32 results about "Atmospheric pressure discharge" patented technology

Improvements have been made for collecting, focusing, and directing of ions and / or charged particles generated at atmospheric or near atmospheric pressure sources, such as but not limited to, electrospray; atmospheric pressure discharge ionization, chemical ionization, photoionization, and matrix assisted laser desorption ionization; and inductively coupled plasma ionization. A multiple-aperture laminated structure is place at the interface of two pressure regions. Electric fields geometries and strengths across the laminated structure and diameters of the apertures; all of which act to optimize the transfer of the ions from the higher pressure region into the lower pressure region while reducing the gas-load on the lower pressure region. Embodiments of this invention are methods and devices for improving sensitivity of mass spectrometry when coupled to atmospheric, near atmospheric, or higher pressure ionization sources by reducing the gas-load on the vacuum system.

The present invention belongs to atmospheric pressure discharge cold plasma generator technology field. It features said generator gas supply system adopting double gas source gas supply system and uncover electrode structure, thereby constituting flat plate type or circle type or elliptic type atmospheric pressure discharge cold plasma generator. Said double gas source gas supply system can realize stabilizing gaseous discharge unable realized in inducing air or other atmospheric pressure, uncover electrode structure capable of avoiding electrode surface dielectric medium damage in current media blocking discharge.

This disclosure proposes a microwave circuit power limiter and test system based on atmospheric pressure discharge plasma. The power limiter includes an atmospheric pressure plasma jet generation device, a microwave power input device, and a resonance device. The atmospheric pressure plasma jet generation device, microwave The power transmission devices are respectively connected to the resonance device, and the discharge plasma generated by the atmospheric pressure plasma jet generation device contacts and fuses with the discharge plasma generated by the microwave discharge of the incident signal of the microwave power transmission device, and the microwave power transmission device is transferred in the resonance device The incident signal is reflected and attenuated and output. Under the joint action of atmospheric pressure plasma jet and microwave discharge, atmospheric pressure discharge plasma is generated, and the limiter can reflect and attenuate the incident power in the microwave circuit, and has the advantages of fast response speed, high power tolerance, wide protection frequency band, etc. Advantages, can meet the actual needs of high-power and high-frequency microwave circuit power limiting.

The invention relates to a water purification installment with ultraviolet radiation, at least includes the reactor, its characteristic lies in that the reactor is equipped with irridating tube and one circulation cooling tube, the low atmospheric pressure discharge tube is in the irridating tube , one air feeder and one trachea one end enters in the above illumination hall, leaves the trachea another end connection and enters the reactor, which shine in the hall the mix and has the ozone air-input in the reactor of the water purification, which revolves the illumination tube establishment to have the light catalyst piece group. In the illumination hall has send out the purple outwire discharge tube, the discharge tube's send out is lower than 290NM ultraviolet radiation The reactor has induction pipe and inputs the chlorine together with water, the promotion oxidation.

The invention discloses a plasma-enhanced oxidation roasting device for synthesizing high-nickel positive electrode materials for lithium-ion batteries. The plasma-enhanced oxidation roasting device includes a quartz tube furnace and an atmospheric pressure discharge plasma generator; the quartz tube type The furnace includes a quartz tube, an inlet pipe at one end of the quartz tube, and an exhaust pipe at the other end of the quartz tube; the atmospheric pressure discharge plasma generator includes a high voltage power supply and an atmospheric pressure built in the quartz tube furnace A discharge plasma generator; the gas pressure in the quartz tube furnace is maintained at normal pressure during the reaction process. The device is of great significance for improving the comprehensive performance of high-nickel cathode materials, especially for reducing the cation mixing degree of high-nickel cathode materials, improving the cycle performance and rate performance of materials, reducing the alkalinity of materials and improving the processing performance of materials.

The invention relates to a processing technology and device of an optical fiber plasma liquid. According to the invention, optical fiber pipes are utilized and uniformly ranked, and gas is introduced in the optical fiber pipes; a plasma is generated at a micropore optical fiber pipe orifice or end head by utilizing atmospheric pressure discharge; the area of the plasma is micro-controllable, the contact area of the plasma and a processing material is good, a processing effect can be obviously improved, and the energy utilization rate is greatly improved; and discharge gas is restricted by using optical fiber so as to generate a micro-plasma in a liquid at the atmospheric pressure to process a polluted liquid sample. The processing technology and device have the following specific advantages that gas utilization rate is high, discharge manner is simple, complicated vacuum equipment is not required, equipment cost is low, fungicidal efficiency is high, and energy consumption is low.

An air pressure discharging non-thermal plasma generator based on pre-ionization ignition device has its characters: the said pre-ionization ignition device, added into the said generator, locates on the third metal pole between two plate poles or inside and outside poles, thus the said plate or coaxial air pressure discharging non-thermal plasma generator is structured. The said pre-ionization ignition device can achieve the direct breakdown of nitrogen, air and oxygen in a lower breakdown voltage, and the stable discharge. The cost of working gas of air pressure discharging non-thermal plasma generator is greatly reduced as well.

A cold plasma generator of atmosphere discharge is featured as setting flat-plate type or rotation type of contraction and enlargement channel structure at air inlet or air outlet or discharge region of generator to form flat-plate type or coaxial type cold plasma generator of atmosphere discharge and furthermore to form generator array .The said contraction and enlargement channel structure is formed by compression unit, throat unit and expansion unit to raise efflux velocity of cold plasma at outlet of said generator .

The invention relates to a method for improving the enzyme activity by utilizing an atmospheric pressure discharge plasma, belonging to the field of cold plasma technology application. The method is characterized by comprising the following steps in sequence: preparing enzyme solution, selecting the type of an atmospheric pressure discharge plasma generator and setting working parameters, and treating the enzyme solution by utilizing the atmospheric pressure discharge plasma. The invention has the advantages of high efficiency and convenient change of the enzyme activity.

The invention provides an apparatus and method for improving the hydrophilicity of an aramid fiber by using homogeneous atmospheric-pressure discharge, belonging to the technical field of atmospheric low temperature plasma. The apparatus comprises a bipolar nanosecond pulse power supply (1), a wire-to-plate electrode, an electrical measuring system, a spectral measurement system and an aramid fiber fabric treating device. The bipolar nanosecond pulse power supply (1) drives the wire-to-plate electrode to undergo dielectric barrier discharge; the characteristics of discharge plasma are analyzed by using the electrical measuring system and the spectral measurement system; discharge parameters are changed to obtain uniform discharge plasma; and the apparatus and method are used for treating an aramid fiber fabric (7) and reducing the water contact angle of the aramid fiber fabric (7).

The invention discloses a method for preparing black silicon through atmospheric pressure discharge plasma jet. The method comprises the steps that a silicon wafer is placed in a plasma jet dischargesolution, and the surface of the silicon wafer is oxidized; the silicon wafer is washed in HF and ethanol solutions in order, and then is put into a NaOH solution for polishing; the silicon wafer is put into the mixture of NaOH and ethanol for texturing, and then is washed; and the silicon wafer is put into a plasma jet discharge mixed solution to prepare black silicon, and then washing and dryingare carried out, wherein the mixed solution comprises a metal salt catalyst and HF. The method has the advantages of low reaction device requirement, simple operation, low cost, normal temperature reaction, convenient large-scale production, stable generated H2O2 content, high practicability, wide applicability and remarkable economy benefit.

The invention discloses an electromagnetic field constraint plasma enhanced oxidation roasting device for synthesizing a high-nickel positive electrode material of a lithium ion battery, wherein the plasma enhanced oxidation roasting device comprises a quartz tube furnace and an atmospheric pressure discharge plasma generation device; the quartz tube furnace comprises a quartz tube, an air inlet pipe positioned at one end of the quartz tube, and an exhaust pipe positioned at the other end of the quartz tube; a deflection electromagnetic field is arranged in the quartz tube, and a reactant delivery region is arranged in the quartz tube; the deflection electromagnetic field enables active oxygen to deflect in the direction of the reactant delivery region; the atmospheric pressure discharge plasma generation device comprises a high-voltage power supply and an atmospheric pressure discharge plasma generator arranged in the quartz tube. The electromagnetic field constraint plasma enhanced oxidation roasting device has important significance for improving the comprehensive performance of the high-nickel positive electrode material, and especially has remarkable effects of reducing the cation mixing and discharging degree of the high-nickel positive electrode material, improving the cycling performance and the rate performance of the material, lowering the material alkalinity and improving the material processing performance.