139 results about "Radiation zone" patented technology

The invention relates to an on-line safety evaluation method for water-cooled walls. The method comprises the following steps: arranging a small amount of test points in the pipeline section with typical flow heat transfer in each radiation zone, combining with the existing test points at the entrance and exit outside the furnace, calculating and checking the characteristic parameters of the inner wall of the water-cooled wall of the station boiler, inputting to a computer for calculation, performing the on-line real-time calculation of the Parameters such as pipeline flow, entrance and exit pressures, enthalpy value, lengthwise furnace inner wall temperature of each pipeline section and stress change value, to judge whether the dangerous factors exist, such as hydrodynamic instability, over-temperature and creep fatigue, displaying the calculation results in real time, recording the data as judgment basis of safe operation of the water-cooled wall. The invention realizes the optimal operation of equipment, manages the repair and maintenance based on the operational state, and ensures the state maintenance and repair of equipment.

The invention relates to an antenna component used for microwave ablation. The antenna component used for the microwave ablation comprises a cooling water channel, a coaxial line and a radiator, wherein a circle of soft magnetic ferrite film is plated on the outermost layer of the coaxial line. The invention also relates to a microwave ablation needle adopting the antenna component used for the microwave ablation. The antenna component used for the microwave ablation has the advantages that the soft magnetic ferrite film can effectively inhibit microwave transmitted backward along the outer wall of the coaxial line, a radiation zone does not need to be filled with a stable medium, circulating water is allowed to enter the radiation zone, temperature at the head of the ablation needle can be effectively controlled, and the ablation needle is prevented from being burned out due to overhigh temperature and a medical accident is avoided.

This invention provides an improved technical system for restoring deteriorated lakeside zone. The technical system comprises: utilizing variable-amplitude water level zone as the core, setting a certain range of land radiation zone and water radiation zone as the protective zone, clearing artificial interferences, restoring the base, stabilizing the bank slope, controlling near-bank wind and wave, improving large-area water body quality by using land plant floating bed technology, and improving water body transparency. The technical system selects local plant species as the pioneer species, and utilizes a combination of transplanting and introducing soil seed banks to restore and maintain the ecological system functions of lakeside zone. The technical system is highly adaptable to the environmental conditions, and has high operability and high ecological safety. The technical system can achieve good scenic effect during and after the restoration of lakeside zone.

The invention discloses a broadband dual-polarized antenna unit based on coupled feeding. The broadband dual-polarized antenna unit comprises a radiation layer, a feeding layer, a metal substrate anda connecting structure which are connected layer by layer, wherein the radiation layer is coupled with the feed layer, the radiation layer comprises a first substrate integrated waveguide cavity structure and a main radiation patch and a parasitic radiation patch which are arranged on the end surface of the first substrate integrated waveguide cavity structure, the main radiation patch is matchedwith the parasitic radiation patch, the feed layer comprises a first slot feed and a second slot feed which are orthogonal to each other, and the connecting structure penetrates through the metal substrate and is connected to the first slot feed and the second slot feed respectively. The designed antenna unit has a wide standing wave bandwidth, the first slot feed and the second slot feed which are orthogonal to each other have a good cross polarization isolation effect, the designed antenna unit is compact in structure, and the designed hierarchical structure is good in machinability.

A system displays potential radiation zones in an angiography X-ray laboratory during an angiography procedure, for example, and identifies areas of potentially harmful radiation due to X-ray scatter in an imaging room. An input processor receives data identifying an emitted X-ray dose level applied to an area of a patient anatomy. An image data processor determines level of X-ray radiation dose scatter in different regions of an imaging room indicating regions of potentially harmful radiation, by calculating X-ray scatter dose at different distances from an irradiated patient area as being substantially in proportion to the size of the irradiated area and substantially inversely proportional to the square of the distance from the irradiated area. A visual alert system visually identifies areas of a room of potentially harmful radiation in response to the determination.

The invention relates to a method for drying and sterilizing Panax notoginseng, which comprises the following steps of: (1) sorting Panax notoginseng raw material, washing, and draining; (2) turning on a microwave drying and sterilizing machine, laying the Panax notoginseng raw material on the conveyer belt of the microwave drying and sterilizing machine from the beginning end of the machine, controlling the laying thickness not more than 30 mm, conveying the Panax notoginseng raw material to a hermetic microwave radiation zone positioned in the middle section of the machine via the conveyer belt, and conducting drying and sterilizing, wherein the material feeding port is arranged in a common operation zone and the conveying speed of the conveyer belt is 0.3-5 m/min; and (3) conveying the dried and sterilized Panax notoginseng raw material out of the machine from the tail end arranged in a clean operation zone of the machine via the conveyer belt, collecting, bagging, and packaging. The inventive method adopts microwave drying and sterilization; and has the advantages of high heating speed, uniform heating, low drying temperature (lower than 80 DEG C), short drying time, and effectively saved energy consumption (by over 2/3).

The invention discloses an EBG surface-loaded millimeter wave SIW horn antenna and belongs to the technical field of antenna microwaves. The antenna comprises an upper EBG layer metal plate (4), an upper EBG layer dielectric substrate (1), an upper radiation layer metal plate (5), a radiation layer dielectric substrate (2), a lower radiation layer metal plate (6), a lower EBG layer dielectric substrate (3), a lower EBG layer metal plate (7), a feed layer metal plate (8) and feed layer metal ground (9); the upper EBG layer metal plate (4), the upper EBG layer dielectric substrate (1), the upperradiation layer metal plate (5), the radiation layer dielectric substrate (2), the lower radiation layer metal plate (6), the lower EBG layer dielectric substrate (3) and the lower EBG layer metal plate (7) are laminated together in sequence; the feed layer metal plate (8) is in coplanar interconnection with the upper radiation layer metal plate (5); the feed layer metal ground (9) is in coplanarinterconnection with the lower radiation layer metal plate (6); a metal patch array and metalized via holes (10) are distributed on the upper EBG layer metal plate (4); the upper EBG layer metal plate and the lower EBG layer metal plate are consistent in structure; and the upper EBG layer dielectric substrate and the lower EBG layer dielectric substrate are consistent in structure; and a plurality of SIW horn cavity metallized through holes (11) are equivalent to a rectangular metal waveguide. The EBG surface-loaded millimeter wave SIW horn antenna is high in front-to-back ratio, high in gainand small in caliber.

The invention discloses a radiator optimally designed according to the wind speeds in flow fields, which is suitable to be arranged at the air outlet of a fan. The radiator comprises a plurality of fins which are formed by connecting a horizontal fin group in a first radiation zone and a vertical fin group in a second radiation zone. The air flow generated by the fan passes through the first radiation zone and the second radiation zone in form of a first flow field and a second flow field, wherein the wind speed of the first flow field is higher than that of the second flow speed.

The invention relates to a high-heat radiation copper-based circuit boar comprising a board body. The board body is formed by composition of a circuit layer (1), an insulated heat conduction layer (2), and a cooper base layer (3). The high-heat radiation copper-based circuit board is characterized in that reinforced heat radiation zones (4) without current flowing are arranged at the surface of one side of the circuit layer (1) of the board body; a plurality of blind holes (5) along the direction of the board thickness are arranged in each of the reinforced heat radiation zones (4); and the blind holes (5) punch the circuit layer (1) and the insulated heat conduction layer (2), so that the bottoms of the blind holes (5) are communicated with the cooper base layer (3). Moreover, copper-plated layers (6) cover the walls and the bottoms of all the blind holes (5); and the circuit layer (1) and the cooper base layer (3) are connected by the copper-plated layers (6). According to the invention, the heat of the circuit layer is directly conducted to the cooper base layer through the copper-plated layers in the blind holes, so that the heat radiation capabilities of the reinforced heat radiation zones are enhanced and the heat radiation speed is accelerated.

The invention discloses a cast aluminum silicon magnesium gas water heater with pneumatic electric coupling ultimate condensation. The gas water heater comprises a plurality of modular heat exchange furnace sheets. The multiple modular heat exchange furnace sheets, a plate heat exchanger and a heat pump are connected into a heating circuit through pipelines. Communication of the pipelines is controlled through a valve set. Pin fins in the modular heat exchange furnace sheets are arranged up and down in a staggered mode and are fins with various cross-section shapes in a combined mode; througha radiation zone split water flow channel structure, the phenomenon of heat transfer deterioration caused by supercooled boiling is avoided; through the three-dimensional structured pin fins, grooves,inclined ribs and condensation heat exchange zone blunt body protrusion structure design, condensation heat exchange zone pin fins and wall surface liquid films are effective torn, and the heat and mass transfer performance is improved; tetrahedral protrusions of the condensation heat exchange zone effectively tear the wall surface liquid films, and the heat transfer area is enlarged; through surface corrugation treatment of a convection heat exchange zone, the heat exchange area is increased, and the heat exchange coefficient is increased; and an overall heating system adopts a pneumatic electric coupling form, latent heat of ultimate condensation flue gas is fully recovered under the high-parameter water outlet and return and high load conditions, and the effect that the system has thehighest thermal efficiency at all times is ensured.

The invention discloses a power network online safety stability analysis method. The method comprises the steps of S1, obtaining an alternating-current line in a power network, design parameters and geographic position information of an associated tower, and typhoon actual measurement data and forecast data, extracting power network range terrain information, and building a line-tower-terrain geographic model; S2, analyzing the typhoon actual measurement data and forecast data, calculating a line fault probability of falling into a typhoon disaster radiation zone, and building a probability model of a line fault caused by typhoon; S3, in combination with the calculated line fault probability, selecting a fault line, and forming a risk fault set caused by the typhoon; and S4, according to the risk fault set caused by the typhoon, performing power network online safety stability analysis to obtain a risk fault analysis result. The effectiveness and practicality of power network online safety stability analysis under typhoon disaster weather conditions are comprehensively improved.

The invention discloses a tubular ultraviolet light based oxidation device for removing total organic carbon (TOC) by using ozone in the technical field of water purification. The device comprises a tube, an aerator tube and two groups of quartz sleeves internally provided with an ultraviolet lamp, wherein two ends of the tube are respectively connected with a water inlet pipeline and a water outlet pipeline, and the two groups of quartz sleeves are fixedly arranged in the aerator tube and symmetrically arranged by taking the axis of the tube as a symmetrical axis. The design of the aerator sleeve in the invention introduces air (oxygen) to the surface of the ultraviolet lamp, which avoids the strong absorption of the water to 180nm-190nm ultraviolet radiation while improving the oxygen concentration of a radiation zone, and greatly improves the generation amount of photoinduced ozone; and carrier gas with pressure ensures that the ozone generated on the surface of the lamp tube can uniformly spread in pipelines within an extremely short time, thereby improving the oxidation efficiency of a reactor.

The invention relates to a contact type singeing machine for textile, comprising a machine body, a driving rubber roller disposed on the machine body, and a plurality of cloth guidance rollers disposed on and inside the machine body, and a contact type singeing device inside the machine body. The contact type singeing device comprises a concaving shaped case and two electrically heating rod disposed therein, a high temperature alloy steel body for forming a high temperature radiation zone is assembled by covering peripheral of the electrically heat rod. Firstly, due to electrically heating singeing mode, production cost is greatly reduced under the circumstance that price of oil and gas raise day by day; secondly, by installing a stentering heating board above the electrically heating rod, and forming high temperature radiation zone, not only floss on the surface of the fabric is burned, but also floss in intervals formed by warp and weft of the fabric is burned; meanwhile, heat energy recovery device is adopted, energy is saved; and lifting fabric passing device is designed, and shortcoming of cloth burning and electricity break and stop is thoroughly eliminated.

The invention relates to the technical field of boilers, in particular to a water-tube boiler achieving internal circulation of flue gas and a low-nitrogen combustion control method. The water-tube boiler achieving internal circulation of the flue gas comprises a boiler wall and a boiler chamber which is communicated with an outlet of a combustor, an outer side water-cooling wall is installed on the side wall of the boiler chamber, an inner side water-cooling wall is installed in the boiler chamber, and a water-cooling interlayer is formed between the outer side water-cooling wall and the inner side water-cooling wall; a flue gas backflow inlet is formed in the end, far away from the outlet of the combustor, of the water-cooling interlayer, and a lower-temperature flue gas backflow outlet is formed in the end, close to the outlet of the combustor, of the water-cooling interlayer; a low-temperature flue gas backflow zone is formed by the water-cooling interlayer, and a high-temperature flue gas radiation zone is formed by the portion, located on the inner side of the inner side water-cooling wall, of the boiler chamber. According to the water-tube boiler achieving internal circulation of the flue gas and the low-nitrogen combustion control method, by means of the circulation mode of flue gas in the boiler chamber, decreasing of combustion temperature is facilitated, generation of nitrogen oxides is reduced, the load of an induced draft fan cannot be increased, the system is easy to control, and combustion stability is good.

The invention relates to the technical field of antennas, and discloses a low-frequency ultra-wideband miniaturized Vivaldi antenna for a probe. The low-frequency ultra-wideband miniaturized Vivaldi antenna comprises a first antenna unit and a second antenna unit, wherein the first antenna unit and the second antenna unit are arranged in a mutually crossed manner, each of the first antenna unit and the second antenna unit comprises two dielectric plates which are arranged in parallel, a feed layer is clamped between the two dielectric plates, radiation layers are fixedly connected to the two sides, away from each other, of the two dielectric plates, open-circuit cavities are formed in the radiation layers, a plurality of gaps parallel to each other are formed in the radiation layers so that the radiation unit can be divided into a plurality of radiation parts in the symmetry axis direction of the open-circuit cavities, a loading part for connecting each radiation part is arranged between every two adjacent radiation parts, a radiation groove is formed in at least one of the radiation parts. Through the combination of two modes of loading a resistor and forming the loading groove, the port standing wave of the two antenna units is reduced, the isolation degree is improved, and the antenna with a smaller size is obtained.

The invention provides an ultrahigh frequency RFID planar near-field antenna with stable coverage. The ultrahigh frequency RFID planar near-field antenna comprises a metal floor, a dielectric plate and a radiation layer which are stacked in sequence; the radiation layer is composed of a power division network and 2 to 4 radiators; the power division network is located in the middle of the radiation layer, and the radiators are uniformly distributed around the power division network; each radiator comprises a radiator body, a first jumper, a second jumper group and 3 to 18 groups of absorption branches; each radiator body is located in the middle of the radiator, and the absorbing branches surround the radiator body; the power division network comprises first micro-strips of which the number matches that of the radiators; each radiator body is composed of a main body micro-strip; one end of each first micro-strip is connected with one end of the corresponding main body micro-strip at a first point; each main body micro-strip rotates, bends and extends around the corresponding first point; each absorbing branch comprises an arc-shaped micro-strip and a first lumped element; one end of each arc-shaped micro-strip is grounded through the corresponding first lumped element, and the other end is connected with the corresponding main body micro-strip at the outer edge of the corresponding radiator body; the current direction of each arc-shaped micro-strip is opposite to that of the corresponding main body micro-strip.

The invention discloses a K/Ka waveband dual-band dual-circularly polarized antenna based on gap waveguide. The K/Ka waveband dual-band dual-circularly polarized antenna comprises a first power division and radiation layer, a second power division and radiation layer and a gate interlayer which are sequentially arranged from bottom to top, the first power division and radiation layer comprises a first power distribution network and a left-hand circular polarization radiation unit, and the left-hand circular polarization radiation unit meets a left-hand circular polarization radiation condition; the second power division and radiation layer comprises a second power distribution network and a right-handed circular polarization radiation unit, and the right-handed circular polarization radiation unit meets the right-handed circular polarization radiation condition; the first power distribution network and the second power distribution network are one-to-four same-phase power distribution networks formed by slot gap waveguide-ridge gap waveguide-slot gap waveguide; the grid layer is used for reducing the grating lobe level of a far-field pattern; the antenna is high in efficiency and high in gain, and achieves a good function of a dual-band dual-circularly polarized antenna. A dielectric substrate is not needed, and the radiation efficiency and the power capacity of the antenna are effectively improved.