218results about How to "Realize self-circulation" patented technology

The invention provides a method for producing biogas through high-solid two-phase three-stage anaerobic digestion by using perishable organic wastes, which comprises the following steps: the perishable organic wastes are hydrolyzed in a hydrolysis acidogenic reactor, and a mixture obtained after hydrolysis is acidified to generate a large number of organic acid products with low molecular weight; the bottom of the hydrolysis acidogenic reactor is communicated with the bottom of a methanogenic reactor through a circulation pump and a pipeline; the top of the methanogenic reactor is communicated with the top of the hydrolysis acidogenic reactor; and the acetic acid producing reaction is carried out in the methanogenic reactor and the methane producing reaction is continuously carried out. The invention can separate the hydrolysis acidogenic process from the acetic acid and methane producing process in the anaerobic digestion process so as to prevent organic acids generated by the perishable organic wastes from inhibiting methanogenesis. The device has simple processing procedure, low cost, easy maintenance and stable and reliable performance, is suitable for anaerobic digestion treatment of various perishable organic wastes, and has highly efficient and stable biogas production capacity of the perishable organic wastes through the anaerobic digestion.

The invention discloses a processing method for recycling aluminum dross, which comprises the following steps: adding crushed limestone and catalyst to aluminum dross, thoroughly homogenizing and mixing the three materials, carrying out catalyzed calcination on the thoroughly homogenized and mixed materials in a calcination reaction furnace, and directly grinding the calcined products or grinding the calcined products after cooling, thus obtaining the calcium aluminate powder product. The processing method has a simple operational process, and can not cause new environmental pollution, thereby according with the policy for industry development. The invention recycles the aluminum dross, simultaneously reduces environmental pollution caused by the aluminum dross, improves the environmental management on surrounding areas, and also provides a reasonable and effective way to recycle waste aluminum dross. Thus, the invention has obvious economic benefits and social benefits.

The invention discloses a high-temperature superconducting low-temperature helium self-circulation cooling system. Vertical temperature and density differences of low-temperature helium in the system allow natural convective circulation to form, and the problems that the superconducting magnet used in the direct cooling manner of a small refrigerator is poor in cooling effect and the necessary application of expensive low-temperature helium pumps in forced convective circulation cooling causes high cost are solved. After the system stabilizes, operating pressure is low; the safety problem is solved. A superconducting magnet and a current lead form a whole which can be lifted in or out of magnet mounting space and which is convenient to demount, mount and change; cooling medium helium has controllable temperature, and conditions for the study on performances of high-temperature superconducting magnets at specific temperature are provided.

The invention discloses a method for reclaiming and processing oil gas, the method can lead oil gas mixture to firstly enter from the lower portion of an absorbing tower after pre-cooling through a precooler through the steps of absorbing, separating membrane, storing heat and oxygenizing, and gas reversely contacts with lean oil which is sprayed in the absorbing tower and absorbent in the process of ascending to do absorption treatment, oil product which is absorbed is directly recovered, oil gas mixture which is not absorbed gets into a membrane separator through the top of the absorbing tower, and the oil gas is separated out through permeating membrane under the action of bilateral pressure differences of membrane, which gets into an oil gas inlet of the precooler to do a next absorption cycle, air which can not permeate membrane and oil gas with little amount get into a heat-storage oxidation device, and end gas which is oxidized is emptied. The method which is utilized to reclaim oil gas has high recovery ratio, the end gas which is discharged is environmental protection, and the processing process does not utilize power equipment, which is safe and reliable. In addition, since active solid such as activated charcoal and the like are not used, therefore secondary pollution is avoided. The internal portion of the invention achieves self circulation of heat. The method for reclaiming and processing oil gas saves production cost and saves energy resource.

The invention discloses an experimental device for release accelerating research of oversaturated gas in under-dam watercourses. The experimental device comprises a circulating water pool, a variable-frequency water pump, a high-pressure reactor, a slope-variable thermostatic water bath and a grit chamber which are in sequence connection. A water outlet of the grit chamber is connected with a water inlet of the circulating water pool to form water circulation. The high-pressure reactor is connected with an oxygen supply box inputting oxygen therefor and provided with a gas regulating valve, a safety gas valve, a gas pressure gauge and a total dissolved gas determinator. A silt input box is arranged at the top of two side walls of the thermostatic water bath. A turbulence speeding device, a node model, a front total dissolved gas determinator, a rear total dissolved gas determinator, a front three-dimensional ADV (acoustic Doppler velocimetry) instrument and a rear three-dimensional ADV instrument are arranged in the thermostatic water bath. The experimental device is simple in structure, convenient to use and capable of satisfying mechanism research of oversaturated gas in under-dam watercourses in terms of water turbulence, silt, different watercourse node boundaries, water temperature and the like.

The invention discloses a transparent nozzle self-circulation device for internal cavity flowing visualization research. The transparent nozzle self-circulation device comprises a back pressure system, a gas circulation system, a temperature control system and a fuel injection system. The back pressure system comprises high-pressure nitrogen, a back pressure cavity, a gas flow control valve assembly and a first pressure transmitter. The gas circulation system comprises a filter, a gas circulation compressor, a pressure resistance gas cylinder, a gas control valve, a second pressure transmitter and an electronic control pressure stabilizer. The temperature control system comprises a temperature control unit and a heat exchanger and is used for ensuring that temperature in the back pressure cavity is constant. The fuel injection system comprises a proportion amplifying fuel injector and a proportion amplifying fuel spray nozzle. The problem that in the prior art, atomized diesel fuel blurs a sight window of the back pressure reception cavity is solved, so that further development of the experiment is facilitated. By the adoption of the proportion amplifying fuel spray nozzle, a visible experiment for internal flowing of the fuel proportion amplifying fuel spray nozzle of a diesel engine under the condition of certain back pressure is made to be possible.

The invention provides a device for producing biogas by two-phase three-section anaerobic digestion of high solids of perishable organic wastes. The device comprises a hydrolysis acid-production reactor and a methane-production reactor, wherein the two reactors are connected with each other, and the bottoms of the reactors are communicated through a circulating pump and a pipe; the hydrolysis acid-production reactor is a solid infiltration bed reactor, the top is provided with a water distributor and a spray header, the middle-upper part is provided with a feeding port, the middle-lower part is provided with a perforated plate and a discharging port, the bottom is provided with a residue-discharging port, and infiltration fillers are arranged on the upper surface of the perforated plate; and the methane-production reactor consists of a filter filler bed and a fiber filler bed, wherein the filter filler bed is arranged on the lower part of the methane-production reactor, the filter filler bed is arranged on the upper part of the methane-production reactor, filter fillers are arranged in the filter bed, a fiber filler frame is arranged in the fiber filler bed, and the fiber filler frame is wound by fiber fillers. The device has the advantages of simple processing procedures, low cost, easy maintenance, stable and reliable performance and suitability for the anaerobic digestion treatment of various perishable organic wastes, and has the capability of producing the biogas in high efficiency and stably by the anaerobic digestion of perishable organic wastes.

The invention relates to a fish functional ethology device which comprises a round water tank; the inner part of the round water tank is separated into a plurality of swimming lanes; the bottom of the round water tank is provided with a water outlet hole; an annular water pipe is erected on the inner wall of the round water tank; the water inlet of the annular water pipe is communicated with the water outlet pipe of a circulated frequency conversion water pump; the water outlet of the annular water pipe is communicated with a vertical water pipe outside the tank; the annular water pipe is provided with a plurality of water outlets; each water outlet is externally connected with a branch water outlet pipe; the pipe wall of the branch water outlet pipe is uniformly provided with a plurality of small holes which are transversely arranged and matched with each swimming lane; the upper edge of each detachable annular partition board is provided with a plurality of triangle-shaped water discharge opening; and the annular pipe is provided with a light belt for providing uniform light. The fish functional ethology device can meet the demand of the behavioral research of various types of fish; various types of ethology experiments are carried out, and the device is suitable for different sizes of fish to realize automatic circulation of water current; and the device saves manpower and financial resources, and the integral utilization efficiency is high.

The invention discloses an efficient two-phase anaerobic fermentation device. The efficient two-phase anaerobic fermentation device comprises a hydrolysis acid production reactor, a high-temperature hydrolysis device and at least one methanogenesis reactor, wherein a bottom percolate storage chamber of the hydrolysis acid production reactor is connected with the bottom of the methanogenesis reactor; the lower part of the hydrolysis acid production reactor is provided with a cavity stainless cone-shaped bracket with holes; the bottom of the cone-shaped bracket is connected with the high-temperature hydrolysis device; the methanogenesis reactor is provided with an upper discharge hole and a lower discharge hole; the upper discharge hole and a feed inlet form a self-circulation pipeline; the lower discharge hole of the hydrolysis acid production reactor is connected with a rotary sprayer; the high-temperature hydrolysis device is used for receiving large particle solid separated by the cone-shaped bracket; and solid-liquid separation is carried out by a biogas residue press filter at the outlet. The device is simple in manufacturing procedure, reasonable in structure, easy in maintenance, high in fermentation efficiency and stable and reliable in performance, is suitable for anaerobic digestion of organic wastes, and meets the large-scale production requirement.

The invention discloses a 35kV switch cabinet dehumidifying device based on adsorption rotary-wheel dehumidification. The 35kV switch cabinet dehumidifying device comprises a dehumidifying device shell, wherein a display panel is arranged on the upper surface of the dehumidifying device shell, a gas inlet end is arranged at one end of the dehumidifying device shell, a gas outlet end is arranged at the other side of the dehumidifying device shell, the gas inlet end and the gas outlet end are respectively communicated with a 35kV switch cabinet by means of pipelines to form a circulating loop, an adsorption rotary wheel is arranged in the dehumidifying device shell, and divided into a moisture adsorbing region and a regenerating region, the moisture adsorbing region and the regenerating region are alternatively converted under the rotation of the adsorbing rotary wheel, one side of the moisture adsorbing region is positioned at the gas inlet end, a processing fan is arranged at the other side of the moisture adsorbing region, an air outlet end of the processing fan is communicated with the gas outlet end, a regenerating fan is arranged at one side of the regenerating region, and a heater is arranged at the other side of the regenerating region. According to the 35kV switch cabinet dehumidifying device, self circulation and dehumidification of air in a switch cabinet are realized, the humidity of air in the switch cabinet is reduced, explosion accidents are effectively prevented, and good application prospect is obtained.

The invention relates to a device for experimenting dissolved gas oversaturation in high-dam leakage current, in particular to a device for experimenting a dissolved oxygen saturation threshold of damaging fishes. The device is provided with a gas supply machine and a water supply tank, wherein the water supply tank is internally provided with an electrochemical probe for providing testing of dissolved oxygen saturation and displaying dissolved oxygen saturation; the gas supply machine can be used for aerating oxygen with a certain saturation to the water supply tank through a gas supply pipeand a gas supply valve; a circular sealed water tank can be divided into a plurality of swimming channels by detachable annular baffle plates, and the cyclic utilization of water can be realized by using a cyclic variable-frequency water pump and an annular water pipe mounted on the internal wall of the circular sealed water tank. According to the invention, the device for experimenting dissolvedthe oxygen saturation threshold value of damaging different kinds and body types of fishes has the advantages of aerating oxygen in a high-pressure water tank by using the gas supply machine, increasing the dissolved oxygen saturation, combining the certification criteria of fish body damage severities and the monitored dissolved oxygen saturation, saving the man power and the financial resourcesand being high the integral utilization efficiency.

The invention provides a method for comprehensively cleaning excrement and sewage in ranch type dry-excrement-collection dairy farm with more than 3000 livestock on hand. The method comprises a dry-excrement-collection processing technology of solid excrement; solid and liquid of the sewage are separated from each other after the sewage passing through a regulating pool, and the liquid enters a homogenizing pool; anaerobic reaction of the sewage is carried out in a USR (Upflow Solid Reactor) or a UASB (Upflow Anaerobic Sludge Blanket) reactor, and produced methane is purified and stored for use; aeration treatment of the sewage is carried out in an aerobic tank; the sewage after being processed is used in planting industries or is backwashed to milking parlours. The method for comprehensively cleaning the excrement and the sewage integrates separate collection and separate treatment of the excrement and the sewage, has seasonal adaptability and a certain storing and deeply purifying capability, and realizes combination of planting and breeding.

The invention relates to a wave-driven ocean temperature differential power generation platform. Array-parallel float-type pistons absorb ocean waves that move up and down to drive the shallow and deep seawater of the ocean to realize circulation flow in the platform; the shallow and deep seawater of the ocean flows through a cold seawater diffusion chamber and a hot seawater heat dissipation chamber of a temperature differential power generation system to respectively serve as a cold source and a heat source for temperature differential power generation, and a semiconductor temperature differential power generation chip array formed by series connection is triggered to generate power, and a power generation process is finally realized. The semiconductor temperature differential power generation chip array is formed by sequentially connecting the heads and tails of a plurality of sets of P, N-type semiconductors in series through upper and lower connecting copper sheets, wherein the upper and lower connecting copper sheets are respectively connected with upper and lower heat dissipation support plates. According to the scheme of the invention, the ocean wave energy can be effectively utilized as a power source of the power generation platform, the hot and cold seawater is used as the heat source and the cold source and is combined with a temperature differential semiconductor array to generate power, so that the loss of the own energy in a traditional turbine-type temperature differential power generation process can be effectively avoided, and the efficiency of power generation can be improved.

The invention relates to a system for purifying and refining coal-bed gas, and the system for purifying and refining the coal-bed gas is used for solving the problems of high cost, high energy consumption and adversity to environmental protection of the existing coal-bed gas purification process. The system comprises a purification system, a pressurization and refrigeration system and a cryogenic distillation system; the purification system comprises a filter, a compressor, a washing tower and an adsorption system which are sequentially connected with one another; the pressurization and refrigeration system comprises a supercharger and a high-pressure heat exchanger; the cryogenic distillation system comprises a separator, a subcooler, a throttle valve and a cryogenic distillation tower; and the adsorption system is sequentially connected with the supercharger, the high-pressure heat exchanger, the separator, the throttle valve and the cryogenic distillation tower. The system for purifying and refining the coal-bed gas has the advantages of simple equipment, simplification of production process, more simplicity and convenience in system control, low cost for equipment investment and operation, short production period and high recovery ratio and purity of produced finished natural gas products, is applicable to coal-bed gases with different methane contents and has broad market application prospect.

The invention provides an anaerobic-aerobic bio-filter coupled sewage processing device and a sewage processing method. The device comprises an anaerobic bio-filter, which is filled with an anaerobic filler layer that is covered by a bio-membrane containing anaerobic ammonia oxidation bacteria, anaerobic methanation bacteria, and denitrifying bacteria; an aerobic bio-filter, which is filled with an aerobic filler layer that is covered by a bio-membrane containing aerobic ammonia oxidation bacteria and nitrifying bacteria; an aeration device, which is arranged on the bottom of the aerobic bio-filter; a passive internal circulation device, which is arranged on the top of the aerobic bio-filter; and a backwater device, which comprises a backwater pipe and a backwater pump. The provided technical scheme couples the ammonia oxidization bacteria, methanation bacteria and denitrifying bacteria into a water treatment system, the methanation, ammonia oxidation, short-cut nitrification, and denitrification can be achieved synchronously, and thus the problems that in the biomembrane method, the contact efficiency between bacteria and sewage is low and the denitrification efficiency is low are solved effectively.

The invention relates to a self circulation array pipe reaction device with an efficient mixer and a reaction method using the same. The material mixing problem is solved through the arrangement of anefficient mixer and a circulation pump. The heat transfer problem and the reaction flux problem can be effectively solved in time through installing an array pipe reactor and controlling the circulation quantity. The reaction device provided by the invention has the advantages that the heat transfer effect is good; the material mixing is uniform; the continuous and automatic reaction can be realized. The reaction method using the reaction device provided by the invention has the advantages that the operation is simple; the reaction efficiency is high; the heat transfer effect is good; side reactions are few; the reaction flux is great.

The invention relates to a preparation method of sludge-straw composite biomass activated carbon, which comprises the following steps (1) sufficiently mixing and kneading municipal sludge as a main raw material, agricultural waste as an auxiliary material and wood tar as a binder, granulating, and drying to obtain sludge-straw composite particles, (2) feeding the sludge-straw composite particles into a carbonization furnace, carbonizing and activating at the same time under an oxygen-free or oxygen-limited condition to obtain a product sludge-based biomass activated carbon and pyrolysis gas, cooling the sludge-based biomass activated carbon, and packaging the cooled sludge-based biomass activated carbon, and (3) performing dust removal and purification on the pyrolysis gas to obtain wood tar, wood vinegar and non-condensable gas, returning the non-condensable gas as fuel to the carbonization furnace, returning a part of the wood vinegar as an activating agent to be sprayed into the carbonization furnace, and recycling the wood tar as a granulation raw material. The activated carbon is prepared from the sludge and the agricultural straw, the preparation method is simple, the price is relatively low, good economic benefits and ecological benefits are achieved, and high market competitiveness and popularization value are achieved.

The invention relates to a method for the in-situ production of solvent in an oil layer to exploit thickened oil. The method includes the steps that crude oil in the oil layer near a shaft is heated to a target temperature by using an electric heating device, a chemical reaction assistant is injected into a heating section to achieve the reaction condition of high-temperature hydrothermal crackingof the crude oil, light oil components and gas generated move upwards to a vapor cavity under the action of heating power and gravity, and the light oil and part of gas transferred to a vapor-liquidinterface are dissolved into the crude oil to reduce the viscosity of the crude oil and increase the yield of the crude oil; non-condensed gas left in the vapor cavity is used for expanding and supplementing energy for the vapor cavity, so that the heat loss of the vapor cavity to a top cover layer is reduced; and the crude oil discharged to a cracking reaction section is heated and then continuesto be cracked, and the crude oil discharged to a production section enters into a screen pipe and then is lifted to the ground through an underground pump. According to the method for the in-situ production of the solvent in the oil layer to exploit the thickened oil, the solvent is generated in the oil layer in situ to achieve solvent-assisted thickened oil recovery, so that the heat utilizationrate is increased, the CO2 emission is reduced, the final recovery ratio is increased, and the method has wide market application prospects.

The invention utilizes a flat plate photobioreactor integrating a fuel battery to integrate microalgae high-density culture and irradiation hydrogen production so as to form an integrative hydrogen production system. Two sections of processes of microalgae culture and photosynthetic hydrogen production are generally divided in space time, and the cultured low-density frustule needs to be concentrated and then irradiated to produce hydrogen, so that the operations need to be respectively carried out in two photobioreactors. In the microalgae hydrogen production of the invention, the low-density microalgae is inoculated into a reactor, a culture mode of enriching carbon dioxide is utilized, the biomass required by the hydrogen production can be reached by short-term culture, then dark induction is carried out, and the operation can enter a continuous irradiation hydrogen production stage. The generated hydrogen gas can be integrated into a fuel battery on a reactor and is converted into electric energy, and the hydrogen production condition can be monitored at real time by the change of current. The invention combines the two sections of processes of the microalgae culture and the hydrogen production for the first time, utilizes the fuel battery to convert the hydrogen into the electric energy and provides reliable technical support for the large-scale microalgae hydrogen production.

The invention discloses a zero-emission biological toilet. The toilet comprises a toilet flushing device, a toilet platform and an excrement treatment system, wherein a pedestal pan is arranged on thetoilet platform; the toilet flushing device is used for flushing the pedestal pan, the excrement treatment system is arranged below the toilet platform and communicated with a pedestal pan sewer pipe, and a biological digestion agent is arranged in the excrement treatment system. The toilet is characterized by further comprising a biological waste management system, the excrement treatment systemcomprises an excrement treatment box and a biological stirring device arranged in the excrement treatment box, a biological waste outlet is formed in the side face of the excrement treatment box, andthe excrement treatment system is communicated with the biological waste management system through the biological waste outlet; the excrement treatment system and the biological waste management system are arranged in a box body. According to the toilet, excrement is decomposed and digested through the biological digestion agent, environmental pollution caused by secondary emission is reduced, the excrement decomposition speed is high, biological waste is collected mechanically, and the labor force is reduced.

The invention relates to a multifunctional high flow velocity intelligent open channel experiment system, which is used to acquire high flow velocity and monitor a water level in a remote way. The multifunctional high flow velocity intelligent open channel experiment system comprises an open channel high velocity experiment device, an adjustable section device, and a wireless intelligent water level monitoring system. The multifunctional high flow velocity intelligent open channel experiment system is advantageous in that the high flow velocity, a section width, and an adjustable water depth can be acquired on an experiment water channel segment, and a water level of a reservoir is monitored wirelessly and adjusted intelligently, and therefore important scientific significance and a practical application value are provided for scientific research working in a field of fluid mechanics such as the acquisition of the flow regime of the different sections, for example, the flow velocities and the water depths.

The invention discloses a methanol fuel gasification stove which comprises an ignition device, a heating device, a gas distributing chamber, a gas producing chamber, a fuel tube, a pressurizing tube, a gas feeding pipe and a methanol storage device. Because the heating device is arranged in the gas distributing chamber, a liquid methanol fuel in the gas producing chamber is directly heated into a gas state by the heating device, the liquid methanol fuel is pre-heated so that the problem of insufficient combustion caused by direct heating of liquid methanol is prevented, and the burn-off rate is increased. Because the gaseous methanol fuel is supplied to the gas distributing chamber through the gas feeding pipe, the methanol fuel can directly enter the gas distributing chamber after being gasified, and the use of an air blower or a pressure container is reduced to a certain extent. Because the gas producing chamber is further connected with the pressurizing pipe, and the gaseous methanol fuel is conveyed to the methanol storage device through the pressurizing pipe to gradually fill a space occupied by the outflowing liquid methanol fuel and then extrude remained liquid methanol fuel to continuously flow into the fuel tube, so that the self circulation of combustion is further realized.

The present invention discloses a ketone-benzene dewaxing apparatus capable of reducing a deoiling fresh solvent. The ketone-benzene dewaxing apparatus comprises a heat exchanger unit, a dewaxing unit, a primary deoiling unit, a secondary deoiling unit and a raw material oil pumping-into heat exchanger unit, wherein the units are sequentially connected. The ketone-benzene dewaxing apparatus is further added with a first segment deoiling filtrate self-circulation pipeline and a second segment deoiling filtrate self-circulation pipeline, wherein a pipeline is led out from a pumping-out port of a first segment deoiling filtrate pump, and is introduced to a dewaxing wax tank so as to be adopted as a first segment deoiling filtrate self-circulation flow process, and a pipeline is led out from a pumping-out port of a second segment deoiling filtrate pump, and is introduced to the first segment dewaxing wax tank so as to be adopted as a second segment deoiling filtrate self-circulation flow process. According to the present invention, with the first segment deoiling filtrate self-circulation, the use amount of the second segment deoiling filtrate adopted as the first segment deoiling dilution solvent is reduced so as to provide assurance for the second segment deoiling filtrate self-circulation and ensure material balance; and with the second segment deoiling filtrate self-circulation, the use amount of the second segment deoiling fresh dilution solvent is reduced so as to reduce a fresh solvent circulation amount of the apparatus, reduce energy consumption, and provide advantages of low fresh solvent ratio and low load on the recovery system.

The invention discloses a processing method for recycling aluminum dross, which comprises the following steps: adding crushed limestone and catalyst to aluminum dross, thoroughly homogenizing and mixing the three materials, carrying out catalyzed calcination on the thoroughly homogenized and mixed materials in a calcination reaction furnace, and directly grinding the calcined products or grindingthe calcined products after cooling, thus obtaining the calcium aluminate powder product. The processing method has a simple operational process, and can not cause new environmental pollution, thereby according with the policy for industry development. The invention recycles the aluminum dross, simultaneously reduces environmental pollution caused by the aluminum dross, improves the environmentalmanagement on surrounding areas, and also provides a reasonable and effective way to recycle waste aluminum dross. Thus, the invention has obvious economic benefits and social benefits.

The invention discloses a self-circulation vertical speed changer, which comprises a box body, an oil pump and an input shaft arranged in the box body. An oil pumping pipe and an oil outlet pipe are arranged on the oil pump. The bottom end of the oil pumping pipe is connected to a lower part in the box body, and the top end of the oil pumping pipe is connected with the oil pump. The bottom end of the oil outlet pipe is connected with the oil pump, and the top end of the oil outlet pipe is connected to an upper part in the box body. The self-circulation vertical speed changer is simple and compact in structure and long in service life; and oil on the lower part of the box body is pumped to the upper part of the box body through the oil pump to realize the self circulation of oil supply, so that all gears and bearings of the speed changers can be lubricated.

The invention provides a heat radiation bipolar plate for a fuel battery and belongs to the field of heat control. The heat radiation bipolar plate comprises an oxygen plate and a hydrogen plate, wherein the oxygen plate and the hydrogen plate are buckled to form a hollow structure and are used for storing phase change mediums and radiating heat through phase changes; both the oxygen plate and thehydrogen plate comprise working parts and cooling parts; oxygen distribution runners are arranged on outer surfaces of the working parts of the oxygen plates; hydrogen distribution runners are arranged on outer surfaces of the working parts of the hydrogen plates; insulating coatings are arranged on outer surfaces of the cooling parts and are used for radiating heat outside; phase change medium runners are arranged in the hollow structure. Due to self-circulation cooling of a phase-change medium, the problems that the structure is complex, poor in reliability, and the like because of circulation water cooling, are avoided, and the system reliability is improved.

The invention provides a nitrous oxide preparation device and method.The nitrous oxide preparation device comprises a reaction separator, a heating reactor and a condensation collection unit, a loweroutlet of the reaction separator is connected with a lower inlet of the heating reactor, and an upper outlet of the heating reactor is connected with a middle inlet of the reaction separator; an upperoutlet of the reaction separator is connected with an inlet of the condensation collection unit; a spraying assembly and a filler assembly are arranged at the upper part in the reaction separator; and the position of the reaction separator is higher than that of the heating reactor. According to the device, through the arrangement of the reaction separator and the heating reactor, self-circulation of reaction materials between the reaction separator and the heating reactor is achieved, the liquidity of ammonium nitrate raw materials is improved, the temperature of all positions is kept uniform, accurate control over the temperature of the reaction materials is facilitated, and meanwhile the heat exchange efficiency and the reaction rate are improved; due to the improvement of the device,the device can continuously and stably operate, the safety is greatly improved, and efficient preparation of nitrous oxide is realized.

The invention discloses a cooling piece for a circuit board and a display panel employing the cooling piece. The cooling piece for the circuit board comprises a cooling piece body, wherein the coolingpiece body is provided with a plurality of cooling cavities which are arranged at intervals, the cooling cavities are used for accommodating a working medium, arbitrary one of the plurality of cooling pieces communicates with at least one of the remaining cooling cavities by a flowing passage, and each cooling cavity is provided with a condensation end and an evaporation end. According to the cooling piece for the circuit board, disclosed by the embodiment of the invention, no any circulation device is needed to be connected, the package flow of a chip is not affected, production and application are facilitated, self circulation of a refrigerating agent can be achieved without testing the heating state of each chip, and self-matching and self-balancing of cooling effects of different chips can be achieved.

The invention discloses a multifunctional green building with a natural circulation floor heating function and an indoor ventilation function. The multifunctional green building comprises a terrestrial heat circulation system and a hot air circulation system. The terrestrial heat circulation system comprises a solar panel, a heat collection water tank, a steam separator, a water supplementation tank and a capillary network. The hot air circulation system comprises a heat storage wall arranged on the face exposed to the sun, wherein the heat storage wall is used for replacing a traditional wall. A glass wall is installed on the outer side of the heat storage wall and a certain distance is formed between the glass wall and the heat storage wall. According to the multifunctional green building with the natural circulation floor heating function and the indoor ventilation function, after solar energy is converted into heat energy through the terrestrial heat circulation, self-circulation of heat is achieved by sufficiently using gravitational potential energy and siphonage, and the multifunctional green building is more environment-friendly; and meanwhile, the hot air circulation is set in an auxiliary manner, indoor air circulation is achieved according to the principle that hot air rises and cold air falls, hot air can enter indoor portions in winter, the room temperature rises, ventilation cooling can be achieved in summer, and human bodies can feel more comfortable.

The invention discloses a self-circulating device. The self-circulating device is connected to a circulation loop of a water heater and comprises a water inlet pipe, a water outlet pipe, a circulating pipe, a first temperature sensor and a second temperature sensor, wherein the water inlet pipe is connected with a water return pipe of the circulation loop in series, the water outlet pipe is connected with a hot water outlet pipe of the circulation loop in series, a waterway switching device is arranged on the water inlet pipe, one end of the circulating pipe is connected with the waterway switching device, the other end of the circulating pipe is connected with the water outlet pipe, the first temperature sensor is arranged on the water inlet pipe, the second temperature sensor is arranged on the water outlet pipe, and the water inlet pipe is conducted with one of the water heater and the circulating pipe by the waterway switching device. According to the self-circulating device, whether water in the circulation loop needs to be heated can be selected, self circulation of hot water can be realized, and when the temperature meets the showering requirement, the water heater is not needed to heat, so that the uniformity of the hot water is guaranteed, and the hot and cold phenomena of water are effectively avoided.