98results about How to "High technology maturity" patented technology

The invention discloses a method for overlaying a wear-resistant layer of a blade shroud of a turbine working blade. In the method, manual tungsten electrode argon arc welding is used, and the specific process parameters meet the requirements that: welding wires are selected from a T800 cobalt-based wear-resistant alloy welding wire which is researched according to a B50TF193 standard of AmericanGeneral Electric Company and an S-6 cobalt-based wear-resistant alloy welding wire which is researched according to an American metal society standard AMS5788; the diameters are phi 1.6mm and phi 1.2mm respectively; a mark and the diameter of a tungsten electrode are WCe20 and phi 2.0mm; the diameter of a nozzle is phi 12mm; welding current is between 20 and 25A; and the flow rate of protective gas is between 10L/min and 12L/min. By the method, the condition of incomplete penetration or over-melting of a Z-shaped gear switching part R is avoided, the problem of overheating of welding is also solved, and the occurrence probability of welding cracks is greatly reduced or avoided. The method completely meets the requirements of the wear-resistant layer in a high-temperature working state after welding.

The invention discloses a tissue quantitative analysis method for TRIP steel. The tissue quantitative analysis method comprises the following steps: firstly, preparing the TRIP steel into a metallographic specimen; secondly, grinding and polishing the metallographic specimen and then corroding the polished metallographic specimen with 4-8 percent nital solution for 8-30 seconds, observing a polyphase structure of the TRIP steel under a scanning electron microscope, and analyzing and counting to obtain the quantitative ratio of the ferrite content to bainite to residual austenite mixed tissue by using the scanning electron microscope according to a quantitative metallographic method through Image-ProPlus software; thirdly, carrying out XRD (X Ray Diffraction) atlas analysis on the same metallographic specimens to determine the content of residual austenite in the polyphase structure; fourthly, finally determining the phase proportions of various tissues in the TRIP steel by combining the quantitative analysis result of the SEM with the measurement result of the XRD. Compared with the prior art, the tissue quantitative analysis method disclosed by the invention has the advantages of simplicity and convenience in operation and accurate measurement.

The invention discloses a novel large-scale power energy storage device, which belongs to the technology of electrochemical energy storage. The device mainly comprises an electrolytic hydrogen making system, a hydrogen storage system, an oxygen storage system, a water system, an alkaline fuel cell power generation system, an alternative current (AC)/direct current (DC) conversion system, a direct current (DC)/alternative current (AC) conversion system and corresponding control systems, wherein the electric energy is directly converted to be chemical energy which is stored in the hydrogen and oxygen storage systems respectively; at the peak of power grid load, the stored hydrogen and oxygen convert the chemical energy into electric energy directly by the alkaline fuel cell power generation system for supplying electricity; and the water consumed by the whole device in the electrolytic process can be recycled through the water generated in the power generation process of the fuel battery. The large-scale power energy storage device provided by the invention has the advantages of large capacity, long service life, low cost, environmental friendliness and the like; and the technologies of the main component parts are more mature, so that the device has an extremely broad application prospect in the electrical field.

The invention relates to a low-melting-point thermoplastic solid propellant and a preparation method thereof, and belongs to the technical field of composite solid propellants. The propellant is prepared from the following components by mass percent: 55%-70% of oxidant, 10%-20% of thermoplastic elastomer binder, 10%-20% of plasticizer, 5%-20% of metal fuels and 3%-8% of auxiliaries. The prepared low-melting-point thermoplastic solid propellant has the advantages that melting mixing and forming of the thermoplastic propellant at a relatively low temperature lower than 95 DEG C can be realized,process safety of thermoplastic propellant preparation is greatly improved, a curing and cross-linking process in comparison with a thermoplastic propellant is cut out, process flow is shortened, production efficiency is improved, production cost is reduced and repeated processing of waste products can be realized.

The invention discloses an intelligent steel arch frame assembling robot. The intelligent steel arch frame assembling robot comprises a transporting system, an assembling system, an installing systemand a slag clearing system. The slag clearing system is installed on the lower end surface of a main beam of a hard-rock tunnel boring machine (TBM, for short). The transporting system comprises a transporting trolley and a transporting track. The transporting track is fixed to the upper end face of the TBM main beam. The transporting trolley reciprocates on the transporting track to transport assembling annular pieces into an assembling annular channel of the assembling system. The assembling annular channel is installed on a supporting seat of a supporting ring and rotates on the supportingseat. The supporting ring is installed at the side end of the TBM main beam. A mechanical arm of the installing system is matched with the assembling annular pieces on the assembling annular channel,and the assembling annular pieces are assembled together. The mechanical arm is installed on an installing track through a base in a rolling mode. The installing track is fixed to the side end of theTBM main beam and is parallel to the assembling annular channel. According to the intelligent steel arch frame assembling robot, intelligent installing is achieved, manpower is liberated, the installing quality and stability are improved, the technical maturity is high, and cooperating and efficient operation of a single mechanical arm or multiple mechanical arms is achieved.

The invention relates to the technical field of construction and conservation of highway bridges, in particular to a lateral prestress application method for paving reinforcing bar concrete on a bridge floor of an assembled type bridge. According to the prestress application method disclosed by the invention, lateral prestress is applied for paving the reinforcing bar concrete on the bridge floor of the assembled type bridge, so that the lateral connection of the bridge is strengthened, the lateral completeness is improved, the lateral load distribution capacity is improved, and the service life of the paved bridge floor is prolonged. Examination, re-pulling and reinforcing are convenient, the prestress loss of steel strand wires is convenient to examine, and if the loss of the steel strand wires is found, tensioning reinforcing can be performed at any time. The method, materials and construction machines and tools are simple, technique maturity is high, and the method is easy to master, and convenient to popularize and apply.

The invention discloses a measuring device for thrust loading of a sliding thrust bearing. The measuring device comprises an annular base plate, wedge-shaped sliding blocks and resistance strain type force meters. The annular base plate is coaxially arranged between a thrust block holder and a thrust bearing shell in a sleeved mode. A plurality of radial holes are formed in the circumferential direction of the peripheral end face of the annular base plate. Through holes communicated with the radial holes are formed in the positions, corresponding to the radial holes, of the shell. The wedge-shaped sliding blocks are contained in the radial holes in the annular base plate through the through holes in the shell, and can be pulled out of the shell from the radial holes through the shell. The resistance strain type force meters are contained in the sliding blocks, and one end of each resistance strain type force meter abuts against and is connected with the thrust block holder. The invention further discloses a measuring device for the thrust loading of the sliding thrust bearing, and the application of the measuring device and method. According to the device and the method, the structure of the thrust bearing is slightly modified, and particularly the supporting structure of a thrust block is not changed; the lubrication performance of the thrust bearing is not affected, and the risks of safety running of the thrust bearing are not increased; meanwhile, the force meters can be easily overhauled and replaced under the condition that the shell of the thrust bearing is not disassembled.

The invention discloses a self-feeding four-arm spiral GPS satellite signal receiving antenna, which comprises: a feeding rod, a socket, a dielectric sleeve, a mounting flange, a feeding pipe, a helical wire, an inner conductor; two ends of the helical wire and the feeding pipe Welded together; the rear end of the feed pipe is inserted into the round hole of the mounting flange; the inner conductor located in the center of the feed pipe, the left end is welded on the feed pipe, and the right end is connected to the feed rod through threads; the feed rod rests on the medium in the socket The sleeve is fixed in the socket; the socket is the feed port of the antenna, and the high-frequency cable is connected to feed the antenna. The invention simplifies the system structure and improves the system reliability.

The invention discloses a semi-submersible floated draught fan foundation adopting a rotor mooring system and a draught fan. The semi-submersible floated draught fan foundation comprises a semi-submersible floating platform and the rotor mooring system, wherein the semi-submersible floating platform is fixedly connected with a draught fan main body and used for floating the draught fan on the sealevel; and the rotor mooring system comprises a rotor part and a stator part which can rotate relative to each other, the rotor part is fixedly connected with the semi-submersible floating platform, the stator part is moored to the seafloor through anchor chains, and the rotor part drives the semi-submersible floating platform to rotate freely around the central axis of the rotor mooring system together. The semi-submersible floated draught fan foundation is suitable for the conventional water depth range of about 50 m in China, and has the wind vane effect that can adjust a foundation azimuthangle according to the environmental load of the draught fan foundation, and thus the actual demand of the current domestic offshore wind farm development is met.

The invention relates to high-strength and high-toughness thick-plate structural steel for the low temperature and a heat treatment method thereof. The steel is prepared from 0.03%-0.08% of C, 0.8%-1.9% of Cr, 0.01%-1.0% of Mn, 3.5%-7% of Ni, 0.2%-0.5% of Mo, 0.15%-0.2% of V, 0.01%-0.05% of Nb, 1.2%-3.8% of Cu, 0-0.5% of Al, less than or equal to 0.015% of P, less than or equal to 0.010% of S andthe balance Fe and inevitable impurities. Compared with the prior art, steel plates prepared from the steel can be used at the temperature ranging from subzero 20 DEG C to subzero 120 DEG C and at thelower temperature being subzero 196 DEG C and can keep the relatively high strength and certain toughness, and the technical problems that existing high-strength and high-toughness hardened and tempered steel cannot meet requirements of equipment for resource and energy development, transportation and the like in polar regions are mainly solved.

This invention discloses optical s/n ratio monitor method of WDM and its device relating to an optical s/n ratio monitor technology of WDM and OADM transmission system. The device has an independent type, a type of wave synthesizer composed of signals, noise separation/noise filter module, WDM channel optical power monitor, photoelectric detecting diode/log amplified circuit, monolithic device and its data collection interface, optical coupler, an optical divider, a OADM and a optical synthesizer. The signal, noise separation/noise filter module in types of front end, rear mount and parallel is composed of a film optical filter plate/fiber grating filter.

The invention discloses a sea ice solid eccentric desalinating method, which comprises the following steps: adopting sea ice; filling ice halogenation compound; proceeding sea ice eccentric desalination; desalinating ice-crystal.

The invention relates to a time correlation calculation gravimeter and a measurement method. The time correlation calculation gravimeter comprises a digital micromirror array (DMD), a lens, a controller, a first beam splitter, a stress sensor, a prism to be dropped, a reference prism, a second beam splitter, a CCD or a point detector, a coincidence measurement logic module, a delayer and an atomic clock, wherein the coincidence measurement logic module comprises a coincidence measurement logic unit and a calculation unit. The coincidence measurement logic unit carries out time coincidence measurement logic calculation on two paths of signals through adjusting time delay of the delayer so as to acquire a time delay difference value, and gravity acceleration g is calculated by being combined with moments recorded by the atomic clock at initial and final positions. The gravimeter provided by the invention can effectively reduce a measurement error caused by air disturbance factors, and has the advantages of simple structural design, high realizability and the like.

The invention discloses production and installation methods for a concrete embossment decorative plate. The production method comprises the steps of lofting and decomposition of unit embossment bodies, manufacturing of a unit gypsum male die plate, coating of die releasing wax, concreting to form a female die plate, coating of silica gel on the female die plate, forming of a silica gel isolation layer, manufacturing of steel frame meshes, fixing of embedded parts and hoisting hooks, pouring of fine aggregate concrete and manufacturing of the moulded concrete embossment decorative plate. The installation method comprises the steps of measurement and lofting, machining and installation of supplementary embedded parts on an upper cross beam and a lower cross beam of a building, installation of connectors, steel stand columns and the cross beams, installation and fixation of the concrete embossment decorative plate on a metal framework, throwing of sealing gum, and spraying of metal fluorocarbon coating on the outer surface. The methods are low in total investment and rapid in construction effect, greatly reduce the project manufacturing cost and have great economic benefits and popularization prospects. The decoration project completed through the methods is spectacular, exquisite in pattern, strict in structure and perfect in workmanship.

The invention provides an electromechanical brake driver of an aircraft. A power supply part supplies power to a force sensor, a position sensor, a control circuit and a driving circuit in an isolated way; and the control circuit receives an instruction brake force signal, a force feedback signal of the force sensor and a motor rotor position signal transmitted from the position sensor and outputs 6-path PWM signals to the driving circuit, so as to achieve substantial rotation and over-current protection control of a brushless direct current motor. The electromechanical brake driver of the aircraft, provided by the invention, has the advantages that electromagnetic compatibility of the brake driver is enhanced, mature principle and high technical maturity are obtained and the reliability of the brake driver is enhanced.

The invention relates to a fan-out type packaging structure and a packaging method, in particular to a fan-out type packaging structure based on multiple layers of chips of an organic substrate and a packaging method, and belongs to the technical field of microelectronic packaging. According to the technical scheme, the fan-out type packaging structure based on the multiple layers of chips of the organic substrate comprises a lower organic core board. The chips are laminated on the lower organic core board through dielectric layers, supported in the lower organic core board and located in the dielectric layers. Welding balls electrically connected with the chips are arranged above the dielectric layers. A heat-dissipating column is arranged in the lower organic core board, penetrates through the lower organic core board, and makes contact with the chips adjacent to the lower organic core board. The packaging structure is compact, high in packaging integration degree, suitable for large-scale mass production, safe and reliable, and reduces the packaging cost, and the process is convenient to operate.

The invention discloses a Tiantong satellite-borne terminal Doppler frequency compensation device and method, and belongs to the field of satellite communication. The method mainly comprises the following steps that: firstly, a terminal searches an FCCH (Frequency Control Channel) signal at a specified frequency point, estimates a signal-to-noise ratio, searches a frequency point with the best signal-to-noise ratio, estimates the signal-to-noise ratios of a resident beam and an adjacent beam FCCH channel in real time, and outputs frequency information of the resident beam FCCH channel; reading ephemeris information and a Tiantong orbital motion information file to obtain ephemeris information and Tiantong orbital motion information at the current moment; calculating a Doppler frequency offset value and a Doppler frequency offset change rate according to resident beam FCCH channel frequency information in combination with ephemeris information and Tiantong orbital motion information; and finally, compensating an uplink signal and a downlink signal of the terminal according to the Doppler frequency offset value and the Doppler frequency offset change rate. According to the invention, the problem of distortion of signals received by the satellite-borne terminal caused by large Doppler frequency offset can be solved, so that reliable communication between the satellite-borne terminal and the Tiantong satellite can be ensured.

A time correlation calculation diastimeter and a measuring method are provided. The time correlation calculation diastimeter includes a light source, a digital micromirror array DMD, a controller, a beam splitter, a lens, a semi-transmitting semi-reflecting mirror, a to-be-tested part reflective mirror, a CCD (or a point detector), a time delay unit, and a coincidence measurement logic module; the coincidence measurement logic module includes a coincidence measurement logic unit and a calculation unit. The coincidence measurement logic unit performs time coincidence measurement logic calculation on two channels of signals, and finally the distance between the to-be-tested part reflective mirror and the semi-transmitting semi-reflecting mirror is obtained. The diastimeter utilizes a time second-order correlation characteristic, can effectively reduce the distance measurement error caused by air disturbance factors, is simple in structural design and high in maneuverability, has key components all based on existing mature products, and has the characteristics of high technical maturity, relatively high realizability and the like.

The invention relates to an offshore wind power uncontrolled rectification direct-current power transmission system which comprises an offshore wind power plant, an offshore converter station, a seabed direct-current submarine cable, an onshore converter station and an onshore power grid. The alternating current side of the offshore wind plant is connected with the alternating current side of the offshore converter station through an offshore alternating current bus, and the direct current side of the offshore converter station is connected with the direct current side of the onshore converter station through positive and negative pole direct current submarine cables; the alternating current side of the onshore converter station is connected with the onshore power grid; the offshore converter station comprises a full-bridge MMC unit and a diode uncontrolled rectification unit. The full-bridge MMC unit is used for providing a starting power supply or grid-connected voltage for the offshore wind power plant when the offshore wind power plant is black-started or runs normally; and the diode uncontrolled rectification unit is used for rectifying the electric energy output by the offshore wind plant and then transmitting the rectified electric energy to the onshore converter station. The method can be widely applied to the technical field of flexible direct current transmission.

An in-situ resource treatment system utilizing static conveying and condensation molten sintering comprises a static conveying sub system and a condensation molten sintering sub system, and assemblingand position regulation of the two sub systems are achieved through a three-dimensional support. The static conveying sub system achieves orientation control movement of soil particles through conservative static force, and the condensation molten sintering sub system forms and controls focused spots to burn and melt the soil particles through a solar light condensation device and a light guidingdevice. According to the in-situ resource treatment system, the unique soil particle static conveying sub system is introduced, the energy consumption of soil particle conveying is small, and the control accuracy is high; and through the unique condensation molten sintering sub system, in-situ solar light efficient convergence and effective transmission are achieved, the energy utilization efficiency is high, the controllability in the treatment process is high, the system overall principle is simple and feasible, the structural design is ingenious, the quality power consumption cost is low,and the reliability is high.