627 results about "Gas cooling" patented technology

The invention relates to a deep coal underground gasification method which comprises the following steps: drilling a plurality of gasification wells in a land parcel, sequentially arranging the plurality of gasification wells into three rows from the edge of the land parcel, and fracturing a bottommost coal seam; the first row of gasification wells are injection wells, the second row of gasification wells are production wells, and the bottommost coal seam between the first row of gasification wells and the second row of gasification wells is gasified; when the gasification high-temperature area of the gasified coal seam is expanded to the front edge of the gas cooling area, the second gas gasification well is closed, the third gas gasification well serves as a production well, and the coal seam continues to be gasified; meanwhile, a fourth row of gasification wells are drilled; after the coal bed is gasified, the bottommost coal bed between the second row of gasification wells and the third row of gasification wells is gasified, and so on, the bottommost coal bed between all the rows of gasification wells is gasified; meanwhile, cement paste is injected into the first exhaust gasification well to fill the gasified goaf; and so on, filling the goaf between each row of gasification wells; sequentially gasifying and refilling each coal seam from bottom to top according to the method.

The invention relates to the technical field of biomass energy treatment, and particularly discloses a biomass gasification fuel gas conveying system which comprises a biomass gasification furnace and further comprises a cooling device arranged on a gas output pipeline of the biomass gasification furnace; the water cooling circulation mechanism is connected to the cooling device, and the guide waste discharge barrel is connected with an output pipeline of the biomass gasifier; the waste discharge barrel cleaning mechanism is arranged on the outer wall of the guide waste discharge barrel; the tar and dust removal mechanism is arranged above the guide waste discharge barrel, and the ammonia water supplement mechanism is connected to an input pipeline of the waste discharge barrel cleaning mechanism through the water cooling circulation mechanism; and the monitoring and purifying mechanism is arranged at the output end of the tar and dust removing mechanism. According to the invention, fuel gas cooling, tar and dust removal, equipment cleaning and maintenance and stable conveying are realized.

The invention provides low-temperature supersonic airflow collision ultramicro equipment, which belongs to the field of material crushing and processing, and comprises a feeding device, an airflow collision device, a closed-loop type circulation grading device, a material receiving device, a gas cooling device and a gas inlet device, and the gas inlet device is used for providing a high-pressure gas source for the equipment; the gas cooling device cools the high-pressure gas to a preset low temperature, and then the high-pressure gas is fed into the gas flow collision device after being subjected to pressure regulation through the gas feeding pipeline; the airflow collision device comprises a collision chamber and at least one pair of opposite nozzles, the horizontal distance between the paired nozzles can be adjusted, the air supply pipeline and the feeding pipeline are connected with the nozzles after being intersected, and high-pressure air is sprayed out through the nozzles to form supersonic jet flow to drive materials to collide with each other in the collision chamber. And the collided materials are subjected to closed-loop circulation classification and then enter a material receiving device, and large particles are subjected to circulation collision crushing again. The ultramicro equipment disclosed by the invention can be used for crushing various plant raw materials into 1-10 microns, and has a good application prospect.

The double-sided cooling capsule target chamber comprises a capsule target piece assembly, a bearing assembly, a target chamber head assembly and a target chamber tail assembly, and the capsule target piece assembly is circular; a groove part and a channel communicated with the groove part are formed in the bearing assembly, and a capsule target piece assembly is arranged in the groove part; a helium cooling channel and a water cooling channel are respectively arranged in the bearing component corresponding to the front surface and the back surface of the capsule target sheet component; the target chamber head assembly is fixed at one end of the bearing assembly, and the target chamber head assembly is provided with a leading-in part for leading an accelerator particle beam into the channel; the target chamber tail assembly is fixed to the other end of the bearing assembly. The double-face cooling effect of copper supporting face water cooling and aluminum supporting face gas cooling can be achieved on the capsule target piece assembly, and the use feasibility of target pieces made of different heat conduction performance materials is improved; the irradiation efficiency is improved, the manufacturing cost is reduced, and conveying and cooling are facilitated; and meanwhile, the treatment capacity of dissolution and separation of the irradiated target sheet can be reduced, and the post-treatment cost is reduced.

The invention relates to the technical field of oil gas recovery, and discloses a cold-carrying circulation heat recovery oil gas recovery system which comprises an oil gas cooling liquefaction recovery subsystem and a cold-carrying circulation heat recovery subsystem. The oil gas cooling, liquefying and recycling subsystem comprises a first-stage cooling module, a second-stage cooling module, a third-stage cooling module and a fourth-stage heating module which are sequentially communicated through oil gas connecting pipes; the secondary refrigerant circulation heat recovery subsystem comprises a first-stage oil gas condenser A, a first-stage oil gas condenser B, a first secondary refrigerant valve, a second secondary refrigerant valve, a third secondary refrigerant valve, a fourth secondary refrigerant valve, a fifth secondary refrigerant valve, a sixth secondary refrigerant valve, a secondary refrigerant pump and a fourth-stage oil gas heater. The cold-carrying circulation heat recovery oil gas recovery system has the advantages of being low in energy consumption, energy-saving, environment-friendly, simple in refrigerating system, low in cost, high in reliability and the like, and the energy-saving and environment-friendly performance, the cost performance and the operation reliability of the oil gas recovery system are greatly improved.

The invention relates to the technical field of lamp body cooling, in particular to a cooling structure for a lamp body, which comprises a front heat dissipation high light transmission assembly, a supply assembly and heat dissipation fins which are arranged on the lamp body in a covering manner, a containing cavity is formed in the front heat dissipation high-light-transmittance assembly and connected with the supply assembly through a pipeline, liquid or gas cooling media can flow through the containing cavity, and the front heat dissipation high-light-transmittance assembly is provided with a temperature sensor. And a cavity for mounting the lamp body is defined by the radiating fins and the side cover plates. The high-power portable lamp can effectively solve the problem of burn caused by skin contact or approaching due to too high temperature, can also avoid the problem that the service life of the lamp is shortened or damaged due to too high temperature rise, and realizes cooperative work of efficient active cooling and passive heat dissipation.

The invention relates to the technical field of flue gas treatment, in particular to a gas rising cap assembly, a gas cooling tower and a flue gas purification system. The gas rising cap assembly comprises a plurality of gas rising cap units, the gas rising cap units are arranged in parallel at intervals, and each gas rising cap unit comprises a guide cylinder and a first gas rising cap; the guide cylinder is used for guiding gas to rise for cooling; the first gas rising cap is arranged above the guide cylinder and at least covers the upper part of the guide cylinder; in the axial direction of the guide cylinder, a gap through which gas in the guide cylinder overflows is formed between the first gas rising cap and the upper part of the guide cylinder; at least part of the adjacent gas rising cap units share one first gas rising cap, and an opening is formed in the shared first gas rising cap and located between the upper portions of the adjacent guide cylinders; according to the gas lifting cap assembly, the gas-liquid separation efficiency can be improved, and the problem of low-load liquid leakage can be avoided or reduced.

The invention relates to the technical field of oil gas recovery, and discloses a variable-flow-direction cold-carrying circulation oil gas recovery system which comprises a variable-flow-direction oil gas cooling liquefaction recovery subsystem and a cold-carrying circulation heat recovery subsystem. The variable-flow-direction oil gas cooling, liquefying and recycling subsystem comprises a first-stage cooling module, a second-stage cooling module, a third-stage cooling module and a fourth-stage heating module which are sequentially communicated through oil gas connecting pipes; the secondary refrigerant circulation heat recovery subsystem comprises a first-stage oil gas condenser A, a first-stage oil gas condenser B, a first secondary refrigerant valve, a second secondary refrigerant valve, a secondary refrigerant pump, a fourth-stage oil gas heater, a third secondary refrigerant valve and a fourth secondary refrigerant valve. The flow-direction-variable cold-carrying circulation oil gas recovery system has the advantages of being low in energy consumption, energy-saving, environment-friendly, simple in refrigerating system, low in cost, high in reliability and the like, and the energy-saving and environment-friendly performance, the cost performance and the operation reliability of the oil gas recovery system are greatly improved.

The invention provides a pipeline gas cooling sleeve device and a using method, and belongs to the technical field of pipeline gas cooling, the pipeline gas cooling sleeve device comprises an upper shell and a lower shell, the upper shell and the lower shell are arranged on the outer side of a gas outlet pipeline in a sleeving mode, a cooling cavity is formed between the upper shell and the lower shell, and a cold water inlet pipe and a cold water outlet pipe are arranged at the top of the upper shell; the cold water inlet pipe and the cold water outlet pipe are both communicated with the cooling cavity; a plurality of buckle assemblies are arranged on the two sides of the upper shell, locking assemblies are arranged on the two sides of the lower shell, the upper shell and the lower shell are connected through the buckle assemblies and the locking assemblies, and a sealing assembly is arranged between the upper shell and the lower shell. Stable connection of the cooling sleeve can be achieved, looseness caused by vibration or thermal deformation is avoided, and meanwhile the sealing performance of the cooling sleeve is guaranteed.

The invention discloses an integrated tower-shaped hydrogen production gas-liquid treatment device and method, the integrated tower-shaped hydrogen production gas-liquid treatment device comprises a wave stabilizing section, an electrolyte cooling section, a gas-liquid separation section, a gas washing section, a gas cooling section and a fog drop separation section which are sequentially communicated from bottom to top, the wave stabilizing section is internally provided with a wave stabilizing device, and the bottom of the wave stabilizing section is provided with an electrolyte outlet; a first tubular heat exchanger is arranged in the electrolyte cooling section, a first cooling medium inlet and a first cooling medium outlet are formed in the side face of the electrolyte cooling section, a dispersing disc and a gas rising device are arranged in the gas-liquid separation section, a tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, trapping filler is arranged in the fog drop separation section, and a gas exhaust port is formed in the top of the fog drop separation section. The tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, a gas-liquid mixture enters the gas-liquid separation section in the tangential direction, gas and electrolyte are separated by means of different centrifugal forces borne by gas and liquid phases, alkali mist and undissolved particles carried in the gas are reduced, and the separation efficiency is improved.

The invention relates to an air cooling mechanism for split cooling of a copper wire of a photovoltaic welding strip, and belongs to the technical field of photovoltaic welding strip product.The air cooling mechanism for split cooling of the copper wire of the photovoltaic welding strip comprises a low-temperature liquid box, and the lower end of the low-temperature liquid box is fixedly connected with a vortex tube; the cooling mechanism is mounted in the low-temperature liquid tank, and the surface of the cooling mechanism extends to the outside of the low-temperature liquid tank; according to the photovoltaic welding strip cooling device, the arranged dehumidification assembly is used for guiding air flow for cooling the photovoltaic welding strip and condensing moisture in the air flow at the same time, the surface humidity of the photovoltaic welding strip is reduced, and meanwhile the dehumidification assembly is matched with the low-temperature assembly to keep the ambient temperature in the photovoltaic welding strip cooling work in a relatively low state; the heat loss of low-temperature gas cooling work is reduced, the situation that moisture in gas condenses on the surface of the photovoltaic welding strip is reduced while the photovoltaic welding strip is cooled, the situation that the photovoltaic welding strip is corroded is reduced, and the quality after metal machining is guaranteed.

The utility model provides a gas cooling device. The gas cooling device comprises a tank body, a gas conveying structure and a cooling structure, wherein the mixed gas guided by the gas conveying structure is guided into the cooling oil, liquid carbon dioxide formed after the mixed gas is cooled by the cooling oil sinks to the position below the cooling oil, and the remaining mixed gas rises to the upper portion of the bearing cavity. According to the gas cooling device, the tank body is arranged, cooling oil can be borne through the bearing cavity of the tank body, cooled liquid carbon dioxide is discharged through the discharging port in the bottom end of the tank body, and mixed gas of non-liquefied carbon dioxide gas and hydrogen is discharged through the exhaust port in the top end of the tank body; a gas conveying structure is arranged on the tank body and can extend into the bearing cavity from the top end of the tank body and extend to the bottom of the bearing cavity, and mixed gas is discharged from the position below the liquid level of cooling oil for cooling; and the cooling structure is arranged on the tank body, mixed gas on the upper portion of the bearing cavity can be cooled, the cooling efficiency is good, and practicability is good.

The invention discloses a device for treating tar residue in ammonia water, which comprises a pre-separator, a separation tank, a press pump, a delivery pump and a super centrifuge, a raw material inlet of the pre-separator is connected with a gas-liquid separator, and a tar ammonia water outlet is connected with a feed inlet of the separation tank through a tar residue filter screen; a feed port of the squeezing pump is connected with a bottom outlet of the pre-separator, and a discharge port of the squeezing pump is connected with a top inlet of the pre-separator; an ammonia water outlet of the separation tank is connected with a coke oven raw gas cooling device through an ammonia water circulating pump, and a tar residue outlet is connected with a feeding hole of the super centrifuge through a conveying pump; a tar outlet of the super centrifuge is connected with a tar intermediate tank, an ammonia water outlet is connected with a waste liquid tank, a tar residue outlet is connected with a tar residue buffer tank, and the tar residue buffer tank is connected with a coal tower through a hydraulic plunger pump. The floor is of a closed structure, leakage of tar, water and harmful peculiar smell gas can be prevented, environmental pollution is eliminated, the floor cleaning workload is reduced, and the body health of workers is guaranteed.

The invention discloses a gasification system and method for harmless treatment of oily sludge, and relates to the technical field of oily sludge treatment, the system comprises an oily sludge drum-type gasification furnace and an oil-gas separation device; wherein the oil sludge drum-type gasification furnace comprises a microwave heating zone I, a microwave heating zone II, an oil sludge inlet pipeline, a high-temperature oil gas outlet pipeline, an oil sludge inlet and an oil sludge drum-type gasification furnace main body; the oil-gas separation equipment comprises a high-temperature oil-gas cooling water pipeline, a gasified tar collecting box, a high-temperature oil-gas pipeline and a tar outlet pipeline. According to the invention, water contained in the oil sludge is heated into water vapor as a gasifying agent, so that high-concentration H2 can be generated, and the synthetic gas obtained by gasification is higher in heat value and higher in utilization value; and three-phase products obtained by gasification can be respectively utilized, so that the resource utilization degree of the oil sludge is improved while harmless treatment of the oil-containing sludge is realized, and the method has higher heat efficiency, high gasification temperature and short heating time consumption, thereby being more energy-saving.

The invention discloses a high-temperature stable gas heat conduction temperature control method and system, and relates to the technical field of temperature control. The system comprises a high-temperature inert gas loop, a gas circulation driving module, a gas heating module, a gas heat exchange module, a gas cooling module, a gas purification and supplement module and a precise temperature sensing and control module. The high-temperature inert gas loop is configured as a closed circulation path and is used for bearing high-purity inert gas as a heat carrier; and the gas circulation driving module is arranged in the high-temperature inert gas loop and is used for driving the high-purity inert gas to continuously and circularly flow in the closed circulation path. By adopting high-purity inert gas as a heat-conducting medium and combining precise circulation driving, multi-stage heating, efficient heat exchange, active cooling, online purification and intelligent control technologies, the problems that an existing liquid heat-conducting medium is unstable in phase change at a high temperature, a metal eutectic medium is poor in safety, and a composite system is high in complexity are solved.

The utility model relates to the technical field of gas cooling equipment, and discloses a chlorine gas cooling device. The problems that in the prior art, a chlorine cooling device is complex in structure and high in manufacturing cost, and welding seams are too many and prone to corrosion are solved. Comprising a cooling water tank, the cooling water tank is provided with a water inlet and a water outlet, at least one integrally-formed gas conveying pipe is arranged in the cooling water tank in a penetrating mode, and the gas inlet end and the gas outlet end of the gas conveying pipe are arranged on the side wall of the cooling water tank. The chlorine cooling device is used for cooling high-temperature chlorine generated by electrolyzing molten salt, is formed by arranging the gas conveying pipe in the cooling water tank in a penetrating mode, and is simple in structure and low in manufacturing cost; the gas conveying pipe is of an integrally-formed structure without welding seams, welding seam corrosion is avoided, and the service life is prolonged.

The invention discloses a die-casting die oil cylinder piston rod with a built-in high-pressure air cooling channel, relates to the technical field of automobile non-ferrous metal casting, and aims to solve the technical problem that high-temperature transmission in the piston rod is difficult to solve fundamentally by adopting an external cooling mode. One end of the piston rod body is connected with a driving end connector, the other end of the piston rod body is connected with a tail barrel, the air inlet end of the tail barrel is connected with a vortex cooling pipe, a control frame is arranged on the side of the tail barrel, and an inner cavity of the piston rod body is provided with a direction adjusting unit and an airflow channel. A transfer groove, a plurality of cylinder direction cooling channels and a plurality of die direction cooling channels are formed in an inner cavity of the driving end connector, the direction adjusting unit comprises an adjusting block arranged in the transfer groove in a sliding mode, the side wall of the adjusting block is connected with an adjusting rod, and a driving piece is arranged at the end of the adjusting rod. The piston rod has the advantages that air cooling is conducted on the interior of the piston rod body, and secondary heat exchange is achieved through residual cooling capacity of cold air flow.

The invention provides a deep space exploration simulation test system and method.The deep space exploration simulation test system comprises a thermal interface structure, a cryogenic subsystem and a heating structure, the cryogenic subsystem can refrigerate and cool the thermal interface structure, and the heating structure can heat the thermal interface structure; the deep cooling subsystem comprises a low-temperature refrigeration assembly and a gas cooling assembly, the low-temperature refrigeration assembly transmits cold energy to the thermal interface structure in a one-way mode, and the gas cooling assembly cools the thermal interface structure through cooling gas. The continuous temperature regulation in the range of 300K to 423K is realized through the combination of air cooling and electric heating, and the continuous temperature regulation in the range of 38K to 300K is realized through the combination of a G-M low-temperature refrigerator and electric heating; compared with the existing space environment simulation equipment, the temperature zone can be expanded to 38K to 423K, and the extreme temperature zone environment required by deep space exploration including the lunar surface polar zone and the Mars can be completed; meanwhile, the integrated heat exchange cryogenic subsystem based on heat conduction and convection is compact in structure, liquid nitrogen and liquid helium do not need to be used, and energy conservation and environmental protection are achieved.

The present invention discloses a hydrogen preservation process system and method; the present invention relates to the field of food engineering technology; it comprises a fresh-keeping cabinet 1, wherein a hydrogen production system 5 for preparing hydrogen is designed inside the fresh-keeping cabinet 1. The hydrogen production system 5 works based on the electrolysis principle, and its core components include a pure water tank 501, a water electrolyzer 505, a separation scrubber 502, a gas cooler 503, and a gas-water separator 504. In specific implementation, the pure water tank 501 is connected to the water inlet of the water electrolyzer 505 through a pipeline to provide the water electrolyzer with pure water for electrolysis. After being powered on, the water electrolyzer 505 decomposes water into hydrogen and oxygen. Subsequent gas cooling, impurity removal, and gas-water separation steps further purify the hydrogen to ensure the purity of the output hydrogen and meet the high requirements for food preservation. Pure water is used as the electrolysis raw material, and the process is clean and pollution-free. Hydrogen is used as a fresh-keeping gas, which is non-toxic and harmless and environmentally friendly.

The invention relates to the technical field of air liquefaction, in particular to an LNG (Liquefied Natural Gas) cold energy air liquefaction system based on vapor compression type heat pump circulation, which comprises an LNG gasification circulation unit and a vapor compression type cold energy transmission heat pump circulation unit, a circulation refrigerant circulates in the LNG gasification circulation unit and is used for recovering LNG liquid low-temperature cold energy to liquefy lower-temperature air; an air pressurization liquefaction circulation unit; and the secondary refrigerant gas cooling circulation unit is used for recovering sensible heat cold energy of gasified LNG and cooling gas compressed by the steam compression type cold energy transmission heat pump circulation unit and the air pressurization liquefaction circulation unit. According to the LNG cold energy air liquefaction system based on the vapor compression type heat pump cycle, LNG liquid low-temperature cold energy is recycled, the temperature grade of the cold energy is improved, then lower-temperature air is liquefied, phase-change throttling heat exchange is adopted in the vapor compression cycle, cooling is fast, the variable load capacity is high, and the energy consumption is low. And the LNG cold energy is efficiently recycled to continuously liquefy air under the LNG discontinuous supply fluctuation working condition.

The invention provides a diffuser and a fuel gas cooling device, and relates to the technical field of aerospace, the diffuser is mainly composed of a plurality of diffuser units which are connected end to end in a sealed mode, the diffuser can provide a vacuum environment for a vacuum cabin of an engine, the diffuser units are of tubular structures, and when fuel gas is injected to the diffuser units, the fuel gas is cooled through the diffuser units. The pressure intensity of the vacuum chamber is reduced, a vacuum environment is achieved, the diffuser units located at the two ends are installed inside and outside the vacuum chamber at the same time, the diffuser unit located in the middle is installed at an outlet of the vacuum chamber, and therefore the diffuser units of different sections can be replaced according to needs. The different diffuser units located in the vacuum cabin can adapt to engines of different ranges and models, any section of diffuser unit can be independently replaced in time when damaged, the narrow space of the vacuum cabin and the cabin passing flange of the vacuum cabin can be fully utilized, and the cost of the diffuser can be reduced.

The invention discloses a preparation method of a low-cost 1000MPa-grade cold-rolled dual-phase steel plate. The low-cost 1000MPa-grade cold-rolled dual-phase steel plate comprises the following components in percentage by weight: 0.16%-0.18% of C, 0.30%-0.40% of Si, 1.65%-1.80% of Mn, 0.20%-0.30% of Cr, 0.020%-0.040% of Ti, 0.0015%-0.003% of B, 0.030%-0.060% of Al, less than or equal to 0.015% of P, less than or equal to 0.010% of S and the balance of Fe and other inevitable impurities. Through low-cost component design and effective control of key process parameters of each process section, the tensile strength of the prepared cold-rolled dual-phase steel plate is larger than or equal to 980 MPa, the yield strength is 550-730 MPa, the A80 percentage elongation after fracture is larger than or equal to 10%, and the 1000 Mpa-grade cold-rolled dual-phase steel is produced through a low-cost gas cooling line while the comprehensive application performance is achieved.

The invention discloses an ultra-clean converter one-time dry dust removal system which comprises a high-effect heat exchanger, a rotational flow heat recovery device, an electrostatic dust remover, a high-temperature-resistant anti-explosion ultra-clean dust remover, a cooling replacement fan, a clean gas pipe, a gas axial flow fan and a gas washing dehydrator. A converter sequentially passes through a high-efficiency heat exchanger and a rotational flow heat recovery device and then enters an electrostatic dust collector and / or a high-temperature-resistant explosion-proof ultra-clean dust collector to form clean coal gas, the concentration of an outlet of the ultra-clean dust collector can be kept stable below 5mg / Nm < 3 >, and then the clean coal gas is washed and cooled through a coal gas axial flow fan and a coal gas cooling dehydrator and then is conveyed to a coal gas switching station. Conveying the qualified coal gas to a coal gas cabinet; unqualified coal gas is sent to a diffusion chimney to be ignited and diffused.

The tower for cooling, dust removal and liquid removal of the high-dust gas comprises a tower body, the tower body is provided with an upper pressure cavity and a lower pressure cavity, and dust-containing gas enters from the lower pressure cavity and sequentially passes through a cyclone separator, a rotational flow tower disc and a wire mesh demister from bottom to top for liquid removal and dust removal. The switch control valve is opened, high-temperature gas purified by the lower pressure cavity can enter the upper pressure cavity and sequentially passes through the gas inlet distribution pipe, the packed tower tray and the V-shaped baffle plate demister from bottom to top, and meanwhile, cooling water from the outside sequentially passes through the cooling water feeding pipe, the packed tower tray and the groove tray type distributor from top to bottom; and heat exchange cooling between the cooling water and the purified gas is carried out in a filling manner. The switch control valve is used for controlling the flow of the purified gas to be cooled, and communication of the upper pressure cavity and the lower pressure cavity is achieved. By adopting the design, the functions of dust removal, liquid removal and gas cooling of the tower can be efficiently realized.

The invention relates to a system for alternately using, recycling and cooling high-pressure gas of a differential pressure coating machine and a control method, which comprise the following two aspects: firstly, the system for alternately using, recycling and cooling high-pressure gas of the differential pressure coating machine comprises the differential pressure coating machine which comprises a reaction bin device and a workbench device arranged opposite to the reaction bin device, the reaction bin device comprises an upper reaction cavity and a lower reaction cavity opposite to the upper reaction cavity; the gas treatment system comprises an upper vacuum gas pump, a lower vacuum gas pump, a gas source, a first gas inlet valve piece, a first gas storage tank, a second gas inlet valve piece, a second gas storage tank, a first switch valve piece, a second switch valve piece and a high-pressure conveying and recycling pipeline, and the high-pressure conveying and recycling pipeline is communicated with a high-pressure recycling switch valve piece; the upper reaction cavity is communicated with a first inflation and deflation valve, the lower reaction cavity is communicated with a second inflation and deflation valve, and a gas cooling system is also arranged; the invention further discloses a control method of the system for alternately using, recycling and cooling the high-pressure gas of the differential pressure coating machine.

The utility model discloses a system for efficiently preparing liquid nitrogen by using a two-stage membrane separation technology, and relates to the technical field of industrial purification and liquefied nitrogen. The membrane separation technology and the gas liquefaction technology are combined, so that nitrogen in air is purified, the residual pressure of medium-pressure gas is fully utilized to provide cold energy for high-concentration nitrogen liquefaction, and the residual potential energy of the high-concentration gas is utilized to improve the nitrogen generation efficiency. A compressor, a gas cooling module, a first-stage separator and a second-stage separator of the system are sequentially arranged in the flowing direction of air. A high-pressure outlet of the second-stage separator is communicated with a first hot end inlet of the first heat exchanger; a first outlet of the first heat exchanger is communicated with a hot end inlet of the second heat exchanger, a second hot end inlet is communicated with a side backpressure outlet of the first-stage separator, a second outlet is communicated with a cold end inlet of the second heat exchanger through an expansion machine, a third outlet is communicated with atmosphere, and the cold end inlet is communicated with a second outlet of the second heat exchanger; and a side backpressure outlet of the second-stage separator is communicated with the compressor.

The utility model provides a tail gas cooling structure and polycrystalline silicon equipment, the tail gas cooling structure comprises a jacketed pipe and a guide plate, the jacketed pipe comprises an inner pipe and an outer pipe, the outer pipe sleeves the periphery of the inner pipe, a tail gas channel is formed in the inner pipe, and a cooling cavity for accommodating a cooling medium is formed between the inner pipe and the outer pipe; the guide plate is arranged in the cooling cavity. According to the tail gas cooling structure, the flow guide plate is arranged in the cooling cavity between the inner pipe and the outer pipe, so that the cooling medium flows according to a specific path, it is ensured that the cooling medium sufficiently flows through all areas of the cooling cavity, and cooling is more uniform. And meanwhile, the guide plate is arranged, so that the contact time of the cooling medium and the inner pipe can be prolonged, the heat exchange efficiency is optimized, tail gas in the tail gas channel can be cooled more effectively, and the cooling and heat exchange performance is improved. In addition, the contact temperature of the inner pipe and the tail gas is reduced, so that the silicon junction condition of the inner pipe is reduced, and the cleaning difficulty is further reduced.

A seal gas cooling circuit system (100) includes a gas seal (102) comprising: a seal gas inlet (106); and a seal gas outlet (108). The system (100) also includes a recirculation flow path (110) disposed between the seal gas inlet (106) and the seal gas outlet (108) for recirculating a seal gas through the gas seal (102); and a heat exchanger (112) disposed in the recirculation flow path (110) for cooling a temperature of the seal gas.

The invention relates to a third-generation converter gas dry dust removal system which comprises a high-effect heat exchanger, a banana bend dust remover, a rotational flow heat recovery device, a water cooling roller, a raw gas pipe, a high-temperature-resistant explosion-proof ultra-clean dust remover, a fine ash bin, a clean gas pipe, a gas axial flow fan and a gas cooling dehydrator. A banana bend dust remover is arranged between the high-effect heat exchanger and the rotational flow heat recovery device, and the rotational flow heat recovery device is connected with the high-temperature-resistant explosion-proof ultra-clean dust remover through a raw gas pipe. A clean gas pipe is arranged at an outlet of the high-temperature-resistant explosion-proof ultra-clean dust remover, clean gas is conveyed to a gas switching station through a gas axial flow fan, and the gas which is detected to be qualified is conveyed to a gas cabinet after being washed and cooled through a gas cooling dehydrator; unqualified coal gas is sent to a diffusion chimney to be ignited and diffused. The problem that high-quality heat is not recycled is solved, the problem that a dry dust removal system is prone to explosion venting is also solved, and the application prospect is wide.

The utility model provides an injection molding device for a power battery structural member, which belongs to the technical field of injection molding devices and comprises an injection molding mechanism, a fixed mold, a movable mold assembled with the fixed mold, two driving cylinders for driving the movable mold to lift, a fixed frame for supporting the fixed mold, and a pushing cylinder fixedly mounted on the inner side of the fixed frame, the pushing plate is fixedly mounted at the output end of the pushing cylinder and is used for demolding the structural part; and the cooling mechanism comprises a water cooling part used for carrying out liquid cooling on the fixed mold and an air cooling part used for carrying out air cooling on the interior of the fixed mold. Through the cooperation of the water-cooling part and the air-cooling part, the cooling effect in the fixed mold can be effectively improved, the temperature of a structural part can be quickly reduced, the problem of low efficiency easily caused when a traditional injection molding device only depends on a water-cooling mode for cooling is solved, the cooling efficiency of the injection molding device is improved, and the production efficiency of the structural part is ensured.