43results about How to "Increase oxygen content" patented technology

The invention discloses a silicon single crystal rod and a preparation method thereof, a silicon wafer and a solar cell, and belongs to the technical field of photovoltaic module preparation. The single crystal silicon rod contains an antimony element and a hydrogen element, the doping concentration of the antimony element in the single crystal silicon rod is Ca, the doping concentration of the hydrogen element in the single crystal silicon rod is Cb, and Ca / Cb is greater than or equal to 1E <-3 > and less than or equal to 4E + 2. According to the silicon single crystal rod provided by the invention, the antimony and the hydrogen are doped at the same time, and the effective segregation coefficient of the antimony in the crystalline silicon is improved through the interaction of the hydrogen and the antimony, so that the resistivity change uniformity of the silicon single crystal rod is improved, the oxygen content of the silicon single crystal rod is improved, the service life of the silicon single crystal rod is prolonged, and the resistivity is accurately controlled; the resistivity of the monocrystalline silicon rod and the derivative product thereof is more uniform and concentrated, and the performance and the production efficiency of the czochralski monocrystalline silicon and the battery can be effectively improved.

The present application relates to the technical field of metallurgical production, in particular to a method for reducing the mixing amount of coke oven gas in lime double-D kiln by oxygen-enriched combustion, specifically, oxygen injection guns and oxygen-enriched valve groups are installed in the air pipeline of the lime double-D kiln to control the oxygen flow, the lime double-D kiln is started, mixed gas containing coke oven gas and converter gas is introduced, the oxygen-enriched valve groups are then started, the oxygen enrichment degree is set from 1% and gradually increased, and the highest oxygen enrichment degree does not exceed 9%, the air-fuel ratio and the excess air coefficient are simultaneously reduced, and the mixed gas flow is reduced. By the method of oxygen-enriched combustion, the oxygen content in the calcination combustion-supporting air is increased, the combustion efficiency is improved, the combustion temperature is optimized, the air demand and the combustion product generation amount are reduced, the heat taken away by the flue gas is reduced, thereby the heat loss of exhaust gas can be reduced, the theoretical combustion temperature and the furnace gas radiation capacity can be improved, and the energy consumption can be greatly reduced.

The utility model relates to the technical field of crab breeding, in particular to a crab breeding monitoring device which comprises a frame, a water tank is arranged in the frame, a breeding box is arranged on the water tank, a visual module matched with the breeding box is arranged on the frame, a controller is arranged on one side of the frame, a water tank is arranged in the frame, and the controller is connected with the water tank. The water inlet end and the water outlet end of the breeding box are both connected with the water tank, a movable frame is arranged on the frame, a mechanical arm is arranged on the movable frame, a driving structure is arranged on the frame, the driving structure is in power connection with the movable frame, life pictures of crabs are collected by arranging a visual module, remote monitoring is achieved, and the visual module is connected with the water tank. The water tank is connected with the water tank, circulating water flow is formed, water can be supplemented to the water tank in time, sewage in the water tank can be discharged, the bred crabs and the breeding box can be taken out through the mechanical arm, and the labor burden is reduced.

This invention provides a medium-oxygen weathering steel and its preparation method, belonging to the field of weathering steel production technology. The chemical composition of the medium-oxygen weathering steel includes: C, Si, Mn, P, S, Cr, Cu, Ni, O, and Fe; by mass fraction, the content of C is 0.08%–0.10%, the content of Si is 0.30%–0.50%, the content of Mn is 0.50%–0.65%, the content of P is 0.08%–0.10%, the content of S is ≤0.005%, the content of Cr is 0.40%–0.55%, the content of Cu is 0.30%–0.45%, the content of Ni is 0.10%–0.40%, and the content of O is 0.005%–0.012%. The oxygen content is increased from below 0.003% in ordinary weathering steel to the range of 0.005-0.012%, resulting in silicate inclusions that are more stable and less prone to corrosion. Furthermore, some silicon-manganese-aluminum oxides form composite inclusions with MnS, causing the MnS inclusions to change from long strips to short strips, thus inhibiting corrosion propagation. As a result, the corrosion rate of medium-oxygen weathering steel is reduced by more than 18%, making it suitable for more severe corrosive environments and solving the problem of poor corrosion resistance of ordinary weathering steel in current technologies.

This invention relates to the field of waste incineration system technology, specifically to an energy-saving oxygen-enriched incineration system for municipal solid waste in high-altitude areas. The system includes an incinerator, a secondary combustion section, and an exhaust pipe connected in sequence. The incinerator contains a primary combustion chamber with a first combustion grate. An air supply section is located on the side of the incinerator, containing a mixing chamber. The air supply section is equipped with oxygen supply equipment and a blower connected to the mixing chamber. A horizontal air pipe connected to the mixing chamber is horizontally arranged within the primary combustion chamber. Several vertical air pipes are vertically arranged above the horizontal air pipes, with their upper ends positioned above the first combustion grate. Several short exhaust pipes are arranged on the outer wall of the vertical air pipes, with the exhaust pipes angled downwards from one end connected to the vertical air pipe to the other. This invention addresses the problem in existing technologies where increased energy consumption during the incineration of municipal solid waste in high-altitude areas is easily caused by factors such as oxygen content and temperature.

The utility model relates to the technical field of coking wastewater treatment of steel mills, in particular to efficient wastewater purification and waste heat recovery integrated equipment for coking of steel mills, which comprises a rough filtration tank, an aeration tank is fixedly mounted on the outer surface of the rough filtration tank, and a heat preservation water tank is buried on the ground of one side of the rough filtration tank. And heat dissipation fins are fixedly mounted in the filtering sedimentation tank. According to the efficient wastewater purification and waste heat recovery integrated equipment for coking in the steel mill, wastewater is filtered by a filtering fence after being discharged into a coarse filtering box and then enters a filtering and settling pond to be filtered step by step, and when the wastewater flows through the filtering and settling pond, heat of the wastewater is absorbed by heat dissipation fins, so that the heat dissipation efficiency of the wastewater is improved. At the moment, the first circulating water pump is started to pump out the water in the heat preservation water tank and take away heat, so that the temperature can be reduced while impurities in the waste water are settled, the temperature can be stored in the heat preservation water tank, and the heat of the waste water can be recycled for other purposes.

A method for preparing nickel powder through electrolysis of nickel sulfate waste liquid in one step comprises the steps that the nickel sulfate waste liquid is diluted to a certain concentration by controlling the reduction degree of Ni < 2 + > under different cathode conditions, and different nickel electrolysis products are selectively prepared in the diluent; ti plated TaO2 / I rO2 alloy is used as an anode, a Ti sheet is used as a cathode, electrolysis is carried out under the conditions that the current density is 30-2000A / m < 2 >, the electrolyte temperature is 20-60 DEG C and the nickel ion concentration is 0.025-1.0 mo l / L, and nickel powder is obtained through electrodeposition on the cathode after electrolysis is finished; a circulating pump is used for recycling waste liquid; the electrolytic nickel powder prepared through the method is simple in required equipment, short in technological process, mild in condition, low in production cost, high in efficiency, environmentally friendly, suitable for one-step preparation of the nickel powder through the high-impurity nickel sulfate waste liquid and suitable for one-step preparation of the electrolytic nickel powder through the pure nickel sulfate solution. The method is especially suitable for environmental protection enterprises of nickel-containing waste liquid.

This utility model discloses a dual-source multi-combustion system, comprising: a boiler, wherein an exhaust gas burner, a pulverized coal silo burner, and at least two air-coal burners are provided; a plurality of main combustion coal mills are connected to one or more air-coal burners; a plurality of pulverized coal storage mills are connected to the remaining air-coal burners in the boiler; a gas drying system is connected to the main combustion coal mills and the pulverized coal storage mills respectively, for drying and conveying the coal ground in the main combustion coal mills and the pulverized coal storage mills to form primary air-coal mixture; a plurality of fine powder separators are used to separate the primary air-coal mixture to form pulverized coal and exhaust gas; a plurality of exhaust gas fans are used to collect exhaust gas, and the outlets of the exhaust gas fans are connected to the exhaust gas burner and the pulverized coal storage mill respectively; a plurality of pulverized coal silos are used to collect the pulverized coal generated in the fine powder separators; a hot medium conveying system is used to convey the pulverized coal in the pulverized coal silos to the pulverized coal silo burners, and the gas drying system is also connected to the hot medium conveying system to preheat the pulverized coal conveyed to the pulverized coal silo burners.

This utility model relates to a chemical reagent wastewater treatment device, belonging to the technical field of wastewater treatment devices. It includes a filter box, with a pressurizing mechanism at the top for filtering and pressurizing the wastewater. A water pipe is fixedly connected to the right side of the filter box, and a reaction chamber is fixedly connected to the side of the water pipe away from the filter box. A stirring mechanism for mixing wastewater and reagents is located at the top of the reaction chamber, and an air injection component for continuously supplying gas is located on the left side of the reaction chamber. This chemical reagent wastewater treatment device uses a drive motor to repeatedly move the filter section up and down, thereby filtering the wastewater while continuously pressurizing the filtered water into the reaction chamber for subsequent treatment. The pressurizing mechanism is detachable, making it easy to clean large particles from the filter section surface. The combination of the stirring and air injection components effectively mixes the wastewater and the added reagents, improving the uniformity of the mixture.

The application relates to a breeding tail water treatment device and method based on piezoelectric strengthening, which comprises a water supply pump, a jet aerator, a biological aerated filter and an anaerobic tank. The application can improve the oxygen content of sewage and can induce piezoelectric air filter membranes to generate piezoelectric effect through flowing air, so as to obtain piezoelectric charge and voltage. The piezoelectric charge can react with oxygen and water to generate active oxygen species, so as to realize the conversion of air kinetic energy into electric energy and chemical energy. The piezoelectric voltage directly drives the anode and the cathode to work, and can enrich the functional bacteria of the biological treatment unit, improve the activity of functional microorganisms, and the active oxygen species can directly degrade organic pollutants, so as to synergistically enhance the performance of removing pollutants.

This application relates to the field of ecological environment restoration technology, and in particular to a wetland ecological restoration and environmental management device, comprising a floating mechanism, an aeration mechanism, a material throwing mechanism, and a control mechanism. The floating body carries the aeration and material throwing mechanisms and floats on the water surface. The aeration mechanism is used to introduce oxygen into the water, and the material throwing mechanism is used to release oxygen-releasing elements into the water. The oxygen-releasing elements fall into the silt layer at the bottom of the water body, and dissolve and release oxygen in the water to increase the oxygen content. The control mechanism is used to control the operation of the aeration and material throwing mechanisms. In this application, through the coordinated operation of the aeration and material throwing mechanisms, the wetland water body can maintain a high oxygen content for a longer period of time, thereby restoring and enhancing the vitality of aerobic microorganisms in the water, purifying pollutants in the water, improving the water quality of the wetland, eliminating black and odorous water, and thus achieving the purpose of wetland ecological restoration and environmental management.

This invention discloses a method for preparing sodium lignin sulfonate-based porous carbon and its application, belonging to the field of efficient resource utilization of biomass and water treatment technology. The method selects sodium lignin sulfonate waste from pulp mills as a carbon source, and processes it to obtain sodium lignin sulfonate powder; the sodium lignin sulfonate powder is then blended with SiO2 and / or HCO2K and activated to obtain sodium lignin sulfonate-based porous carbon; this carbon is then applied to the removal of antibiotics from water. This invention fully utilizes the waste sodium lignin sulfonate from pulp mills, realizing the recycling of waste, increasing the added value of waste, and the preparation process is simple, pollution-free, environmentally friendly, and in line with green chemistry principles.

The present application relates to copper-aluminum composite plate strip technical field, especially a kind of copper-aluminum composite plate strip and production method, it is made of aluminum material and copper material composite, the oxygen content of copper material is 50ppm-500ppm, production method includes oxygen-increasing treatment to red copper or oxygen-free copper, the present application reduces the recrystallization temperature of copper material by increasing the oxygen content in copper material, in turn reduces annealing temperature, copper-aluminum composite blank heat treatment below 300 DEG C can satisfy copper material complete recrystallization, realize soft annealing, meet the demand of bending, while reducing the thickness of copper-aluminum intermetallic compound in heat treatment process, improve the composite strength of copper-aluminum composite plate strip.

The utility model discloses an air energy type oxygen -increasing machine relates to oxygen -increasing machine technical field, including the buoyancy tank, the buoyancy tank inside cooperation and installation have water pump and / or motor, the utility model discloses when using, the water pump is opened, and the water pump carries out the extraction to the water body, then throws the water body to the air, and the water body scatters to the four around in the air, through the mode of injection makes the water body and air fully contact to increase the oxygen content of water body to reach the effect of oxygen -increasing, when opening the motor, the motor drives first fan blade and second fan blade high -speed rotation, and water surges from the water inlet channel of the periphery of the conical water inlet connecting piece, and first fan blade stirs the water body, under the high -speed rotation state, the water body is thrown up, when the water body that is choked up collides with the high -speed rotation second fan blade, will form several tiny water droplets and spread to the four around, like this can make the water body and air contact area greater, make the water body more oxygen -rich.

The purpose of this invention is to provide an aircraft air conditioning system that can increase the oxygen content of cabin air and reduce the amount of bleed air from the power unit. The aircraft air conditioning system of this invention includes: an air separator that separates oxygen and nitrogen from the bleed air from the power unit to form an oxygen-enriched gas with an oxygen concentration higher than that in the bleed air and a nitrogen-enriched gas with a nitrogen concentration higher than that in the bleed air; and an air mixing chamber connected to the air separator, wherein the oxygen-enriched gas formed in the air separator is supplied to the air mixing chamber, and the oxygen-enriched gas is mixed with secondary air in the aircraft cabin in the air mixing chamber, and the mixed gas is supplied to the aircraft cabin.

The utility model discloses a combustion-supporting air inlet structure of a rotary kiln, and relates to the technical field of rotary kilns. The device comprises a fixing plate and a centrifugal fan, an air inlet assembly is arranged on the fixing plate, the air inlet assembly comprises a flow dividing disc fixedly connected to the side, away from the centrifugal fan, of the fixing plate and a sleeve penetrating through the fixing plate, and the flow dividing disc is fixedly communicated with a plurality of telescopic joints through branch pipes. And the interior of the sleeve is in threaded connection with a threaded rod, and a pretreatment assembly is arranged on the side, away from the fixing plate, of the centrifugal fan. The movable plate and the air inlet spray head are driven to move through the sleeve and the threaded rod, so that the air inlet position of the rotary kiln is adjusted, the problem that the air inlet position is inconvenient to adjust in the prior art is solved, combustion-supporting air is dehumidified through the filling frame, the combustion-supporting air is oxygenated and preheated through the oxygenation pipe and the serpentine pipe, and the air inlet position is adjusted. The problem that combustion-supporting air is inconvenient to pretreat in the prior art is solved.

The invention belongs to the field of oil and gas field environmental protection equipment, and relates to a petroleum-contaminated soil microbiological treatment self-ploughing system and method, which are suitable for performing petroleum-contaminated soil microbiological treatment by adopting a composting process. The soil above is pushed to displace through gradual expansion of the ploughing rubber air bag, automatic ploughing in the treatment process is achieved, the oxygen content in the soil is increased, the growth and reproduction environment of microorganisms is improved, and therefore the biodegradation process of petroleum hydrocarbon is accelerated.

The application provides a fish-vegetable compound breeding and planting wintering greenhouse, which comprises a greenhouse built by a gable, a side wall and a supporting framework, a humidity isolation device is arranged in the greenhouse, the greenhouse is isolated into a vegetable planting area and a fish breeding area through the humidity isolation device, humidity in the fish breeding area is blocked from entering the vegetable planting area, a closable ventilation opening is formed in the humidity isolation device, a dehumidification device and a ventilation fan are further arranged on the ventilation opening, air in the vegetable planting area and the fish breeding area is exchanged and circulated through the operation of the ventilation fan, oxygen content in the fish breeding area is increased, and the air flowing from the fish breeding area to the vegetable planting area is dehumidified through the dehumidification device, so that the humidity of the vegetable planting area is adjusted, the influence of high humidity on the growth of fruits and vegetables in the vegetable planting area is avoided, and the risk of inducing diseases such as fungi and bacteria of fruits and vegetables is reduced.

The application discloses a kind of oyster culture cage with antibacterial and insecticidal function and preparation method in the field of aquaculture equipment, and the oyster culture cage includes cage body, and the center of cage body is rotationally matched with center shaft, and the outer periphery of center shaft is arranged with several culture blocks for oyster adsorption;Center shaft outer wall is fixedly connected with push plate and several rotary leaves, and several through holes are opened on rotary leaves, and the through holes are all communicated with pipelines;The bottom of center shaft is provided with a conversion mechanism for converting the intermittent rotation of the center shaft into continuous rotation, and the bottom of the shaft is provided with a fan blade for generating upward water flow;During the oyster culture process, the push plate is driven to rotate by the sea waves on the sea surface, and then the microbial preparation or air is injected into the cage body through the pipeline, the push plate stirs the seawater through the rotary leaves and the upward water flow generated by the fan blade, so that the microbial preparation governs the harmful bacteria and parasites easily attached to the surface of oyster, and reduces the infection and disease probability of oyster.

The application provides a CuCrTi material and a method for manufacturing the CuCrTi material, the CuCrTi material contains 2-8 wt% of Ti, 44-53 wt% of Cu, and the balance of Cr, and in the microstructure of the CuCrTi material, a Ti phase is composed of Ti particles with an average particle size of 15-25 microns, and the Ti particles are surrounded around Cr particles. According to the application, the technical problems of too many internal pores, too poor compactness, too high oxygen content and too low hardness of the material are effectively solved, and the compactness is good, the oxygen content is low, and the application performance is good.

The batching tank comprises an aluminum alloy tank body of a hollow cylindrical structure, a feeding pipeline is fixedly installed above the aluminum alloy tank body in a penetrating mode, and a discharging pipeline is fixedly installed on the side face of the lower end of the aluminum alloy tank body in a penetrating mode. A central rotating shaft is rotationally mounted in the middle of the interior of the aluminum alloy tank body, stirring blades with hole structures are fixedly mounted outside the central rotating shaft, and the central rotating shaft is driven by a driving motor fixedly mounted on the upper surface of the aluminum alloy tank body. According to the batching tank for efficiently preparing the ammonia nitrogen degrading microbial preparation, a novel structural design is adopted, preparation raw materials are conveyed into the aluminum alloy tank body through the feeding pipeline, and then a driving motor is used for driving stirring blades to rotate to achieve the purpose of sufficient mixing; in the process, the air is pumped in by the delivery pump and is sprayed out from the oxygen supply nozzle through the connecting hose, so that the oxygen content in the solution is increased, and the influence of insufficient oxygen on flora activity is avoided.

The utility model relates to eel culture technical field, concretely is a kind of eel culture pond water inlet device, including culture bin, the inside fixedly connected with multiple fixed plates of culture bin, the lateral wall of fixed plate is all provided with reciprocating assembly, reciprocating assembly includes with the lateral wall fixed connection of fixed plate connecting shaft, the lateral wall rotationally connected with rotating lever of connecting shaft, the inside of rotating lever is provided with limit slot, reciprocating assembly utilizes the cooperation setting of rotating shaft, rotating lever, limit slot, connecting shaft to realize the reciprocating transverse motion of obstruction rod, the cooperation setting of obstruction rod, tooth block, connecting gear is realized to the plugging of the water outlet of water guide pipe end by plugging assembly, the reciprocation speed of obstruction rod is controlled by adjusting motor speed, and then the intermittent frequency and plugging duration of water flow are adjusted to trigger the automatic water spraying of diaphragm type sprinkler to make the water into culture bin can change inflow mode, further expand the oxygen content in water.

The utility model discloses an aeration device for algae culture relates to aeration equipment field, including the horizontal setting of gas supply pipe, and the outer circumferential surface intercommunication of gas supply pipe installs a plurality of aeration disc, and one end intercommunication of gas supply pipe installs the connecting pipe, and the other end intercommunication of connecting pipe installs the external gas supply pipe, and the other end of external gas supply pipe is connected with the input end of external gas supply equipment, and through external gas supply equipment will gas source input to aeration disc, and gas supply pipe along vertical direction sliding assembly, when the liquid surface in algae culture pond drops or rises, and gas supply pipe synchronous downward or upward movement. Through the height adjustable and overturning function of aeration disc, the gas exchange process in water body is optimized, thereby improving the carbon dioxide supply of algae, promoting photosynthesis, can also effectively reduce local peroxide or anoxic problem, reduce the instability of algae growth environment, improve the yield and quality of culture.

The utility model relates to the technical field of wastewater purification, in particular to a limestone-gypsum method desulfurization slurry preparation system. Comprising an accelerated clarification tank, and an ozone oxidation zone, a sludge buffer zone and a sludge settling zone which are communicated with one another are sequentially arranged in the accelerated clarification tank from top to bottom; an ozone uniform distribution device is arranged in the ozone oxidation zone and comprises an air inlet pipe, an air outlet pipe and an ozone outlet pipe, and air outlet holes are formed in the wall surface of the air inlet pipe; the ozone uniform distribution unit modules are arranged at intervals in the axial direction of the air inlet pipe, each ozone uniform distribution unit module comprises a fixing plate arranged in the vertical direction, the fixing plates are fixedly connected with the air inlet pipe, the wall face of each fixing plate is sequentially connected with a plurality of umbrella-shaped airflow uniform distribution plates from top to bottom, and airflow holes are formed in the umbrella-shaped airflow uniform distribution plates. Impurities such as organic matters in the solid-containing slurry can be effectively removed, and the gypsum quality can be improved; meanwhile, the oxygen content of the slurry is increased, and the energy consumption of an oxidation fan of a desulfurization facility is reduced.

According to the high-precision printing method for additive manufacturing of copper by increasing the oxygen content of the melt, selective laser melting printing is conducted through copper material powder with the oxygen content ranging from 300 ppm to 5000 ppm, or when the copper material powder is used for selective laser melting printing, the oxygen content in a forming cavity is controlled to range from 300 ppm to 5000 ppm. By effectively controlling the increase of the oxygen content, the precision of the copper melt during printing can be promoted, and by effectively increasing the oxygen content, the surface tension gradient, viscosity and wetting angle of the melt can be changed, so that the copper melt has higher stability, and the oxidation product of oxygen and copper can improve the wetting behavior of the melt and is beneficial to improving the surface quality; the powder sticking phenomenon on the melt surface is prevented. The high-precision printing method for additive manufacturing of copper by increasing the oxygen content of the melt has the advantages of being high in printing precision, low in surface roughness of a printing structure, high in surface quality, narrow in forming width and the like, and the technological method is controllable in process and low in cost.

This utility model discloses a high-efficiency and energy-saving aquaculture pond for *Leptobrachium rubrum*, relating to the field of aquaculture technology. It includes a filter frame, with the pond body fixed to the top of the filter frame. A cleaning component is installed on the inner wall of the pond body, and a filter screen is fixed to the inner wall of the pond body. An energy-saving component is installed on the outer side of the pond body. The beneficial effects of this utility model are: by setting up the cleaning component, uneaten feed and feces can be easily discharged from the pond, thus maintaining water quality. Simultaneously, the discharged uneaten feed and feces can also serve as fertilizer for plants in the bottom filter frame, and the water purified by the plants can be reintroduced into the pond to achieve a virtuous cycle. By setting up the energy-saving component, electricity can be saved while increasing the oxygen content in the water, thereby reducing the use of oxygenation equipment and further saving resource consumption.

The application discloses a kind of high-efficiency ectopic fermentation bed and application, belong to fermentation bed technical field, including multiple splicing bottom plate, the lower side of the splicing bottom plate is equipped with support leg, the splicing bottom plate is equipped with multiple air holes, multiple The splicing bottom plate is mutually spliced and forms bed bottom by connecting piece, the outside of the bed bottom is equipped with fence, the fence inner wall is equipped with transverse clamping rod, the transverse clamping rod is clamped with liquid injection pipe network, the fence inner wall is equipped with liquid inlet, the liquid inlet one end with The liquid injection pipe network is communicated by hose between, the other end of the liquid inlet is connected to liquid pump, the liquid inlet of the liquid pump is connected to concentrated biogas liquid by pipeline, the present application is enhanced by air pipe on air hole and air hole on protective cover Oxygen content when fermentation, temperature is regulated for fermenting material by temperature regulating pipe, liquid injection pipe network provides appropriate fermentation humidity for fermenting material, to improve the fermentation efficiency and fermentation quality of fermenting material.

The application discloses a preparation method of a second-generation high-temperature superconducting tape closed coil and a closed magnet, and belongs to the technical field of high-temperature superconducting applications. The preparation method comprises the following steps: winding the superconducting tape into a superconducting coil, and reserving two ends of the superconducting tape as two to-be-connected joints; removing a protective layer of the joint to expose a superconducting layer; coating a precursor liquid on the superconducting layer; performing heat treatment on the superconducting coil at a first set temperature, so that the coated precursor liquid becomes a gel; preparing a channel between concave-convex phases on the gel; overlapping the two to-be-connected joints through the channel, and performing heat treatment on the superconducting coil at a second set temperature, so that the gel becomes a tetragonal phase crystal; performing annealing treatment on the superconducting coil in an oxygen atmosphere, so that the tetragonal phase crystal becomes an orthorhombic phase crystal; and bridging the two to-be-connected joints with the orthorhombic phase crystal to obtain the closed coil. The closed magnet obtained based on the preparation method can realize closed-loop operation without attenuation.

This utility model relates to a siphon water system structure and an aquarium. The key technical features of the siphon water system structure are: a first water tank, a second water tank, and a third water tank are sequentially arranged on one side of the aquarium body; a lower oil film assembly is located at the upper end of the first water tank; the inlet of the first water tank is connected to the aquarium body via the lower oil film assembly; two symmetrical siphon drain holes, each connected to the aquarium body, are arranged on the first water tank; the outlets of the first and second water tanks are connected to the aquarium's filtration mechanism; an outlet is located at the upper end of the third water tank; the inlet of the third water tank is connected to the aquarium's water pump mechanism; the second water tank has a siphon-breaking hole connected to the aquarium body. Compared to conventional overflow-type drainage stream tanks, the siphon water system structure provides a larger water flow and greater water circulation. When used in conjunction with a drip tray in the aquarium, it can effectively increase the oxygen content in the water.

This utility model relates to the technical field of mine underground self-rescue devices, and discloses a novel mine compressed air and water supply resuscitation self-rescue device, including a box body. An isolation plate is provided inside the box body. The upper half of the isolation plate contains an air supply pipe, an air supply assembly, and a resuscitation assembly. The lower half of the isolation plate contains a water filter and a water supply pipe. The water supply pipe is connected to the water filter and has a drinking tap. An air inlet is located at the top of the air supply pipe. One side of the air supply pipe is connected to several air supply assemblies, and the lower part of the other side is connected to the resuscitation assembly. The air supply assembly includes a valve, a filter cylinder, and a self-priming filter mask. The resuscitation assembly includes an air distribution valve, a self-breathing valve, an automatic lung, a mask, and a suction device. An oxygen release device is connected to the upper part, and an external oxygen cylinder interface is added to the right side, which can directly release oxygen to function as an oxygen release device in the refuge chamber, increasing the oxygen content. It can also be used to directly inhale oxygen using the mask. This utility model has the following advantages: it provides life-sustaining air and water, enhances user comfort, is simple to operate, stable and reliable in operation, and has high safety performance.