85 results about "Streamer discharge" patented technology

In the plasma reactor of the present invention, streamer discharge is caused in a wide region so as to increase a plasma generation region without complicating the architecture of the plasma reactor and increasing the cost. In the plasma reactor of the invention, a needle-shaped first electrode and a plate-shaped second electrode are disposed to oppose and to be perpendicular to each other, and the first electrode has a pointed portion as the end thereof on the side of the second electrode and the pointed portion has a point angle θ not less than 30 degrees and not more than 90 degrees, and preferably not less than 60 degrees and not more than 90 degrees.

The invention relates to an intelligent towing winch for arranging multi-layer streamlined tow cables. platform; the integral reel is installed on the base through the wall frame device and the deceleration motor, the split reel is installed on the integral reel, the cable discharge mechanism and the integral reel are installed side by side on the base, and the deceleration The motor transmits the power to the integral reel, and transmits the power to the cable discharge mechanism through the sprocket transmission mechanism; the console is used to control the work of the variable frequency deceleration motor, and displays parameters such as tension, cable length, and speed in real time, forming a complete towing winch. The beneficial effects of the present invention are: providing an intelligent towing winch with multi-layer streamlined towing cables, which makes the winch small in size, light in weight, and reduces the motor rate, thereby improving the suitability and operability of the equipment.

A method for removing pollutants from air by use of both streamer discharging and photocatalysis features that under the drive of blower, the air to be treated sequentially through coase net filter, streamer, discharge-photocatalysis reaction segment, and adsorption-catalysis reaction segment to exhaust clean air.

Provided is an air cleaner capable of stabilizing the exhibition of a function even in case the function adopted is a cleaning function, the exhibition of which may be reduced in efficiency by a contaminant in the air. A body portion (2) has an inlet port (13, 14) and an outlet port (12). A main air passage connects the inlet port (13, 14) and the outlet port (12). An air cleaning unit (40) is arranged on the main air passage to clean the air to be passed therethrough. A bypass air passage bypasses the space on the inlet port side and the space on the outlet port side in the main air passage. A streamer discharge unit (63) is arranged in the bypass air passage to produce active seeds. A blowing fan (31) is disposed in the body portion (2) and is rotationally driven to generate a main air flow (F1) in the main air passage from the inlet port (13, 14) to the outlet port (12) and a bypass air flow (F2) in the bypass air passage from the space on the side of the outlet port (12) to the space on the side of the inlet port (13, 14).

The invention discloses a streamer corona plasma flue gas denitrification method which comprises the following steps of: 1, sending boiler flue gas containing nitric oxide to a streamer corona oxidation reactor after being subjected to dust removal, and under an environment of streamer corona discharge, oxidizing low valent nitric oxide into high valent nitric oxide; 2, enabling the boiler flue gas after passing through the streamer corona oxidization reactor to enter an absorption tower for circularly spraying and absorbing, and enabling the high valent nitric oxide in the flue gas to enter a liquid phase; and 3, discharging the flue gas subjected to circular spraying and absorbing through a chimney after being subjected to defogging. The streamer corona plasma flue gas denitrification method has the advantages of high denitrification efficiency, denitrification capacity, no need of catalysts, wild reaction conditions, little resistance and low energy consumption; and NOx is recycled, and a byproduct of an NH3NO3 fertilizer is obtained.

A gas treating device capable of electrically collecting dust and of decomposing odors and other matter by plasma includes a plasma generating device integrally incorporated into an ionization part in a casing. The ionization part has an ionization line and a columnar portion of a negative electrode member. The plasma generating device includes a discharge electrode which shares a counter electrode with the ionization line. During operation, dust of a relatively small size in room air is electrically charged by discharge between the ionization line and the counter electrode. An electrostatic filter entraps and collects the electrically charged dust. A plasma of low temperature is generated by streamer discharge between the discharge electrode and the counter electrode. Harmful substances and odorous substances in the room air are decomposed by an activated species contained in the generated low-temperature plasma.

The present invention discloses a streamer discharge test system for insulating oil. The streamer discharge test system comprises an impulse voltage generator, a voltage divider, a transient current detection device, a discharge test oil tank, a high-speed imaging recorder, a synchronous triggering and measuring part and a photomultiplier; a high-voltage electrode and a grounding electrode are arranged in the discharge test oil tank; discharge streamers are formed between the high-voltage electrode and the grounding electrode under impulse voltage; the transient current detection device is used for detecting current generated immediately when the high-voltage electrode carries out discharge; the output end of the photomultiplier is connected with a signal channel corresponding to the synchronous triggering and measuring part; the photomultiplier is used for receiving photons of the streamers generated between the high-voltage electrode and the grounding electrode; and the high-speed imaging recorder photographs the streamers generated between the high-voltage electrode and the grounding electrode through an observation hole. With the streamer discharge test system of the invention adopted, pre-discharge phenomena can be controllable, and basic discharge electrical parameters can be obtained, and at the same time, the transient image of discharge can be captured timely and enhanced, and the cleanliness and visual effect of a test sample can be ensured trough an oil filtering system.

The invention relates to a system and method for measuring instantaneous gas density for conversion from long-air-gap streamer discharge to leader discharge. The system includes an LED chip, a bean expanding lens, a main lens, a convergent lens, a knife edge, a telephoto lens and an ICCD camera. A discharge zone is generated between the main lens and the convergent lens. A coupling lens focuses self-luminescence generated by discharging and transmits the self-luminescence into a photomultiplier. The photomultiplier converts optical intensity time domain signals of the discharge self-luminescence into a voltage waveform and inputs the voltage waveform into a TTL pulse formation circuit. An output end of the TTL pulse formation circuit is connected to an input end of a digital delay generator, and the output end of the digital delay generator is connected to a pulse drive power supply and the ICCD camera separately. The system and the method can achieve accurate inversion measurement ofan ns-stage instantaneous gas density distribution rule in a process of conversion from long-air-gap streamer discharge to leader discharge, and have advantages of high system reliability and a high capturing efficiency.

The invention provides a denitration system and denitration processing method of a plasma synergistic catalyst. The system includes a gas mixing system, a plasma reaction system, a fixed-bed catalytic reactor, an absorbing device, and an induced draft device, which are connected in sequence. The method comprises: introducing mixed to-be-processed flue gas and ammonia gas into a plasma reactor, performing streamer discharge under the action of high voltage to generate active substances, such as electrons, ions, and free radicals, and performing primary denitration; mixing the flue gas subjected to primary denitration with ammonia gas under the catalytic action of a catalyst, and reacting NOx in flue gas with ammonia gas to achieve denitration; and discharging tail gas after absorption. A synergistic effect between streamer discharge plasma and the low-temperature catalyst is utilized to remove nitric oxide from flue gas at a low temperature with low energy consumption. The inhibition of oxygen on nitric oxide removal is overcome, low-dust arrangement or tail arrangement of an SCR device is realized, and the life of the catalyst is prolonged.

The invention provides a method and device for regenerating activated carbon by virtue of pulse discharge plasma. The device comprises a pulse power supply, a reactor and a carrier gas system, wherein the reactor comprises an upper cover, an outer cylinder and a pedestal, and the outer cylinder is located between the upper cover and the pedestal and are connected each other; the output terminal of the pulse power supply is connected with the high-voltage terminal wiring port of the upper cover and the output terminal of the carrier gas system is connected with the gas inlet of the upper cover; the outer cylinder is internally and sequentially provided with high-voltage electrodes, an activated carbon placement layer and a ground electrode; activated carbon is paved on the nylon net of the reactor, water is injected into the reactor and the reactor is sealed; a gas pump of the carrier gas system is started, a flow meter is adjusted and the circuit of the system is closed; the pulse power supply is started and parameters are adjusted so that streamer discharge is formed between the high-voltage pin electrode and the ground electrode; the circuit of the system is disconnected, the gas pump is turn off, the outer cylinder is opened to take the activated carbon out, the activated carbon is washed with deionized water and dried to obtain the regenerated activated carbon. According to the device and the method, by the pulse discharge technology, organic pollutants adsorbed on activated carbon are degraded so as to achieve the regeneration of activated carbon.

The present invention discloses one industrial method of oxidizing four-valent sulfide with non-thermal plasma in the co-existence of OH, H, O, N and other high chemical activity free radicals. High voltage power source is applied to the discharge system of streamer discharge plasma reactor to form the streamer discharge plasma reaction area while sulfite solution is fed into the reaction area, and the four-valent sulfur is oxidized into six-valent sulfur during the streamer discharge oxidizing process. Meanwhile, atomizing mode, bubbling mode or high specific surface area electrode is used to increase the gas-liquid mass transfer interface and raise the mass transfer efficiency. Compared with conventional method, the present invention has high oxidization rate, low power consumption, short processing time, small covered area, less ammonia leakage and other advantages.

The invention discloses a long air gap spherical electrode streamer discharge simulation system. The system comprises an impulse voltage generator, a voltage divider, a spherical experimental electrode, a galvanized electrode plate, a high-potential transient current measuring device, an electric field sensor, a photomultiplier, a high-speed camera, an oscilloscope and an analog terminal, whereinthe impulse voltage generator and the voltage divider are electrically connected with each other; and the spherical experimental electrode is electrically connected with the voltage divider, the galvanized electrode plate is grounded, and the analog terminal is in communication connection with the high-potential transient current measuring device, the electric field sensor, the photomultiplier, the high-speed camera and the oscilloscope. The defects in the prior art can be overcome, a ball-plate gap dynamic streamer fractal development model based on charge accumulation is established, and a guide mechanism of generation, accumulation and dissipation of space charges of a discharge channel on discharge development is conveniently researched.

The distance between a discharge electrode and a counter electrode of a discharge device is set to not more than 10 mm such that a streamer discharge is caused between the electrodes. The frequency of sound made by the streamer discharge is raised to 6 kHz or higher to exceed the frequency range which is easily perceivable by human hearing.

The frequency of a cyclically varying voltage, (fv), is made equal to or higher than the frequency of a streamer discharge, (fs), thereby making it possible to reduce the discharge delay time which is caused in a single streamer discharge.

A multi-stage collector for multi-pollutant control that contains alternating narrow and wide sections with glow discharge electrodes in some narrow sections, a uniform electric field in wide sections for collecting particles charged by the glow discharge and streamer discharge electrodes in wide or narrow sections that convert and destroy harmful gaseous pollutants such as SO₂, NO_x and volatile organic compounds as well as convert heavy metals such as mercury into a particulate form. Steady state streamer discharge is supported by non-pulsed power supply. The streaming discharge can convert the polluting gases into nitric and sulfuric acid which can be removed by combining it with ammonia to form solid salts.

The invention relates to a high-frequency unipolarity noninductive pulse discharge signal detecting method. The high-frequency unipolarity noninductive pulse discharge signal detecting method comprises the steps that needle plate electrodes are charged with surge voltage, and a voltage divider is used for collecting surge voltage signals; a current detecting unit collects current signals on the needle plate electrodes in a set sampling period; a photomultiplier observes optical signals produced during interval streamer discharge among the needle plate electrodes; the voltage divider, the current detecting unit and the photomultiplier transmit the detected signals to an oscilloscope. Compared with the prior art, the high-frequency unipolarity noninductive pulse discharge signal detecting method has the advantages of being high in precision, high in reliability and the like.

Provided is an array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment. A plurality of groups of narrow-gap streamer discharge sub reactors which are connected in parallel are allocated inside the reactor, and the sub reactors are distributed in an array. Each narrow-gap streamer discharge sub reactor is formed by a high-voltage discharge electrode and a low-voltage electrode, the low-voltage electrode is a metal cylinder or a metal tube with the diameter of 5-80mm, the high-voltage discharge electrode is that electrodes are evenly distributed on a metal rod, the high-voltage discharge electrode is installed on a centre shaft of the metal cylinder or the metal tube, and a distance between the tip end of the high-voltage discharge electrode and an inner wall of the low-voltage electrode is 1-20mm. When high voltage is applied between the high-voltage discharge electrode and the low-voltage electrode, streamer discharge with high strength is produced at the position of the discharge gap. The reactor serves as a part of waste gas tube or flue, treated smoke or waste gas firstly enters the array-type narrow-gap coaxial streamer discharge reactor for pretreatment and then enters a conventional smoke waste gas treatment reactor for treatment.