58results about How to "Guaranteed oxygen concentration" patented technology

The invention discloses a closed-type constant-temperature multi-layer water circulation turtle cultivation system which comprises a multilayer turtle cultivation pool devices, a cultivation water environment adjusting device, an indoor air environment adjusting device and a cultivation system operation control device, wherein the multilayer turtle cultivation pool device comprises a plurality of turtle cultivation pools, circulating water return pipes, circulating water outlet branch pipes and main circulating water outlet pipes, primary solid liquid precipitation devices, blow-down valves and pollution discharge blow-down pipes; the cultivation water environment adjusting device comprises a solid-liquid separator, a blow-down valve, a sterilizer, a protein separator, a biological filtering device or tank, a circulating pump and a water heating device; and the indoor air environment adjusting device comprises an air heating device, an air oxygenating device and an insulation building. According to the closed type constant-temperature multi-layer water circulation turtle cultivation system, turtle cultivation environments can be comprehensively controlled, the land, the water and the energy are saved, an optimal ecological environment suitable for turtles to rapidly grow is established, turtle cultivation is free of drugs, and healthy and safe food sanitation requirements are met.

The invention discloses a decoupling control method based on a composite disturbance-rejection diesel engine VGT-EGR system. The method mainly comprises the steps of static feedforward control, dynamic feedforward control and active disturbance-rejection control (ADRC). According to the VGT-EGR system, a two-input two-output system is converted into two single-input single-output channels; the coupling influence between the two channels, changes of dynamic characteristics of each channel along with changes of the working condition of an engine, and disturbance of the external environment are totally regarded as the total disturbance. The ADRC is used for performing real-time observation and compensation on the total disturbance, and precise modeling is not needed; however, the bandwidth of the ADRC is limited by the sampling frequency and noise, and transient tracking is slow. Therefore, the static feedforward control is added into the method, and the simple and efficient dynamic feedforward control based on a model is specially designed. A simulation result and an experimental verification result show that control parameters of the method are easy to calibrate, and rapid tracking of the boost pressure and the air input in the whole working condition can be achieved only through one set of parameters.

The invention provides a waterlessly keep-alive device and a refrigerator with the same. The waterlessly keep-alive device comprises a keep-alive box used for keeping aquatic products alive, a temperature control module connected with the keep-alive box, a humidity control module and a gas control module, wherein the gas control module comprises an oxygen supply system and an exhaust system; the oxygen supply system comprises a gas inlet formed in one side wall of the keep-alive box; the exhaust system comprises a gas outlet formed in another side wall of the keep-alive box; the gas inlet and the gas outlet are arranged in a space diagonal manner, so that the fact that oxygen concentration in the keep-alive box meets the survival requirements of the aquatic products such as fishes, shrimps and shellfishes can be guaranteed.

The invention relates to an ammonia desulfurization and denitration type flue gas purification system, belongs to the technical field of flue gas treatment and environment equipment. More specifically, the system takes ammonia as an absorbent for absorbing SO2 and NOx in flue gas from an absorption tower; oxygen is introduced for oxidizing, wherein ammonium sulfite is oxidized into ammonium sulfate; the NOx which is difficult to oxidize in a liquid phase reacts with the oxygen in a gas phase through analysis; a reaction product is also absorbed by the ammonia and is returned to the absorption tower, so that a mixed product of the ammonium sulfate and ammonium nitrate is prepared. The ammonia desulfurization and denitration type flue gas purification system has the beneficial effects that the aims of removing dust, performing desulfurization and denitration, and recycling the NOx are fulfilled; the system investment is low; the operation is stable and reliable; the resource and energy consumption is low; the NOx recovery rate is high; by-produces such as sulfur-containing and nitrate-containing products are obtained; the product value is high; the implementation effect is good; the desulfurization rate is greater than or equal to 98 percent; the denitration rate is greater than or equal to 85 percent; the NOx recovery rate is greater than or equal to 85 percent.

The invention relates to an automatic firefighting explosion-prevention system and method for a bus. The automatic firefighting explosion-prevention system is characterized by at least comprising nozzles, a firefighting bottle, a control box and an audible and visual alarm, wherein the firefighting bottle is communicated with a plurality of nozzles through pipelines; the firefighting bottle and the audible and visual alarm are electrically connected with the control box respectively; the control box is electrically connected with a plurality of detectors through internal CAN buses. Due to the adoption of the whole system, monitoring on fire hazard or explosion in a whole carriage can be achieved, a fire extinguishing agent can be sprayed into the whole carriage in all directions, automatic alarm and automatic firefighting bottle driving can be achieved, and the rapid fire fighting and explosion prevention properties of the bus can be effectively improved.

The invention discloses a process method for preparing active calcium oxide by oxygen-enriched calcination. The process method the following steps of firstly crushing and sieving raw limestone to enable the particle size of the raw limestone to be 10-55 mm, conveying the raw limestone into a stock bin with a circular cross section, wherein the stock bin is arranged at an upper part of a vertical preheater; then, uniformly conveying the raw materials in the stock bin into the vertical preheater through a blanking pipe, and preheating the raw materials by using high-temperature kiln gas and cooling gas of a vertical cooler; then, feeding the materials into a rotary kiln, and importing oxygen-enriched air from a kiln head to perform oxygen-enriched calcination; and then, feeding the calcium oxide obtained after calcination and decomposition into the vertical cooler to be cooled by air, namely, obtaining the active calcium oxide. According to the process method disclosed by the invention,through the integration of the processes of graded preheating, oxygen-enriched calcination, graded cooling, dynamic temperature monitoring and the like, and the raw materials are preheated by combining the high-temperature kiln gas and the high-temperature gas discharged from the cooler, the heat transfer efficiency of the system is greatly improved, the activity of calcium oxide is obviously improved, the energy consumption is reduced, and the energy conservation and emission reduction are realized.

The invention discloses a comfortable and breathable oxygen mask which comprises an annular air cushion, a silicone supporting ring, a cover and an annular oxygen pipe. The annular air cushion, the silicone supporting ring and the cover are sequentially and hermetically connected, the annular oxygen pipe is arranged on the inner periphery of the cover and positioned in the closed space between theface of a wearer and the cover, a plurality of air outlets are formed in the annular oxygen pipe, the annular oxygen pipe is communicated with an air inlet pipe, an air inlet of the air inlet pipe ispositioned outside the closed space formed by the cover and the face, and the cover is made of soft light breathable materials. The comfortable and breathable oxygen mask is comfortable to wear and good in air tightness and can solve the problem that an existing mask easily generates labored breathing and limits breathing. The mask is suitable for various spontaneous breathing crowds such as breathing failure patients and people with weak breathing movement.

The invention relates to a molecular screening protector, comprising an outer housing. The molecular screening protector is characterized in that one end of the upper end of the outer housing is fixedly connected with an air inlet pipe, the other end is fixedly connected with an air outlet pipe, five baffle plates are connected in the outer housing, and efficient sorbents are filled between the baffle plates. Therefore, the molecular screening protector has the advantages of simple structure, increased service life of oxygenerator and easy repair, is specially used for absorbing water or oil in the air, and is particularly suitable for a small-size oxygenerator.

The invention discloses a haze preventing and oxygen supplying mask. The mask comprises a mask body; a filter device is arranged in the mask body; the mask body is connected with an oxygen supplying slow-release device through an oxygen delivery pipe; the oxygen supplying slow-release device comprises a box body; an oxygen delivery pipe through hole is formed in the box body; a water storage chamber and a reaction reagent chamber are arranged in the box body; an air hole is formed in the water storage chamber; one end of the oxygen delivery pipe is detachably connected with the mask body; the other end of the oxygen delivery pipe penetrates through the oxygen delivery pipe through hole in the box body to be detachably connected with the air hole of the water storage chamber; the reaction reagent chamber is located above the water storage chamber; a discharging port is formed in the reaction reagent chamber; a feeding port opposite to the discharging port is formed in the water storage chamber; and an electric control gate valve is arranged between the discharging port and the feeding port. The mask is simple in structure and convenient to use, can release oxygen slowly while effectively realizing the haze preventing effect, and is applicable to crowds having outdoor activities in regions having the relatively poor air quality in life as well as crowds requiring oxygen supplementation.

The invention relates to a device for the improvement of the air quality. The device suits for a cabin with surrounding walls, which can reduce the carbon dioxide concentration in the air of the cabin and maintain the oxygen concentration. The device comprises a compressor which is provided with an air inlet and an air outlet, a heat exchanger and an air separation module which is provided with an inlet and a first outlet. The heat exchanger is communicated with the compressor; the inlet of the air separation module is communicated with the heat exchanger; wherein the air separation module is used to separate a reformed gas which is produced by the carbon dioxide and the nitrogen in the air from the compressor and the heat exchanger; the reformed gas is discharged from the first outlet of the air separation module.

The invention discloses a manufacturing method of an enthalpy wheel humidifier, which comprises the steps of putting aramid fibers, phenolic resin, pore former and curing agent into a high-speed mixer for high-speed mixing to obtain a uniform mixture, filling a mold with the mixture, putting the mold in an oven for thermocuring, conducting cooling and demolding, obtaining a porous cellular cylindrical enthalpy wheel, mounting the enthalpy wheel into a cylindrical housing, connecting to a motor through connecting shafts, and dividing the cylindrical housing into two areas with baffles. The invention further discloses the enthalpy wheel humidifier for a fuel cell, which comprises the cylindrical housing, the motor, the enthalpy wheel, the baffles and the connecting shafts. The enthalpy wheel humidifier can conduct air inflow heating and humidifying on the proton exchange membrane fuel cell more effectively, allows the proton exchange membrane fuel cell to exert performances better, and is simple in fabrication process, good in performance, lower in operating cost and long in service life.

The invention discloses a medical air disinfection and purification device, and particularly relates to the technical field of disinfection and purification devices. The medical air disinfection and purification device comprises a transverse plate and a box body, wherein moving wheels are fixedly connected to one side of the bottom end of the transverse plate, fixed wheels are fixedly connected tothe other side of the bottom end of the transverse plate, and the box body is fixedly connected to the top end of the transverse plate; and a fan is fixedly connected to one side of the box body, anair outlet is fixedly connected to the other side of the box body, a filtering structure is arranged on one side of the interior of the box body, and partition plates are arranged on the two sides ofthe filtering structure. According to the medical air disinfection and purification device, by arranging a fixing frame, a first ionization plate, an electrostatic adsorption plate and a second ionization plate, during use, the fixing frame is arranged below a sterilization mechanism, the bottom of the fixing frame is connected with the first ionization plate, the electrostatic adsorption plate and the second ionization plate, and air passes through the second ionization plate firstly and then passes through the electrostatic adsorption plate; and finally, the air is discharged outwards through the first ionization plate, secondary filtering is conducted on the mass in the air, and the high efficiency of the device is improved.

The invention discloses an oxygenation robotic fish based on jet propulsion. The oxygenation robotic fish comprises a sensing interaction module, an ascending and descending module, a power module, anoxygen concentration measurement module, a jet pump module, a robotic fish skeleton and a shell, The sensing interaction module comprises an ultrasonic sensor, a data receiver and a controller. The controller is connected with the ultrasonic sensor, the data receiver and the ascending and descending module through data lines. The jet pump module is installed in the middle of the robotic fish skeleton and comprises a driving fluid suction pipe, a working fluid suction pipe, a jet pump and a discharge pipe. Power can be provided for movement of the robotic fish while oxygenation is conducted through the jet pump; Oxygen can be accurately monitored and supplemented through cruising of the robotic fish in a net cage, and it is ensured that the oxygen concentration in the net cage meets the fish survival requirement. The oxygen concentration in water is measured actually through the oxygen concentration measurement module, oxygenation is conducted when oxygen deficit occurs, oxygenation isstopped when the oxygen concentration reaches the standard, and the breeding cost is saved.

The invention discloses a conveying system for asphalt flue gas. The conveying system for the asphalt flue gas comprises a reaction kettle device, a flue gas treatment device and a PLC. The flue gas treatment device comprises a flue gas conveying pipe for treating the asphalt flue gas discharged from the reaction kettle device and a nitrogen conveying pipe for conveying nitrogen to the flue gas conveying pipe. A flue gas inlet, a flue gas outlet and a blast hole are formed in the flue gas conveying pipe, an oxygen concentration monitor for monitoring oxygen concentration in the flue gas conveying pipe is arranged in the flue gas conveying pipe, a rupture disc is arranged on the blast hole, a nitrogen control switch is arranged on the nitrogen conveying pipe, and the oxygen concentration monitor and the nitrogen control switch are both electrically connected with the PLC. The conveying system can ensure the safety of the asphalt flue gas in the conveying process, so that the safe production of the factory is ensured, and injuries to personnel and equipment are prevented.