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685 results about "Special design" patented technology

Megawatt corrugated waveguide attenuator

The invention discloses a megawatt corrugated waveguide attenuator. A first standard corrugated waveguide segment, a second smooth waveguide segment, a third mode changing waveguide segment, a fourth main attenuation waveguide segment, a fifth mode changing waveguide segment, a sixth smooth waveguide segment, a seventh mode changing waveguide segment and an eighth standard corrugated waveguide segment are sequentially arranged on a waveguide tube, wherein the first standard corrugated waveguide segment supports HE11 mode transmission, the second smooth waveguide segment achieves conversion from an HE11 mode to a TE11 and TM11 hybrid mode, the third mode changing waveguide segment achieves conversion from the TE11 and TM11 hybrid mode to an EH11 mode, the fourth main attenuation waveguide segment conducts attenuation on power, the fifth mode changing waveguide segment achieves conversion from the EH11 in the surplus power to a TE11 mode, the sixth smooth waveguide segment is used for TE11 mode transmission, the seventh mode changing waveguide segment achieves conversion from the TE11 mode to an HE11 mode, and the eighth standard corrugated waveguide segment supports HE11 mode transmission. According to the megawatt corrugated waveguide attenuator, the uniformity of the power attenuation magnitude per unit length inside the whole main attenuation segment can be achieved due to the design of periodic corrugations; due to the special design of waterways, the impact of high-flow-rate cooling water on waveguide walls can be reduced, and the consistency of the flow rate of the water in the whole water jacket can also be ensured.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI

Differential energy recovery device and method for seawater desalination system

The invention discloses a differential energy recovery device and a method for a seawater desalination system. The differential energy recovery device comprises two hydraulic cylinders connected in parallel. A piston divides each hydraulic cylinder into two cavities. The piston is fixedly connected with a piston rod. A low-pressure raw water inlet is connected with two left cavities through liquid inlet valves. The left cavities are connected with a high-pressure raw water outlet through liquid drain valves. Two right cavities are connected with reversing valves. The reversing valves are connected with a high-pressure concentrated water inlet and are connected with a low-pressure concentrated drain outlet. The method is that high-pressure concentrated water coming from a reverse osmosis device is enabled to enter the right cavities of the two hydraulic cylinders through the reversing valves, and low-pressure raw water in the left cavities is pushed and pressurized to enter the reverse osmosis device. Since the direct pressurization principle of the hydraulic cylinders is used for the special design, one-time energy conversion is adopted and the pressure of high-pressure seawater after pressure exchange is larger than the pressure of concentrated saline water, the invention has the advantages that the pressurizing pumps are not required for pressurization once more, the energy conversion efficiency is high, the operating cost is saved and the energy consumption of the reverse osmosis system is further reduced.
Owner:TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI

Permanent-magnet type eddy current tuned mass damper

ActiveCN101761146APrecise linear motionStructural damping dropBridge structural detailsTowersStress concentrationElectricity
The invention relates to a permanent-magnet type eddy current tuned mass damper which comprises a steel magnetic-conducting baseplate (10), wherein end plates (3) are respectively arranged at two ends of the baseplate (10). The permanent-magnet type eddy current tuned mass damper is characterized by also comprising a circular shaft (4) and a linear bearing seat (5), wherein two ends of the circular shaft (4) are respectively arranged on the corresponding end plates (3), and the linear bearing seat (5) is sleeved on the circular shaft (4) and can slide on the circular shaft (4); the lower part of the bearing seat (5) is connected with a mass block (6), and two ends of the mass block (6) are respectively connected with the corresponding end plates (3) through spiral springs (7); the lower part of the mass block (6) is connected with a permanent magnet (13), and a copper plate (12) is arranged below the permanent magnet (13) and connected with the baseplate (12) through a cushion block (11). By adopting an eddy current damping model with special design, the permanent-magnet type eddy current tuned mass damper realizes the damping adjustability of the damper in a larger range, realizes the complete separation between the system rigidity and the damper, and cancels the mechanical friction energy consumption and stress concentration elements, thereby avoiding the common TMD damage failure.
Owner:湖南省潇振工程科技有限公司 +1

Atomizer with multiple tobacco extract bottles

The invention discloses an atomizer with multiple tobacco extract bottles. The atomizer with the multiple tobacco extract bottles comprises a suction nozzle (1), a suction nozzle base (3), a tobacco extract pool (7), an atomizing core (8) and an atomizing core base (9), wherein the suction nozzle (1) is mounted on the suction nozzle base (3), one end of the atomizing core (8) is mounted on the atomizing core base (9), and the other end of the atomizing core (8) is connected with the tobacco extract pool (7). The atomizer with the multiple tobacco extract bottles is characterized by further comprising a rotatable tobacco extract switching assembly, and the independent tobacco extract bottles (4) are arranged in the rotatable tobacco extract switching assembly; the tobacco extract switching assembly is arranged between the suction nozzle base (3) and the tobacco extract pool (7), and the selection of the tobacco extract bottles (4) and the releasing of the corresponding tobacco extract are conducted through the rotation of the tobacco extract switching assembly. According to the atomizer with the multiple tobacco extract bottles, the space of the circular atomizer can be effectively used to the maximum extent, the change of flavor can be achieved fast, when a user needs to change the flavor of the tobacco extract, a sleeve of the tobacco extract bottles of the atomizer can be rotated to achieve the change of the flavor, one flavor can be changed by rotating the sleeve every 90 degrees, and the outflow and the closing of the extract liquid can be ensured through the special designed structure of the bottoms of the tobacco extract bottles.
Owner:HUIZHOU KELVIN TECH

High-temperature-resistant clean type self-adhesive protection film and preparation method thereof

The invention discloses a high-temperature-resistant clean type self-adhesive protection film which comprises a self-adhesive layer, a middle layer and a back material layer, wherein the self-adhesive layer and the back material layer are positioned on two sides of the middle layer; the self-adhesive layer consists of 5-20wt% of low-density polyethylene, 55-80wt% of metallocene polypropylene low-density elastomer and 15-30wt% of SEBS; the middle layer consists of 70-85w% of high-density polyethylene and 15-30w% of low-density polyethylene; the back material layer consists of 65-85w% of middle-density polyethylene and 15-35w% of low-density polyethylene; the self-adhesive layer, the middle layer and the back material layer respectively account for 5-20 percent, 60-80 percent and 5-20 percent of the total weight of the protection film; the sum of the weight ratios of the self-adhesive layer, the middle layer and the back material layer is 100 percent. According to the high-temperature-resistant clean type self-adhesive protection film, a composite bottom film comprising the self-adhesive layer, the middle layer and the back material layer is prepared by co-extrusion film blowing; by the special design of all the layers, in particular the self-adhesive layer, the self-adhesive protection film is high in bonding strength, high-temperature-resistant and high in puncturing strength; meanwhile, in a co-extrusion film blowing process, effective combination and the processing stability are guaranteed.
Owner:佛山新长盛塑料薄膜有限公司

Method and device for preventing relay cellular system from uplink and downlink interference

The invention relates to a realization method in which a Relay support cellular system can effectively avoid the interference of uplink and downlink, and a device thereof as well as a solution which allows the interference of the uplink and the downlink to be introduced by the system due to coverage expansion. The invention is realized by a special design of a frame structure and the special design comprises a transmission order of four system links in the frame structure which are a downlink relay link L1, a downlink access link L2, an uplink access link L3 and an uplink relay link L4, and a guard space of a transfer point of the uplink and the downlink. When the transmission order of the four links of the frame structure is L1, L2, L3 and L4, a multiplying adjustment is processed on the required guard space of the transfer of the uplink and the downlink simultaneously allowing for path propagation delays between BS and RS as well as between RS and UE, namely offsetting the propagation delay between RS and UE; when the transmission order of the four links of the frame structure is L1, L2, L4 and L3, the guard space of the transfer of the uplink and the downlink only allows for the propagation delay between BS and RS while the propagation delay between RS and UE can be guarded by idle time which is caused by a sending to BS in advance from RS.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Thermal treatment wire rod for 2000MPa-grade cable steel wire and production method

The invention provides a thermal treatment wire rod for a 2000MPa-grade cable steel wire and a production method. The thermal treatment wire rod is prepared from the following components in percentage by weight: 0.85 to 1.0 percent of C, 0.80 to 1.5 percent of Si, 0.30 to 0.80 percent of Mn, 0.20 to 0.80 percent of Cr, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 0.01 to 0.08 percent of Al, and the balance of Fe and inevitable impurities. According to the thermal treatment wire rod for the 2000MPa-grade cable steel wire and the production method disclosed by the invention, through special design of the components, the wire rod is produced through processes of smelting, continuous casting, blank casting and grinding, steel rolling and off-line thermal treatment, and the sorbitizing rate of the wire rod is greater than 95 percent, tissues are homogenized, and quenching tissues such as network carbide and martensite are avoided. After the wire rod is subjected to drawing, zinc (aluminum) plating, and stabilization treatment, the strength of the steel wire is greater than or equal to 2000MPa, so that the wire rod can be used for producing the 2000MPa-grade cable zinc (aluminum) plating steel wire for bridges, and is applied to bridges requiring extra long-span and ultrahigh strength.
Owner:QINGDAO SPECIAL STEEL CO LTD

Method for synthesizing silver nanoclusters by aid of single-stranded DNA (deoxyribonucleic acid) used as template

The invention provides a method for synthesizing silver nanoclusters by the aid of single-stranded DNA (deoxyribonucleic acid) used as a template, and belongs to the technical field of nano materials. By the method, problems of complicated production and excessively high cost of nano-silver for detecting mercury ions at present are solved. The method for synthesizing the silver nanoclusters by the aid of the single-stranded DNA used as the template is characterized in that the single-stranded DNA containing cytosine and guanine is used as the template and is mixed with Ag<+> solution to obtain a mixture, reducing agents are added into the mixture, and the fluorescent silver nanoclusters can be acquired after reduction reaction is performed on the mixture with the reducing agents. The method has the advantages that polyinosinic acid (PI) and polycytidylic acid (PC) which are commercially available are used as the template in the simple, low-cost, environment-friendly and reliable method for synthesizing the silver nanoclusters; fluorescence is utilized, and fluorescent silver nanocrystals are synthesized from the polyinosinic acid, the polycytidylic acid and the like without special design or preprocessing; and the novel silver nanoclusters are excellent in selectivity and sensitivity, can be applied to detecting Hg<2+>, and are feasible and have a future development prospect in the aspect of monitoring pollutants in water.
Owner:ZHEJIANG NORMAL UNIVERSITY

S/X double-band circularly polarization feed source

ActiveCN102136631ARealize dual frequency applicationTo achieve dual-band applicationsWaveguide hornsSimultaneous aerial operationsCouplingSpecial design
The invention discloses an S/X double-band circularly polarization feed source which adopts a coaxial cavity structure and comprises an S frequency band horn, a caliber transforming section, an S frequency band coupling hub, an S frequency band circularly polarization forming network, an X frequency band horn, an X frequency band circular polarizer, a cable component and a waveguide component. The outer cavity of a coaxial cavity comprises the S frequency band horn, the caliber transforming section and the outer cavity of the S frequency band coupling hub, and the inner cavity of the coaxial cavity comprises the X frequency band horn and the inner cavity of the S frequency band coupling hub. The S/X double-band circularly polarization feed source adopts a coaxial feeding source design scheme, the coaxial cavity realizes the radicalization of S frequency band circularly polarization electromagnetic wave, and the X frequency band multimode horn embedded in an inner core of the coaxial cavity structure to be as the feed source realizes the radicalization of X frequency band circularly polarization electromagnetic wave; and according to the design thought of the high-gain S/X double-band circularly polarization feed source, by performing special design aiming at high gain on the S frequency band coupling hub, and smartly combining X feed source design to perform the integrated design of the feed source, the S/X double-band circularly polarization feed source becomes a novel high-gain S/X double-band circularly polarization feed source which covers deep space detection, observation and control communication application frequency bands, and has good radiation property.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
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