73results about How to "Fully ionized" patented technology

The invention discloses low-temperature sintered hybrid conductive silver paste for chip package and a preparation method thereof. The low-temperature sintered hybrid conductive silver paste comprises 50-95wt% of conductive silver powders and 5-50wt% of organic carrier. The conductive silver powders contain 20-60wt% of micrometer-scale flake silver powders, 5-40wt% of submicron-scale spherical silver powders and 20-60 wt% of nano-scale spherical silver powders. The organic carrier contains 3 to 30 wt% of binder, 40 to 97.9 wt% of solvent and 0.01 to 30 wt% of other additives. The surface modification of the micron-scale silver powders and the submicron-scale silver powders can adapt the decomposition temperature of a modified surface dispersant to that of a water-based ionic dispersant of such type, so as to realize the low-temperature sintering of hybrid silver paste.

The invention discloses a dust-removing air purifier with double functions of anion sedimentation and high-voltage electrostatic adsorption. The dust-removing air purifier comprises a casing as well as an anion emission needle plate, a stacked high-voltage electrostatic cell, a positive pole filtering body and a fan which are sequentially arranged, wherein anion emission needles which discharge towards the positive pole filtering body and form potential difference with the positive pole filtering body are arranged on the anion emission needle plate, the stacked high-voltage electrostatic cell comprises negative plates and positive plates, an air channel is formed between each negative plate and the adjacent positive plate, each negative plate comprises two insulators with high resistance and high voltage resistance and a conductor which is located between the two insulators and has low resistance, and the positive plates have electrical conductivity and can lead out charges carried by electronegative particles directly contacted with the positive plates in the air channels. According to the dust-removing air purifier, the wind resistance is low, the use noise is small, frequent cleaning is not required, single air purification efficiency is high, bacteria and viruses in air can be killed, the problems about wall blackening and influence on human health are solved, and secondary pollution caused by starting up is avoided.

Belonging to the technical field of wastewater treatment, the invention relates to a low temperature plasma wastewater treatment device by radial-flow dielectric barrier discharge. The low temperature plasma wastewater treatment device by radial-flow dielectric barrier discharge comprises a power supply, a high-pressure electrode and a grounding electrode, and a dielectric layer disposed on the lower surface of the high-pressure electrode. The device is characterized by additionally including a reactor composed of a reaction cylinder that is a hollow column structure with an open end and a closed end, an overflow recoverer positioned on the outer wall of the reaction cylinder for recovering the wastewater flowing out of the open end of the reaction cylinder, a wastewater inlet and a wastewater outlet. Moreover, the high-pressure electrode is located over the open end of the reaction cylinder, the grounding electrode is arranged within the reaction cylinder, the wastewater inlet is mounted at the center of a horizontal cross-section in the reaction cylinder, and the wastewater outlet is installed at the bottom of the overflow recoverer. Able to generate low temperature plasmas of large volume and high energy concentration in a wide air pressure range, the wastewater treatment device of the invention can effectively degrade pesticide wastewater containing such as nitenpyram.

The invention relates to a variable cross-section channel structure of a low-power cusp magnetic field plasma thruster, which relates to the field of cusp magnetic field plasma thrusters. The present invention aims to solve the problem that under the low power working condition of the existing tangential magnetic field plasma thruster, the insufficient ionization leads to performance degradation when the current density is low, and the performance degradation is also caused by the intensified interaction between the plasma and the wall surface when the current density is high. The problem. The channel is constructed by a ceramic channel and a permanent magnet. The ceramic channel is a one-piece structure, which is divided into two sections: the upstream part of the channel and the downstream part of the channel. The channel structure gradually expands from the upstream part of the channel to the downstream part of the channel. The outer wall of the ceramic channel is used for To achieve clearance fit with the inner wall of the permanent magnet. This structure increases the atomic density and ionization rate in the upstream ionization area, and at the same time reduces the interaction with the channel wall during the accelerated ejection of ions generated by ionization, prolonging the life of the thruster. It is used in the low power working condition of the tangent magnetic field plasma thruster.

An energy conversion device for generating electricity includes a heat exchanger adapted to receive heat from a heat source. A closed magnetohydrodynamic (MHD) circuit includes a section for extracting heat from a heat exchanger so as to raise the temperature of the flowable electrically conductive material within the MHD circuit. The heat exchanger includes a heat-conductive support adapted to be heated, and a heat-extracting section of the MHD circuit extracts heat from the support. The support may be a metal plate having a sinuous pipe arrangement in heat-conductive contact against each face, one of these pipe arrangements being part of a circuit for heating the plate and the other pipe arrangement being part of the MHD circuit. The heat source may be combustion of a fuel, solar, geothermal, chemical reaction, or waste heat in the form of a hot gas. The heat conductive support may be a metal tube heated, usually by a hot gas, in which case the heat-extracting section of the MHD circuit includes a helical pipe surrounding the tube. The heat-providing means may include a lens arrangement for concentrating solar radiation on one face of the heat exchanger plate.

The invention discloses a mass spectrum ionization source and belongs to the technical field of mass spectrum ion sources. The mass spectrum ionization source is designed in order to solve the problems that the detection range of an existing ion source ionization source is limited and ionization efficiency is low. The mass spectrum ionization source comprises a sample injection device, a repelling electrode and a dielectric barrier discharge device; liquid or gas samples enter a tee nozzle through a sample injection tube of the sample injection device, and the liquid samples with solvent removed are sprayed out from the lead-out end of the tee nozzle along with carrier gas or the gas samples are sprayed out from the lead-out end of the tee nozzle; reaction gas enters an insulation dielectric cavity through a gas guide tube of the dielectric barrier discharge device, and low-temperature plasma is generated under the action of a discharge electrode and sprayed out from the lead-out end of the insulation dielectric cavity; the low-temperature plasma and the liquid or gas samples converge on a mass spectrum opening in a backflow mode, ionized sample molecules are formed, and the molecules converge to the mass spectrum opening under the action of the repelling electrode. According to the mass spectrum ionization source, not only is the detection range of the ionization source widened, but also the ionization efficiency and the detection sensitivity of an instrument are improved.

The invention discloses a method for growing nanocrystalline silicon powder. The method comprises the following steps: introducing gas mixture into a reaction chamber from gas inlet pipelines; inputting radio frequency alternating current into electrodes which are vertically arranged by a radio frequency source to cause working gases to discharge to form a plasma zone between quartz plates; enabling reactive gases to be decomposed by plasmas in the plasma zone, and enabling fragments obtained after decomposition to form nanocrystalline silicon cores; controlling the time spent on flowing through the plasma zone by the reactive gases by adjusting the flow of the introduced gases and/or adjusting the pressure of the reaction chamber, and controlling the sizes of the grown nanocrystalline silicon particles by controlling the retention time; and enabling the nanocrystalline silicon particles to stop growing after flowing out of the plasma zone along with airflow, and carrying out collection on a connection net to obtain the nanocrystalline silicon powder with uniformly distributed particle sizes. The method disclosed by the invention is simple to operate, has lower requirements for temperature, dispenses with heating devices, can be used for producing nanocrystalline silicon powder with uniformly distributed and controllable particle sizes, and can realize industrial production.

The invention discloses an electric coagulation spray dust removal system which comprises a tower. A gas inlet pipe is connected to the bottom of the tower, an exhaust pipe is correspondingly connected to the top of the tower, an electric coagulation device with an alternating electric field is mounted on the gas inlet pipe, a high-pressure dust remover with a static electric field is mounted in the tower and is positioned above the gas inlet pipe, a plurality of sprayers are mounted above the high-pressure dust remover with the static electric field and are connected with an absorption liquid pipeline, a valve is arranged on the absorption liquid pipeline and is connected with an absorption liquid delivery pump, the absorption liquid delivery pump is connected with an absorption liquid distribution pond by a pipeline, a demister is mounted above the sprayers, and a liquid outlet is formed in the bottom of the tower. The electric coagulation spray dust removal system has the advantages that the purpose of synchronously removing fine particulate matters such as PM (particulate matter) 2.5 particulate matters in coal-fired flue gas can be achieved by the electric coagulation spray dust removal system, and the electric coagulation spray dust removal system is good in dust removal effect and low in cost.

The invention relates to a plurality of molecule components included in a gas are to be ionized at the same time by PI method. For instance, a plurality of molecule components included in a gas generated at a certain instance are accurately analyzed in real time based on PI method. A gas analyzer is provided with a gas transfer apparatus for transferring a gas generated from a sample in a sample chamber to an analyzing chamber; an ionizer for ionizing the gas; a quadruple filter for separating ions by mass/charge ratio; and an ion detector for detecting the separated ions. The ionizer is provided with an ionizing region arranged in the vicinity of a gas exhaust of the gas transfer apparatus, and a lamp for applying light on the ionizing region. Since the lamp outputs light which has light directivity lower than that of a laser beam and travels by spreading, the gas entered the ionizing region in the ionizer receives light in a wide range, and the gas components inside are ionized at the same time.

The invention discloses a multifunctional warming and refrigerating air sterilization device. The device comprises a body shell, an air heater, an air refrigerator, a sterilization device body, a control device and an air circulator. A filtering device is arranged at the bottom of the multifunctional warming and refrigerating air sterilization device, an induced draught fan is arranged inside the filtering device and used for inducing indoor air into the air sterilization device body for primarily filtering and absorbing bacteria, impurities and harmful gas, the air entering the sterilization device body is sterilized through a high-voltage pulse disinfection device and a photocatalyst catalyzing sterilization and disinfection device, and the harmful gas, the bacteria and viruses are sufficiently ionized and killed. The air heater and the air refrigerator are connected with the sterilization device body, and therefore different temperatures can be selected according to needs. After the air sterilization device sterilizes the indoor air according to the requirement, the air circulator is started and connected with an air inlet, the indoor air is effectively filtered through the filtering device, and then external air is discharged into the interior.

The invention relates to a plasma reaction cavity seepage detection method. The seepage situation of a plasma reaction cavity under detection is obtained according to the content of each type of gas in a normal plasma reaction cavity corresponding to a matched spectrum curve so that detection is accurate, the causes of seepage of the plasma reaction cavity under detection can be speculated according to the content of each type of gas in the plasma reaction cavity under detection, and thus seepage can be timely eliminated.

The invention discloses a plasma treatment device which comprises a vacuum chamber and plasma generating assemblies. Each plasma generating assembly comprises a plasma generating cavity, an electrode module, a microwave plasma excitation source and a gas conveying pipeline, wherein the plasma generating cavity is formed in the chamber wall of the vacuum chamber, the electrode module is arranged inside the plasma generating cavity, an electro-discharge end of the electrode module faces right towards the inside of the vacuum chamber, and the electrode module is composed of multiple tubular electrodes which are arranged in a parallel matrix mode. The microwave plasma excitation sources are in electric connection with the electrode modules, each gas conveying pipeline is communicated with one plasma generating cavity from one side wall of the plasma generating cavity. According to the plasma treatment device, when gas flows inside the plasma generating cavities, the gas is blocked by the side walls of the plasma generating cavities and then turns to enter the vacuum chamber. In the flowing process, the flow rate of the gas is reduced, and the gas is fully ionized; the gas is mixed to form turbulent flow, and therefore plasma in the gas is enabled to be mixed uniformly. The gas passes through the plasma generating assemblies to form uniform plasma gas which is used for carrying out plasma treatment on products, and therefore the treatment effect is good.

The invention discloses a method for measuring phthalates (PAEs) in flavors and fragrances for tobaccos. The method comprises the following steps: dispersing and initially extracting samples with an aqueous ethanol solution at a certain concentration; then using a mixed solvent of n-hexane/ethyl acetate/isopropanol at a certain ratio for liquid-liquid extraction of an initial extract; directly sampling supernatant for analysis after layering through liquid-liquid extraction. The method provided by the invention can disperse most flavor and fragrance samples well in the initial extraction step,and uses the mixed solvent of n-hexane/ethyl acetate/isopropanol for the liquid-liquid extraction of the initial extract to not only purify the initial extract, but also make a recovery rate of 18 PAEs reach 90% or higher. The method uses fewer glass instruments, uses an internal standard method to further simplify a solution transfer step and greatly reduce probability of contamination during pretreatment, and is suitable for measuring mass samples.

The invention discloses an ionization chamber of a photoionization gas detecting instrument based on a printed circuit board process, which is formed by placing two electrode plates which are the same completely in an overlapped way. The thickness of the ionization chamber of the photoionization gas detecting instrument based on the printed circuit board process is the sum of the thicknesses of the two electrode plates; each electrode plate comprises three welding pads; the three welding pads are respectively provided with a first through hole, a second through hole and a third through hole; the back surfaces of the two electrode plates are in contact with each other; the two electrode plates are mechanically fixed and electrically connected by respectively placing one contact pin in the first through hole, the second through hole and the third through hole; one contact pin is connected with an offset electrode; another contact pin is connected with a collecting electrode; and the third contact pin is grounded. By using the ionization chamber of the photoionization gas detecting instrument based on the printed circuit board process, a small enough volume is guaranteed, and an enough optical path length is also ensured, so that the gas entering the ionization chamber is adequately ionized.

The invention provides an electrostatic precipitator and preparation method thereof. The electrostatic precipitator comprises an electrostatic ionization unit (1) and an electrostatic precipitation unit (2), wherein the electrostatic precipitation unit (2) comprises a precipitation electrode (5) and a precipitation ground electrode (6) which are composed of wave shape or W-shaped metal plates which are parallel to each other, and the surfaces are coated with TiO2 films (7). According to the structure of the electrostatic precipitator, small particles are condensed, and the precipitation efficiency is obviously improved; the TiO2 films (7) coated on the surfaces function to protect the metal plates from corrosion, and are easy to clean after precipitation. The air purifier has the advantages of being small in air resistance, little in ozone generation, long in service life, easy to clean and maintain and the like.

The invention discloses an electrochemical device for testing the reduction performance of carbon dioxide, and relates to the technical field of electrochemical reduction of carbon dioxide, in particular to an electrochemical device for testing the reduction performance of carbon dioxide, which comprises a base, the bottom of the base is fixedly connected with uniformly distributed brackets, and the bottom ends of the brackets are fixedly connected with a base; the top of the base is movably connected with symmetrically-distributed containing boxes, and the outer sides of the containing boxesare fixedly connected with liquid discharging pipes. According to the electrochemical device for testing the reduction performance of the carbon dioxide, the high-pressure outer cylinder is fixedly connected to the exterior of the positioning chassis, the cylindrical hole is formed in the high-pressure outer cylinder, the overall thickness of the high-pressure outer cylinder is increased to be 3 cm, and meanwhile the air pressure valve is fixedly connected to the exterior of the high-pressure outer cylinder; the air pressure can be balanced through the overall thickness of the high-pressure outer cylinder and the air pressure valve, it can be guaranteed that the device has good air tightness, and then the problem that an existing device is poor in air tightness is solved.

The invention discloses a magnetic control type tapered needle array diffuse discharge system in the atmospheric pressure air, which comprises a power supply (1), a discharge air chamber (6) and a measuring device (7), wherein the center of the discharge air chamber (6) is provided with a tapered needle array (3), and the tampered needle array (3) is connected with a positive electrode of the power supply (1) through a wire; the lower end, which is opposite to the tapered needle array (3), of the discharge air chamber (6) is provided with a permanent magnet (4); the measuring device is provided with a voltage measuring terminal CH2 and a current measuring terminal CH1, the voltage measuring terminal CH2 is connected with the positive electrode of the power supply (1) through a high-voltage probe (5), and the current measuring terminal CH1 is connected with the permanent magnet (4) through a wire; and a negative electrode of the power supply (1) and the measuring device (7) are connected with a grounding terminal together. The system disclosed by the invention adopts the high-voltage DC power supply, thereby being capable of providing stable and persistent current so as to acquire diffuse discharge in the atmospheric pressure air.

The invention provides an ion source soft ionization device and method under barometric pressure. The ion source soft ionization device comprises a discharge cavity, a solvent providing module and an ion source module. The input end of the discharge cavity receives carrier gas, and the output end of the discharge cavity is connected with the ion source module. The solvent providing module is used for providing a solvent with the stable content and feeding the solvent into the ion source module. The ion source module is used for ionizing matter to be tested. The ion source soft ionization device and method have the advantages of being good in quality determination and quantification, high in sensitivity, good in stability and the like.

The invention provides a multi-stirring-shaft vacuum vapor deposition furnace special for powder. The vacuum vapor deposition furnace comprises a heating furnace body, a cooling furnace body, a weighing sensor, a vacuum channel, an upper electrode, a feeding pipe and a temperature measuring component; and a high-speed stirring shaft and a low-speed stirring shaft are arranged in the heating furnace body. The upper electrode and the high-speed stirring shaft are respectively connected with two output electrodes of a radio-frequency power supply or/and two output electrodes of a direct-current power supply. The vacuum vapor deposition process of a powder material is implemented by combined use of controlled air pressure, atmosphere, electric field, magnetic field and heating modes of each part.

The invention belongs to the health care industry, and relates to a rechargeable electric ion foot bath device. The rechargeable electric ion foot bath device is characterized in that a basin body (1) is divided to a left part and a right part by a separation plate (2), a therapy line (3), a therapy line (4), a silicon electrode (5) and a silicon electrode (6) are arranged on the basin body (1), the therapy line (3) is connected with the silicon electrode (5), and the therapy line (4) is connected with the silicon electrode (6). The rechargeable electric ion foot bath device carries out electric ionization on molecules in traditional Chinese medicine liquid by utilizing an electric field of low and medium frequency pulse current, the traditional Chinese medicine liquid subjected to electric ionization can be easily absorbed by skin of a human body, and therefore the human body is treated and nursed. The rechargeable electric ion foot bath device can promote blood circulation and remove stasis, dredge the channel, dissolve lumps, inhibit inflammation and stop pain, and built the body, and overcomes the defects that in traditional foot bath without electric ions, traditional Chinese medicine liquid is slightly absorbed by the human body, and the effect is poor.

The present invention discloses a microparticle purification device based on an electrostatic agglomeration technology. The device comprises a pre-charge device configured to allow microparticles to absorb charges of different polarity, and an electrostatic agglomeration device configured to generate an alternating electric field to allow the microparticles with the charges of different polarity to mutually impact and to be coagulated. In the airflow flow path, the pre-charge device is located at the upstream of the electrostatic agglomeration device, and the pre-load device comprises pre-charge polar plates and tungsten filaments. The pre-charge polar plates comprise first polar plates and second polar plates, in the airflow flow path, the first polar plates are located at the upstream ofthe second polar plates, the two sides of the first polar plates are bent and extended towards the downstream, the two sides of the second polar plates are bent and extended towards the upstream, thefirst polar plates and the second polar plates are oppositely arranged in a staggered mode, and the tungsten filaments are arranged in the spaces formed by staggering the first polar plates and the second polar plates. The pre-charge device employs the semi-track polar plates to warp the tungsten filaments therein to form a ring electric field to make ionization more full.

The invention discloses a multi-channel high-flux composite ionization device comprising a quartz glass tube, a sampling slot, a charged liquid droplet, an air inlet channel, a spray needle, a copperring electrode, a metal needle electrode, a high-voltage high-frequency power source, an injector, a DC high-voltage power supply and a mass spectrometry interface. The multi-channel high-flux composite ionization device has the following beneficial effects: multi-channel high-flux mass spectrometry feeding is realized, the coverage range is large, and the efficiency and speed of liquid chromatography-mass spectrometry analysis are improved; the atomized charged droplet formed by the sample that is not ionized fully in the first-stage ionization process can be in full contact with a plasma flame in second-stage ionization in the composite ionization source, so that the full ionization is realized and the efficiency is improved to a certain extent; the device can be used by combining the liquid chromatography (LC); and time-division multiplexing and automatic feeding are realized, so that the utilization rate of the ionization source is increased.