and a method thereof. The apparatus for measuring the permeability of the low permeation rock core comprises an inlet end pressure cap, an outlet end pressure cap, a curing glue sleeve, a carbon oxide gas bottle, a glass funnel, a first scale, a vacuum pump, a polyfluortetraethylene pipe and a second scale, and three ports of a first tee joint are respectively connected with the outlet of the inlet end pressure cap, the carbon dioxide gas bottle and the glass funnel through pipelines and valves; the glass funnel is vertically arranged, and one side of the glass funnel is vertically provided with the first scale; and three ports of a second tee joint are respectively connected with the outlet of the outlet end pressure cap, the vacuum pump and the polyfluortetraethylene pipe through pipelines and valves, the polyfluortetraethylene pipe is horizontally fixed, the polyfluortetraethylene pipe, a tested rock core and the axis of the first tee joint are in a same horizontal line, and one side of the polyfluortetraethylene pipe is provided with the second scale in a parallel manner. The experiment apparatus for measuring the permeability of the low permeation rock core has the advantages of small dead volume and high metering precision.

A refrigerator is disclosed. The refrigerator includes a body, a storage chamber defined in the body while having an opened front side, a door to open or close the opened front side of the storage chamber, a water tank to store clean water, a carbonated water production module mounted to a back surface of the door, the carbonated water production module including a carbon dioxide gas cylinder stored with carbon dioxide gas, a carbonated water tank to produce carbonated water through mixing of the clean water with the carbon dioxide gas, and a module support to support a bottom of the carbonated water tank, and a water leakage sensor disposed on the module support, to sense water leakage occurring at the carbonated water production module. Through this configuration, it is possible to sense water leakage, and thus to minimize damage caused by water leakage.

A refrigerator is disclosed. The refrigerator includes a body, a storage chamber defined in the body while having an opened front side, a door to open or close the opened front side of the storage chamber, a water tank to store clean water, a carbonated water production module mounted to a back surface of the door, the carbonated water production module including a carbon dioxide gas cylinder stored with carbon dioxide gas, a carbonated water tank to produce carbonated water through mixing of the clean water with the carbon dioxide gas, and a gas regulator to adjust a pressure of the carbon dioxide gas flowing from the carbon dioxide gas cylinder to the carbonated water tank, and a safety device to selectively move the carbon dioxide gas cylinder toward or away from the gas regulator, thereby coupling or separating the carbon dioxide gas cylinder to or from the gas regulator.

The invention discloses a linkage fire fighting system for an energy storage container. An inner cavity of the container is provided with a fire disaster monitoring system, a fire disaster alarming system and a fire extinguishing disposal system. According to the fire disaster monitoring system, a stereoscopic monitoring system of three signal sources is composed of a smog alarming device, a camera shooting monitor and a temperature monitor. An emergency lamp and a sound and light alarming device arranged for the fire disaster alarming system are directly controlled by the smog alarming device, and a sound and light alarm is given out immediately when a fire disaster happens. The fire extinguishing disposal system is composed of a fire extinguishing sprayer, a carbon dioxide gas bottle, anitrogen gas bottle, an exhaust fan, a manual emergency switch, a mechanical louver, a fire disaster alarming controller, a flow signal meter and a PCS controller; and the linkage fire fighting systemcan perform full-automatic fire extinguishing and remote control fire extinguishing, can also manually control fire extinguishing, and practically achieves fixed point fire extinguishing, in-time fire extinguishing and efficient fire extinguishing.

The invention discloses a shock-resistant and flame-retardant independent type low-temperature power distribution cabinet which comprises a cabinet body, a cabinet door and supporting plates, wherein a travel switch is connected into the cabinet body; a movable rod of the travel switch is connected with the cabinet door; a plurality of groups of shock absorption devices are arranged in the cabinet body; a temperature sensor is arranged at the lower end in the cabinet body; a smoke fog sensor is arranged at the upper end of the cabinet body; a control device is arranged on the right side wall in the cabinet body; a gas bottle slot is formed in the upper right end of the cabinet body; a gas bottle chuck is arranged at the left end in the gas bottle slot, and is connected with a steel pipe horizontally arranged in the cabinet body; the lower end of the steel pipe is connected with a plurality of spraying nozzles; and an electromagnetic valve is further arranged on the steel pipe. By the arrangement of the shock absorption device, the shock-resistant and flame-retardant independent type low-temperature power distribution cabinet can buffer force in any direction and absorb shock so as to supply complete shock absorption protection; a carbon dioxide gas bottle is mounted in the gas bottle slot; one bottle has two purposes of cooling and fire extinguishing, and can be automatically opened, so that the labor is saved, and the efficiency is realized; and the travel switch locks the electromagnetic valve to enable the electromagnetic valve to not be opened when the cabinet door is opened, so that personnel can be prevented from being frostbitten, and the shock-resistant and flame-retardant independent type low-temperature power distribution cabinet is high in safety.

The invention provides a crane box girder three-degree-of-freedom movable welding robot and belongs to the technical field of robot welding. The welding robot comprises a base, a longitudinal moving mechanism, a welding gun lifting mechanism, a welding gun rotating mechanism, a welding device, a cable drum and the like. The welding device comprises a wire feeder, a welding machine, a gas cylinder base and a carbon dioxide gas cylinder. The welding gun rotating mechanism is installed on the welding gun lifting mechanism through a lifting table. A gear and rack driver is matched with a linear guide rail pair to achieve precise positioning of long-displacement movement. The position and the posture of the welding gun are controlled through three servo motors together to achieve automatic welding of long-distance planar curve continuous smooth flat fillet seams. The welding robot has the technical characteristics of being simple in structure, short in transmission chain, precise in position, reliable in work, stable in welding quality and the like.

The invention discloses an infrared detection device and method for C4F7N concentration and discharging micro components. The infrared detection device for the C4F7N concentration and the dischargingmicro components comprises a fourier transform infrared spectrometer and a waste gas bottle, the waste gas bottle is connected with a vacuum pump, the vacuum pump is connected with a second switch valve, the fourier transform infrared spectrometer is connected to the end, away from the vacuum pump, of the second switch valve, and the other end of the fourier transform infrared spectrometer is connected with a PC machine. A pressure sensor is connected to the end, close to the second switch valve, of the fourier transform infrared spectrometer, the pressure sensor is connected with a first switch valve, and a gas-collecting bag is connected to the end, away from the pressure sensor, of the first switch valve. A gas distribution meter is connected to the end, away from the first switch valve, of the gas-collecting bag, the gas distribution meter is separately connected with a C4F7N gas bottle, and a carbon dioxide gas bottle and a component gas bottle, the fourier transform infrared spectrometer comprises a long optical path gas pool capable of effectively detecting the concentration and the components, and qualitative analysis can be carried out on the C4F7N discharging micro components accurately.

The invention provides a beer refreshing intelligentized control device, and relates to the field of refreshing and storage of beer, in particular to an intelligentized temperature-control and pressure-regulating device of a beer refreshing container. The periphery of a beer container is provided with an intelligence control system which comprises a central processing unit, signal acquisition and conversion equipment, an entry and display device, a control module and a power supply, wherein the signal acquisition and conversion equipment is composed of a temperature sensor and a pressure sensor; the entry and display device is composed of a keyboard and a displayer; the control module is composed of a compressor driving module and a solenoid valve driving module; the central processing unit receives the signal values acquired by the temperature sensor and the pressure sensor and compares with the set values, controls the start or stop of a compressor by the compressor driving module, controls the start or stop of an electromagnetic reducing valve on a carbon dioxide gas cylinder by the solenoid valve driving module, can keep the stable temperature and pressure in the beer container for a long time, and has the positive effects of high automation and reliable and stable refreshing control.

Hot water (12) in a bath (11) is pumped up by a suction pump (9) and introduced into a carbon dioxide gas dissolver (7) through solution flow rate adjusting means (14) and then, poured into the bath (11). Carbon dioxide gas supplied from a carbon dioxide gas cylinder (1) is introduced into the carbon dioxide gas dissolver (7) through gas flow rate adjusting means (5). At this time, the quantity of bubbles existing in artificial carbonated spring in a take-out pipe (15) is measured with a measuring device (13), and the solution flow rate adjusting means (14), gas flow rate adjusting means (5) and the like are controlled by means of a control device (16) using a relational expression between a preliminarily set quantity of bubbles and carbon dioxide concentration to obtain a desired concentration of carbon dioxide gas in carbonated spring. Because the carbon dioxide gas flow control means (5) is provided between the carbon dioxide gas dissolver (7) and a carbon dioxide gas supply source, carbonated spring of a high concentration can be always manufactured even if the pressure of supplied carbon dioxide gas changes or the permeating performance of a membrane changes.

The invention relates to supercritical carbon dioxide experimental equipment, which comprises a carbon dioxide gas cylinder, a cold trap, a high-pressure metering pump, a gas inlet micrometering valve and a high-pressure container, wherein a gas inlet tube, a thermoelectric couple sleeve and a discharge tube penetrate through a top cover of the high-pressure container; a polytetrafluoroethylene magnetic force stirrer is arranged at the bottom of the high-pressure container, and a magnetic force stirring controller is arranged on the outer part below the high-pressure container; and the high-pressure container is arranged in a constant temperature cavity of a constant temperature device. In addition, the output end of the discharge tube is communicated to a material collector by a discharge micrometering valve. The supercritical carbon dioxide experimental equipment is suitable for a supercritical carbon dioxide extraction technology, chemical reaction in supercritical carbon dioxide, the purification of crude products in the supercritical carbon dioxide, and the measurement of phase equilibrium and melting points of solutes in the supercritical carbon dioxide. The supercritical carbon dioxide experimental equipment has the characteristic of simple structure, and is suitable for multiple supercritical carbon dioxide experiments.

The invention provides a pipeline leakage diffusion simulation experimental table for an underground utility tunnel model pipeline, comprising: a tunnel model pipeline. The upper portion of one end ofthe tunnel model pipeline is provided with an intake well, the intake well is communicated with a carbon dioxide cylinder, the tail end of the tunnel model pipeline is provided with an exhaust well,the exhaust well discharges carbon dioxide gas from the tunnel model pipeline into outdoor air, a leak hole is drilled in the middle bottom of the tunnel model pipeline, a leak point needle is inserted into the leak hole, the leak point needle is connected with a nitrogen cylinder through a gas pipe and an electromagnetic valve, the side of the tunnel model pipeline is provided with a plurality ofgas sampling holes, and gas sampling devices are fixed to a front longitudinal member of the tunnel model pipeline through screws and are inserted into the gas sampling holes to sample gas in the gassampling holes. The pipeline leakage diffusion simulation experimental table for the underground utility tunnel model pipeline can simulate pipeline leakage in the underground utility tunnel model pipeline, and leaking gas is automatically sampled via the gas sampling devices.

The invention provides an operating device for anaesthetizing active insects. The device comprises a carbon dioxide cylinder (6), an operating table (2) and a pressure gun (4), wherein the operating table (2) and the pressure gun (4) are connected with the carbon dioxide cylinder (6) respectively. The operating device for anaesthetizing the active insects of the invention utilizes the principle that stigmas of a majority of insects are temporarily closed to in an anaesthetized and unconscious state in a high-concentration carbon oxide environment for the convenient observation or technical operation of the active insects; and the anaesthetized insects may revive naturally when moved to an environment without carbon oxide. The operating device has the advantages of avoiding the damage to the interior of an insect body and the adverse impact on a human body possibly caused by using the conventional ether for anaesthetizing the active insects and reducing indoor noxious solvent contamination.

The invention provides a terahertz wave vertical exposure system for cell experiment. The system comprises a terahertz wave source, a convergent lens, a lifting table, an incubator, a gas change box and a carbon dioxide gas cylinder; a light-emitting opening of the terahertz wave source is upwardly placed; the convergent lens is arranged above the light-emitting opening; the lifting table is erected above the convergent lens, and a first through hole is formed in a table surface of the lifting table; the incubator is arranged on the lifting table, a second through hole is formed on a bottom wall, and a gas change inlet and a gas change outlet are formed in a sidewall; an exhaust fan is arranged in the incubator; an ultraviolet disinfection lamp is arranged in the gas change box, a gas inlet on the sidewall of the gas change box is connected with the gas change outlet, and a gas outlet is connected with the gas change inlet; the carbon dioxide gas cylinder is connected with the gas change box; the medial axes of the light-emitting opening of the terahertz wave source, the convergent lens, the first through hole and the second through hole are coincident. The exposure system disclosed by the invention has the advantages of being stable in terahertz wave, short in optical path, and low in attenuation, and the repeatability and the precision of the exposure experiment can be obviously improved.

The invention provides a supercritical-fluid-based 3D electrodeposition machining device and method. The device comprises a carbon dioxide gas bottle, a high-pressure pump, a digital controller, a reactor, a moving anode assembly, a moving cathode assembly, a direct-current power supply and a cathode matrix serving as a machined part, wherein the reactor is internally provided with a mechanical stirrer; the moving anode assembly comprises a Z-directional linear motor, a driving lead screw, an anode connecting rod and a moving anode; the moving cathode assembly comprises an X-directional linear motor, a Y-directional linear motor, a guide rail, a moving block and a fixture; and when the supercritical-fluid-based 3D electrodeposition machining device is used, the moving anode and the cathode matrix are respectively and electrically connected with the anode and cathode of the direct-current power supply. The machining method mainly comprises the steps of carrying out chemical plating treatment on the cathode matrix in advance; mounting the cathode matrix; preparing a supercritical fluid; carrying out electrodeposition machining and after-treatment and the like. By using the supercritical-fluid-based 3D electrodeposition machining device and method, the electrodeposition speed can be effectively increased, the deposition quality can be improved, a complex and precise metal part can be prepared through electrodeposition in a three-dimensional space, and the application field of an electrodeposition technology is widened.