922 results about "Dry ice" patented technology

The invention relates to the technical field of nuclear facility decontamination, and provides a multiphase carbon dioxide decontamination recovery system and a decontamination recovery process, the decontamination recovery system comprises a dry ice supply loop, a high pressure CO2 supply loop, a decontamination loop and a CO2 recovery loop; the tail ends of the dry ice supply loop and the high-pressure CO2 supply loop are communicated with the decontamination loop; the tail end of the decontamination loop is communicated with the CO2 recovery loop; the decontamination recovery process comprises the following steps: taking ethanol or acetone as an entrainer, dissolving a decontaminating agent by using supercritical carbon dioxide to carry out soaking decontamination pretreatment on the radioactive contamination surface, taking high-pressure carbon dioxide as power, carrying dry ice particles and spraying out from a high-pressure spraying pipe to impact the radioactive contamination surface, and recycling the radioactive contamination surface. Recycling of carbon dioxide is realized through two-stage depressurization separation and first-stage filtration; the carbon dioxide radioactive decontamination capability and efficiency can be remarkably improved, the secondary waste generation amount is reduced, and the personnel irradiation risk is reduced.

The invention relates to the field of PCBA (printed circuit board assembly) surface cleaning, in particular to online cleaning equipment suitable for precision devices. The spray head driving mechanism is mounted on the rack; one end of the ice crushing pipeline is communicated with the first inlet of the cleaning nozzle, and the side part is connected with a dry ice pipeline communicated with the interior; the rotating grinding head is arranged in the ice crushing pipeline, a rotating shaft of the rotating grinding head is eccentric to the ice crushing pipeline, and the joint of the dry ice pipeline and the ice crushing pipeline is located on the side, away from the cleaning nozzle, of the rotating grinding head; and the output end of the rotary driving mechanism is connected with the rotary grinding head. According to the online cleaning equipment suitable for the precision device, the problem that an existing dry ice cleaning method applied to the PCBA cannot quickly, effectively and meticulously clean the surface of the PCBA can be solved, the advantages of dry ice particles with different sizes can be integrated, and the surface of the PCBA can be quickly, effectively and meticulously cleaned.

The utility model discloses a heater with a cleaning device, the heater is provided with a heating pipe, the cleaning device comprises a dry ice spraying device, the spraying opening of the dry ice spraying device faces the heating pipe, and the dry ice spraying device is used for spraying dry ice to the heating pipe; the output end of the ultrasonic device faces the heating pipe, and the output end of the ultrasonic device transmits ultrasonic waves into the dry ice medium sprayed by the dry ice spraying device. According to the utility model, stains are cleaned in a manner of spraying dry ice and superposing ultrasonic waves, the dry ice can effectively remove oil stains and impurities at low temperature, chemical solvents are not needed, the environment is not polluted, residues are not generated after sublimation, and the cleanliness of the heater is ensured; and high-frequency vibration of the ultrasonic waves can not only vibrate out stains in gaps of the heater, but also promote the reaction between the dry ice and the stains, so that the cleaning effect of the cleaning device is further improved.

The utility model relates to the technical field of photovoltaic module production, in particular to a photovoltaic module frame cleaning device. The device comprises a rack, a cleaning platform and at least one dry ice cleaning mechanism, wherein the cleaning platform and the at least one dry ice cleaning mechanism are mounted on the rack; the cleaning platform is used for bearing a photovoltaic module; each dry ice cleaning mechanism comprises a dry ice storage container, a nozzle and a pipeline connected between the dry ice storage container and the nozzle; and the nozzle is used for spraying dry ice to the photovoltaic module on the cleaning platform. According to the cleaning device provided by the invention, the excessive glue on the frame of the photovoltaic module is rapidly stripped through the gas formed by evaporation of the dry ice, so that the cleanliness of the photovoltaic module is ensured, and the effects of saving labor and improving the cleaning efficiency are achieved; meanwhile, water or a chemical solvent does not need to be used in the cleaning process, consumption of water resources is reduced fundamentally, and pollution of harmful chemical substances to the environment is avoided; in addition, a non-contact cleaning method is adopted, so that the photovoltaic module is prevented from being scratched or damaged.

The invention discloses an intelligent laser-dry ice composite cleaning method and device, belongs to the field of stain cleaning, and aims to solve the problem that the cleaning effect on large-thickness stains is not ideal in the prior art. The method comprises the following steps: performing visual scanning on a to-be-cleaned workpiece, obtaining surface stain thickness distribution of the to-be-cleaned workpiece through three-dimensional surface topography reconstruction, and dividing the surface of the to-be-cleaned workpiece into a plurality of sub-regions according to the stain thickness; the sub-regions comprise three types: an ultra-thin sub-region, a medium-thickness sub-region and a large-thickness sub-region; performing cleaning path planning to form three cleaning paths; the cleaning process of the ultra-thin sub-region cleaning path comprises the following steps: laser cleaning; the cleaning process of the medium-thickness sub-region cleaning path is laser-dry ice composite cleaning; the cleaning process of the large-thickness subarea cleaning path is laser-dry ice composite cleaning. The cleaning device comprises a ground rail gantry movement system, a first mechanical arm, a second mechanical arm, a dry ice cleaning system, a visual recognition system and a pulse laser cleaning system.

A thermocarrier box includes an outer shell and insulated panels coupled to a bottom wall of the outer shell and to side walls of the outer shell. The thermocarrier box includes an inner box positioned within the outer shell such that a bottom wall of the inner box and side walls of the inner box are each coupled to one of the insulated panels. Another insulated panel is positioned over the inner box. A lid is positioned over the another insulated panel such that the another insulated panel is positioned between the lid and the inner box. Methods of assembly are provided.

The invention provides an anti-sticking roller self-cleaning pole piece pressing device for lithium battery production, which comprises a supporting plate and two groups of supporting rods symmetrically arranged on the top surface of the supporting plate, an operation part is arranged between the two groups of supporting rods, a plurality of groups of vertically parallel pressing roller pieces are arranged in the operation part, the two ends of the pressing roller pieces are connected with the supporting rods, and one group of pressing roller pieces is connected with the supporting rods in a sliding manner. A driver for driving the support rod to move and rotate is arranged on one side of the support rod; cleaning parts are arranged on the two sides of the supporting plate, an operation part is located between the cleaning parts, a cleaning assembly comprising a mounting frame and two sets of scrapers is arranged in each cleaning part, the scrapers scrape and press roller impurities, the mounting frames are connected with the supporting rods through lead screw structures, and the scrapers are mounted in the frames and make contact with the rollers; and a dry ice spraying part for spraying dry ice particles to the compression roller piece is also arranged in the group of cleaning parts. The device realizes self-cleaning of the compression roller piece through the cleaning assembly and the dry ice spraying part, solves the problems that a traditional device depends on manual cleaning, is low in efficiency and is easy to damage the compression roller, and guarantees the production quality and efficiency of the lithium battery pole piece.

The utility model relates to the technical field of cold energy recovery equipment, and provides an anti-leakage cold energy recovery device for dry ice production tail gas, which comprises a dry ice production box, a recovery assembly is arranged on one side of the dry ice production box, and the recovery assembly comprises a recovery box, a recovery cavity, a communicating pipe, a flow guide pipe, a turbulent flow structure and a steering pipe. According to the utility model, the turbulent flow structure is arranged, the tail gas produced by dry ice enters the flow guide pipe through the gas inlet pipe, the steering pipe and the communicating pipe, and the connecting plate divides the cavity in the flow guide pipe into two parts, so that the tail gas in the flow guide pipe can be shunted; the split tail gas is blocked through a first turbulent flow block and a second turbulent flow block, so that the passing speed of the tail gas in the flow guide pipe is slowed down, the retention time of the tail gas in the flow guide pipe is prolonged, sufficient heat exchange of the tail gas is guaranteed, cold energy is recycled, and the function of prolonging the heat exchange time of the tail gas is achieved; and the recovery efficiency of the cold energy recovery device in use is improved.

The invention belongs to the technical field of ceramic ring cleaning, and particularly discloses an automatic cleaning device and method for a piezoelectric ceramic ring of an underwater acoustic transducer. A first mover module and a second mover module are arranged on the portal frame structure, the first mover module is used for driving the second mover module to do horizontal reciprocating motion along the cross beam, and the second mover module is used for adjusting the height of the spray gun; and a third rotor module is arranged at the bottom of the portal frame structure, a ceramic ring mounting jig is arranged on the third rotor module, and the third rotor module is used for driving the ceramic ring mounting jig to move front and back. Horizontal displacement of the spray gun is achieved through the first mover module, vertical displacement of the spray gun is achieved through the second mover module, front-back movement of the ceramic ring mounting jig is achieved through the third mover module, it is guaranteed that the position of the spray gun can be accurately aligned with each ceramic ring, and high-efficiency, high-quality and high-consistency automatic cleaning of the ceramic rings is achieved.

The invention relates to the technical field of dry ice cleaning, and discloses storage type dry ice cleaning equipment and a using method of the storage type dry ice cleaning equipment. The storage type dry ice cleaning equipment comprises a storage unit, a carrying unit and a cleaning unit. The storage unit stores multiple pieces of dry ice, the cleaning unit is used for cleaning a surface to be cleaned, the carrying unit comprises a translation mechanism and a carrying mechanism, the carrying mechanism is arranged on the translation mechanism and comprises a moving assembly and a clamping assembly, the moving assembly is connected with the clamping assembly, and the clamping assembly is used for clamping the dry ice. The moving assembly is used for driving the clamping assembly to move between a dry ice taking opening of the storage unit and an initial position and between the initial position and a dry ice feeding opening of the cleaning unit, and continuous automatic feeding and cleaning of multiple pieces of dry ice are achieved through cooperative operation of the storage unit, the carrying unit and the cleaning unit; and the influence of manual intermittent feeding on normal cleaning work is avoided.

The invention relates to the field of base material surface cleaning, in particular to a coupling cleaning spray head which comprises a shell. The dry ice channel is arranged in the shell, and one end of the dry ice channel is used for containing dry ice particles; the first plasma channel is arranged in the shell, and one end of the first plasma channel is used for introducing plasma; and the first nozzle is arranged on the shell and is communicated with the other end of the dry ice channel and the other end of the first plasma channel. The coupling cleaning spray head can solve the problems that an existing base material cleaning device cannot have the advantages of being suitable for precision devices sensitive to water or poor in sealing performance, not enabling a base material to generate a large temperature difference and being capable of efficiently cleaning pollutants of various layer thicknesses at the same time. The device has the advantages that the device is suitable for precision devices sensitive to water or poor in sealing performance, large temperature difference is not generated, and various pollutants with different thicknesses on the surface of a base material can be efficiently removed.

The invention relates to the technical field of dry ice bag boxing, in particular to an automatic dry ice bag boxing system which comprises a first support and a second support which are arranged in a T shape, and material box placing positions used for placing material boxes are arranged on the two sides of the second support. A chain plate conveying assembly is arranged on the first support, and a centering stacking assembly and a centering clamping assembly are arranged on the second support. The centering and stacking assembly is used for centering and stacking the pushed dry ice bags and is driven by a centering and stacking assembly translation mechanism to translate the dry ice bags to the centering and clamping assembly; the centering material clamping assembly is driven by the centering translation lifting mechanism to conduct centering clamping on the entering dry ice bags, the dry ice bags are driven by the centering material clamping assembly translation mechanism to enter the position adjacent to the material box, and the dry ice bag modules are sequentially stacked in the material box through driving of the centering translation lifting mechanism. The system is compact and simple in structure, does not occupy space, and can achieve centering pressing stacking and centering clamping of the dry ice bags to ensure subsequent accurate clamping and carrying of a robot.

The invention relates to a dry ice driven circulating cooling system and individual cooling clothes, comprising a heat exchange device provided with a storage cavity and a cooling cavity, the storage cavity and the cooling cavity being close to each other; the driving device comprises a driving device barrel, an extrusion piston, a sealing plug and an extrusion elastic piece, the extrusion piston is movably connected into the driving device barrel in a sealed mode and divides the driving device barrel into a driving cavity and an extrusion cavity, the driving cavity communicates with the storage cavity, the extrusion cavity communicates with the cooling cavity, and the driving cavity is provided with an exhaust port used for exhausting gas; the sealing plug is connected with the piston, and the extrusion elastic piece applies elastic force towards the side where the driving cavity is located to the extrusion piston and / or the sealing plug; the cooling pipe is communicated with the cooling cavity and the extrusion cavity; the dry ice is arranged in the storage cavity; and the cooling liquid circularly flows among the cooling cavity, the extrusion cavity and the cooling pipe. The dry ice is used as a cold source, frostbite caused by too tight contact between the dry ice and the human body is prevented, the use time is long, carrying is convenient, and no extra power device is needed.

The invention relates to the technical field of wafer cleaning, and discloses wafer cleaning equipment and a cleaning method. The wafer cleaning equipment comprises a cleaning chamber, a first cleaning assembly and a purging assembly, the cleaning chamber is suitable for containing wafers, and the first cleaning assembly communicates with the cleaning chamber through a first conveying pipeline and sprays dry ice and snow particles to the wafers in the cleaning chamber; the purging assembly comprises a first gas storage tank containing purging gas and a heating structure arranged in the first gas storage tank and used for heating the purging gas. The purging assembly is used for communicating with the first conveying pipeline and introducing heated purging gas into the cleaning cavity. The first cleaning assembly sprays dry ice and snow particles to the upper surface of the wafer in the cleaning cavity along the first conveying pipeline, and nanoscale particle pollutants on the surface of the wafer are physically removed; the purging assembly enables the heated purging gas to be introduced into the cleaning cavity along the first conveying pipeline, residual dry ice and snow particles are removed, blockage is prevented, meanwhile, the temperature of the cleaning cavity is adjusted through the heating gas, and subsequent wafer cleaning is guaranteed.

The invention provides a pipeline cleaning system which comprises a support unit, a cleaning agent spraying unit, a dry ice spraying unit and a high-pressure gas unit, a plurality of moving units are arranged on the support unit, and the moving units are suitable for moving in a pipeline; the cleaning agent spraying unit is arranged on the support unit and comprises a first feeding assembly and a plurality of first nozzles, and the first feeding assembly is connected with the first nozzles and is suitable for conveying a cleaning agent to the first nozzles; the dry ice spraying unit is arranged on the support unit and comprises a second feeding assembly and a plurality of second nozzles, and the second feeding assembly is connected with the second nozzles and suitable for conveying dry ice to the second nozzles; the high-pressure gas unit is arranged on the support unit and communicates with the cleaning agent spraying unit and the dry ice spraying unit so as to be suitable for conveying high-pressure gas. The cleaning method combining cleaning agent cleaning and dry ice cleaning is adopted, rapid stripping and deep removal of pollutants on the inner wall of the pipeline can be achieved, and the safety of the pipeline in the cleaning process is improved while the cleaning effect is improved.

The invention discloses capsule dry ice capable of automatically generating gas in situ. The capsule dry ice comprises a capsule and dry ice, wherein the capsule is composed of a plurality of parts and is internally provided with a cavity; wherein the dry ice is placed in the cavity. According to the in-situ gas self-generating capsule dry ice, the sublimation deflation time of the dry ice is prolonged, the liquid column density is reduced, the problem that liquid drainage is not smooth after a low-pressure gas well (or an oil well) is fractured or shaft accumulated liquid is rapidly drained out of a shaft accumulated liquid production well is solved, and the single-well yield is increased. In addition, the method does not need to intervene in any underground equipment, the dry ice is low in price and wide in source, and simple, economical and efficient oil and gas well liquid drainage is achieved.

The invention relates to the technical field of mechanical equipment, in particular to a dry ice cleaning machine which comprises a feeding mechanism, a cleaning mechanism, a discharging mechanism and a conveying line, the feeding mechanism and the discharging mechanism are arranged at the two ends of the conveying line in the X-axis direction, and the cleaning mechanism is arranged between the feeding mechanism and the discharging mechanism. Comprising a dry ice machine, a spraying assembly and a waste adsorption assembly, the spraying assembly and the waste adsorption assembly are oppositely arranged on the two sides of a conveying line in the Y-axis direction, so that the spraying assembly is used for spraying dry ice to blow off a to-be-removed part of a workpiece and enable the to-be-removed part to form waste, and the waste adsorption assembly is used for adsorbing the waste in a negative pressure suction mode. And particularly, for a welding tip of a pin of an electronic plug connector, the tip is removed through dry ice to realize cleaning of the workpiece, so that the phenomenon that the product performance is influenced due to breakage in the subsequent use process can be prevented, and the reliability of the product is improved.

The utility model relates to the technical field of deburring devices, and discloses a dry ice machine lens double-face deburring device which comprises a deburring bin and a rotating frame, the top end of the rotating frame is fixedly connected with an air cylinder, an output shaft of the air cylinder is fixedly sleeved with a beating rod, and the upper side and the lower side of an inner cavity of the rotating frame are fixedly connected with vibration springs. A clamping plate is fixedly connected to the side, away from the rotating frame, of the vibration spring, a guide rod is fixedly connected to the side, close to the vibration spring, of the clamping plate, a flow guide bin is fixedly connected to the bottom end of the deburring bin, and a collecting box is slidably connected to an inner cavity of the flow guide bin. And then the clamping plate drives the materials to vibrate, so that chippings on the surfaces of the materials are shaken off to an inner cavity of a flow guide bin and are collected to an inner cavity of a collecting box along the flow guide bin, vibration of the materials is achieved, and the situation that burrs are still adsorbed to the surfaces of the materials after being removed and cannot be rapidly removed is avoided.

The invention belongs to the technical field of laser-hollow cathode arc composite welding. The embodiment of the invention provides a laser-hollow cathode arc composite coaxial welding torch and a welding method. In order to solve the problem that the fusion depth cannot be continuously increased when the laser power is relatively high, the space between the hollow cathode and the welding workpiece is cooled through compressed gas, and in order to enhance the cooling effect, a dry ice coolant is further arranged at a cooling gas outlet through a second channel, so that the cooling effect is improved. A dry ice cooling agent is sprayed to the space between the hollow cathode and the welding workpiece by means of the pressure of compressed gas, and the space between the hollow cathode and the welding workpiece is further cooled or metal steam, air, inert gas, plasma and / or welding plumes are discharged in a manner of blowing or sucking air from the center of the hollow cathode; therefore, the influence of gas above the electric arc and high-temperature ionization of the gas on laser transmission is avoided, and a larger fusion depth is obtained.

The utility model discloses a multifunctional cleaning device which comprises a control table and a portal frame. The portal frame is arranged at one end of the console, one side of the top of the portal frame is cooperatively connected with a cleaning assembly, and the cleaning assembly comprises a plasma cleaning assembly or a dry ice cleaning assembly; a conveying module is arranged at the top of the console, a jig is connected to the top of the conveying module in a matched mode, and at least one workpiece is arranged on the jig; the cleaning assembly is used for cleaning the workpiece on the jig; workpieces on the jigs are controlled to move flexibly through the conveying module, the jigs are provided with the containing grooves and the adsorption holes in the jigs to fix the workpieces, meanwhile, the cleaning assemblies are controlled to accurately control the positions above the workpieces, the cleaning assemblies can be used for plasma cleaning or dry ice cleaning, and therefore multifunctional cleaning is achieved.

The invention provides a preparation method and application of a brain tissue rapid frozen section. The preparation method comprises the following steps: (1) embedding a pretreated frozen tissue sample into a pre-cooled OCT (Optical Coherence Tomography) for freeze drying; (2) transferring the freeze-dried tissue sample in the step (1) into an embedding box containing a pre-cooled OCT (Optical Coherence Tomography), and completely immersing the tissue sample into the OCT; (3) putting the embedding box in the step (2) into an embedding container containing precooled refrigerating fluid and dry ice; and immersing the embedding box into a refrigerating fluid, performing quick freezing, and slicing after quick freezing to obtain the brain tissue quick freezing section. The preparation method is short in time consumption, generation of ice crystals is remarkably reduced, the phenomenon of slice falling caused by bubbles in the embedding blocks in slices is effectively prevented, tissue frost cracking is avoided, and the slice quality is improved.

The utility model relates to the technical field of blasting equipment, in particular to a device for cracking and breaking rocks through solid dry ice phase change. According to the technical scheme, the device comprises a fracturing pipe, two-way air cylinders and an air guide pipe, a filler body is arranged in the fracturing pipe, a heat preservation cover is arranged in the fracturing pipe, the air guide pipe is arranged in the filler body, and the two-way air cylinders are arranged on the two sides of the outer wall of the upper end of the filler body. And the effect of fixing the fracturing pipe is achieved, the position stability of the fracturing pipe is guaranteed, and it is guaranteed that the fracturing pipe is convenient to fix.

The invention relates to the field of combustion product removal, in particular to a robot-based hearth dry ice type intelligent decoking method and system. The method comprises the steps of collecting a hearth image; segmenting the hearth image to obtain a coke unit; performing clustering processing on the coke units to obtain a multi-layer clustering result; taking each category in each layer of clustering result as a node, constructing an undirected graph, and obtaining a shortest path; and connecting the shortest paths obtained by clustering results of all layers to obtain a decoking path so as to realize decoking treatment. And the efficiency and the accuracy of obtaining the optimal decoking path are improved.

The invention provides a method for efficiently separating a photovoltaic module at low temperature based on a dry ice refrigerant, which comprises the following steps of: firstly, carrying out primary treatment including disassembly on the photovoltaic module to obtain an integral piece mainly formed by combining glass, a silicon wafer and a back plate, and then cutting the obtained integral piece to obtain a block piece to be separated, and the block-shaped piece to be separated is soaked in a dry ice refrigerant for 30-50 s, the temperature is kept at-45 DEG C to-50 DEG C in the soaking process, and after the time is up, the block-shaped piece to be separated is taken out, and back plate separation is achieved by applying external force. According to the invention, the backplane separation of the photovoltaic module can be realized in an extremely short time by using the dry ice refrigerant, and the separation efficiency is far higher than that of the existing separation means; and a contrast experiment finds that the supersaturated CO2 gas in the dry ice type refrigerant is remarkably beneficial to the separation efficiency and the separation effect of the back plate, a new way is provided for the photovoltaic module on the separation of the back plate, and the method can be used as a foundation for the development of a follow-up technology.

The invention discloses a device and method for cleaning the interior of a large complex sealing structure. The device comprises an ice conveying system, an oil conveying system and an environment control system. The oil conveying system is used for storing and conveying cleaning fuel oil, and the environmental control system is connected with the fuel oil system and connected into a device to be cleaned so as to form a closed cleaning system. The environment control system is further used for being connected into the ice conveying system, the ice conveying system conveys dry ice into the environment control system, the dry ice is mixed with cleaning fuel oil provided by the fuel oil system, and the dry ice and cleaning liquid are mixed and then conveyed to the device to be cleaned. A mixture of dry ice and cleaning liquid is periodically put into a to-be-cleaned device, an inlet and an outlet of the to-be-cleaned device are closed, cleaning fuel oil is driven by carbon dioxide gas generated by sublimation of the dry ice in the pressurization and decompression processes to generate vortex disturbance, and the interior of the to-be-cleaned device is cleaned. The problems that in the prior art, cleaning does not reach the standard, and efficiency is low are effectively solved.

The invention relates to the technical field of plant component extraction, in particular to supercritical extraction equipment for plant component extraction, which comprises an extraction mechanism, the device further comprises a sealing mechanism, a smashing mechanism and a crushing mechanism. Dry ice is crushed through the crushing mechanism to form dry ice particles, the dry ice particles are discharged into the crushing mechanism at a high speed through the crushing mechanism, spices in the dry ice particles are crushed, then the crushed spices are discharged into the extraction mechanism through the crushing mechanism, and the extraction mechanism is sealed through the sealing mechanism. Carbon dioxide gas is continuously discharged into the extraction mechanism through supercharging equipment, oil substances in the spices are dissolved in liquid carbon dioxide, the internal temperature of the extraction mechanism is adjusted through the extraction mechanism, the liquid carbon dioxide is in a supercritical state, and the oil substances in the spices are extracted by reducing the pressure in the extraction mechanism. The liquid carbon dioxide is gasified, and oil substances in the spices are left, so that the practicability of the equipment is improved.

The invention provides a stainless steel CO2 deep treatment high-brightness surface finishing process. The stainless steel CO2 deep treatment high-brightness surface finishing process comprises the following steps: a) adopting supercritical CO and a biological surfactant for synergistic degreasing; b) realizing transition from rough polishing to fine polishing through gradient dry ice spraying; c) performing pulse laser micro-melting repair under the protection of a CO air curtain; and d) generating the nanoscale CrO film by utilizing supercritical CO electrochemical passivation. Through the supercritical CO synergistic degreasing, gradient dry ice polishing and laser repairing processes, submicron surface finishing is achieved while the oxidation reaction is inhibited, and the method has the technical advantages that the machining efficiency is improved, the surface uniformity is enhanced, and the environmental load is reduced.

The utility model discloses a liquid air energy storage system coupled with air separation and dry ice preparation, which comprises an air compression liquefaction subsystem, a cold energy gradient utilization subsystem, an air expansion power generation subsystem and a heat storage subsystem, the air compression and liquefaction subsystem, the cold energy gradient utilization subsystem and the expansion power generation subsystem are sequentially connected through a compression and liquefaction pipeline and an expansion power generation pipeline, and the heat storage subsystem is connected with the air compression and liquefaction subsystem and the air expansion power generation subsystem through a heat storage circulation pipeline. The cold energy gradient utilization subsystem is arranged to replace an existing low-temperature cold storage unit, the liquid air energy storage system is coupled with the air separation unit and the dry ice preparation unit, liquid air cold energy gradient utilization is achieved, and meanwhile energy consumption and construction cost of the air separation system are reduced. The power generation stability of the liquid air energy storage system is guaranteed, and the comprehensive efficiency and the environmental protection property of the liquid air energy storage system are improved.

The invention discloses a frozen tissue block transfer box, and relates to the technical field of tissue sample embedding, the frozen tissue block transfer box comprises a box body, a lower containing cavity located in the box body, a storage disc embedded in the lower containing cavity, an upper containing cavity located in the box body, a dry ice storage area on one side of the storage disc, an ethanol storage area and an embedding treatment area on the other side of the storage disc, and a lower containing cavity located in the box body, the upper containing cavity is located above the lower containing cavity, a dry ice pushing channel with an opening in one end is arranged at the position, above the dry ice storage area, of one side of the upper containing cavity, the dry ice pushing channel communicates with the ethanol storage area through the opening, the dry ice pushing mechanism is movably installed in the dry ice pushing channel, and a channel cover plate is hinged to the top of the dry ice pushing channel. The multiple storage areas are arranged on the storage disc, cooling media can be managed in a partitioned mode, meanwhile, dry ice can be pushed to the ethyl alcohol storage areas through the dry ice pushing mechanism according to needs, the dry ice is mixed with ethyl alcohol to generate a more lasting low-temperature environment, and therefore temperature fluctuation is effectively reduced.

The invention relates to the technical field of welding, in particular to a weld joint quality detection system based on welding robot vision. Dry ice particles are stored in the dry ice storage device, and high-pressure gas generated by the gas compressor pushes the dry ice particles to be sprayed out of the spraying nozzle so as to clean a welding seam; the two steering engines are arranged on the two sides of the light source, two mirrors are installed on the two steering engines, and the steering engines drive the mirrors to rotate; and the data processing module is used for controlling the gas compressor to start to generate high-pressure gas before the weld seam image is acquired. The invention further relates to a welding robot vision-based welding seam quality detection method which is characterized by comprising the following steps: S1, the welding robot moves to a welding area to weld a to-be-welded position, so that the problem of inaccurate welding seam quality evaluation caused by the fact that a welding seam is blocked by slag can be solved.