Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

84results about How to "Expand scope" patented technology

Matrix-existing high-entropy alloy and preparation method thereof

ActiveCN108642399AExpand contentExpand scopeBreaking strengthHigh entropy alloys
The invention provides matrix-existing high-entropy alloy and a preparation method of the matrix-existing high-entropy alloy, and relates to the high-entropy alloy and the preparation method. The matrix-existing high-entropy alloy and the preparation method of the matrix-existing high-entropy alloy are designed to solve the problems that existing high-entropy alloy is poor in mechanical property,a large brittle intermetallic compound phase exists in the high-entropy alloy, and the plasticity is poor. The matrix-existing high-entropy alloy is formed by 50%-90% of alloy matrixes and 10%-50% ofalloying elements in a preparation mode according to the mass percentage. The method comprises the steps that firstly, raw materials are prepared; and secondly, the raw materials, weighed and taken inthe first step, of the matrix-existing high-entropy alloy are subjected to smelting by use of an electric arc smelting method or an induction smelting method, so that the matrix-existing high-entropyalloy is obtained. The yield strength of the prepared matrix-existing high-entropy alloy ranges from 1000MPa to 2000MPa, the breaking strength of the prepared matrix-existing high-entropy alloy ranges from 2000MPa to 4000MPa, the ultimate strain epsilon P (%) of the prepared matrix-existing high-entropy alloy ranges from 20% to 70%. The matrix-existing high-entropy alloy can be obtained.
Owner:HARBIN INST OF TECH

Splitting twisting-boosting type vortex spinner

The invention belongs to the technical field of textile processing and relates to a splitting twisting-boosting type vortex spinner which is used for feeding fiber bundles into a vortex spinning area on a spinning machine in a splitting manner and boosts twisting for the fiber bundles in vortex spinning. The splitting twisting-boosting type vortex spinner is of a structure with a splitting feeding channel and a twisting-boosting device, a structure of a traditional vortex spinner with a single feeding channel and a single static spindle is improved, a vortex spinning mode of single-channel fiber feeding and static spindle pure vortex twisting of the traditional vortex spinner is changed, active holding type twisting is carried out for fiber bundles in the splitting channel, boosted twisting is carried out for fiber bundles guided in by the outer wall of a guide needle during vortex wrapping and winding, fiber control during vortex spinning is enhanced, requirement limit on number of fibers included in a fiber bundle and cohesive force during traditional vortex spinning is broken through, spinnable fiber variety and spinnable yarn count range of the vortex spinning technology are expanded. The splitting twisting-boosting type vortex spinner is reasonable in structure and convenient to use and operate.
Owner:WUHAN TEXTILE UNIV

High-pressure cooling stage device for in-situ observation of particle size distribution of gas hydrate and application method

The invention discloses a high-pressure cooling stage device for in-situ observation of particle size distribution of a gas hydrate. The device cooperates with a laser particle size analyzer to finish measurement of the particle size and particle size distribution of a gas hydrate crystal in fluid; the device comprises a high-pressure resistant perspective bin, a high-pressure resistant reaction bin, a temperature control system, a pressure control system and a computer data acquisition system. The device disclosed by the invention is adopted as an accessory device of the laser particle size analyzer, the application and measurement condition range of an existing laser particle size analyzer is expanded, so that the device can measure the particle size and particle size distribution of solid-liquid two-phase fluid in a high-pressure and low-temperature environment. The measurement method is simple, and the measurement precision is far higher than that of similar experimental devices developed by other countries. The device disclosed by the invention plays an important guiding role in quantitatively analyzing the processes such as generation and decomposition of the gas hydrate and revealing related dynamics mechanism of the gas hydrate.
Owner:理化联科(北京)仪器科技有限公司

Halogen-free water-soluble flux with weak acidity and low corrosion

The invention discloses a halogen-free water-soluble flux with weak acidity and low corrosion, which comprises the following components in percentage by weight: 3 to 8 percent of organic acid and organic amine active agent, 0.5 to 2 percent of halogen-free surfactant, 1 to 15 percent of cosolvent, and the balance of deionized water. A preparation method comprises the following steps of: weighing the organic acid and organic amine active agent, the halogen-free surfactant and the cosolvent, putting the deionized water and the organic acid active agent into a stirring kettle, uniformly stirring, sequentially adding the cosolvent and the halogen-free surfactant in the stirring process, and uniformly stirring to obtain a finished product. Compared with the conventional water-soluble flux, the halogen-free water-soluble flux has the advantages that: 1, the flux has weak acidity and low corrosion, and small damage to welding equipment and appliances, improves production efficiency and reduces production cost; and 2, the flux does not contain halogens at all, so that a printed circuit board has high electric property, high reliability and long service life and meets the halogen-free requirement after being welded, and the application field and application range of the water-soluble flux are greatly expanded.
Owner:PERFECTION SCI & TECH DONGGUAN

Double-optical-comb multi-frequency-multiplication-factor frequency spectrum spread frequency modulation signal generation system and implementation method thereof

The invention provides a double-optical-comb multi-frequency-multiplication-factor frequency spectrum spread frequency modulation signal generation system and an implementation method thereof. A laserand a direct digital synthesizer provide optical carriers and linear frequency modulation signals for a frequency multiplication module. The frequency multiplication module realizes photoelectric conversion and frequency multiplication of electric signals, the optical frequency comb module generates five-line optical frequency combs. Five paths of optical signals are respectively injected into the five PDs connected in parallel for photoelectric detection, the obtained electric signals are subjected to frequency spectrum splicing, and 10/20 frequency multiplication linear frequency modulationsignal frequency spectrum expansion can be realized. According to the invention, the generation of high-frequency and large-bandwidth linear frequency modulation signals is effectively realized, andthe method has the characteristics of simple structure, frequency agility and small channel interference. Microwave photonics technology is adopted to fuse the multi-frequency multiplication technology and the optical frequency comb technology so that the range of the carrier frequency and the bandwidth of an original linear frequency modulation signal is expanded, and the requirements for the frequency and the bandwidth of the linear frequency modulation signal are remarkably reduced.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

High-sulfur-content polymers for positive electrode of lithium-sulfur battery and preparation method of high-sulfur-content polymers

The invention relates to high-sulfur-content polymers for a positive electrode of a lithium-sulfur battery and a preparation method of the high-sulfur-content polymers. The preparation method comprises the following steps: adding elemental sulfur into a narrow-neck bottle or a beaker filled with a magnetic stirring bar; then heating the narrow-neck bottle or the beaker in a constant temperature oil-bathing pot until a clear orange melting phase is formed; adding thiophene diene monomers into melt sulfur; stirring an obtained mixture at the temperature of 185 to 205DEG C; after a reaction mixture is cooled to room temperature, moving out the magnetic stirring bar, and directly scrapping a product from the bottle. According to the polymers obtained by the method provided by the invention, active sulfur and organic molecules are connected by chemical bonds in a molecular structure; when the polymers are used for a positive electrode material of the lithium-sulfur battery, the dissolving of polysulfide in electrolyte is effectively inhibited, and the problem like greater volume expansion in an electrochemical reaction process of the elemental sulfur is avoided; meanwhile, when a conjugated structure connected by a plurality of thiophene rings is used as the positive electrode material, the transmission of electrons is facilitated, and a new material is provided for the positive electrode material of the lithium-sulfur battery.
Owner:TIANJIN UNIV

Precision target system for near field target calibration of camera with large field of view and method

The invention discloses a precision target system for near field target calibration of a camera with a large field of view and a method. The precision target system comprises a base with a gantry frame, an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism, a target, a target surface, a turntable, a pitching table and a camera under test, and is characterized in that the X-axis motion mechanism, the Y-axis motion mechanism and the Z-axis motion mechanism are arranged on the base; the whole Z-axis is driven by an X-axis to move transversely; the target is fixed on the Z-axis to achieve vertical movement, and the target surface is mounted on the front of the target; the turntable is mounted on a Y-axis to achieve movement along the Y-direction; the pitching table is fixed on the table surface of the turntable; and the camera under test is fixed on the table surface of the pitching table. When the precision target system is in operation, an appropriate target surface is mounted, and the system is powered; the camera is enabled to directly faces the target surface by a certain distance through adjusting the components, then the turntable, the pitching table and the Y-axis are fixed; and the position of the target surface is adjusted through the X-axis and the Z-axis, and calibration for different fields of view of the camera under test is realized. The precision target system realizes near-field target calibration for a camera with two wavebands and various large fields of view through combining the small-size precision target and the multi-axis precision numerical control system, and improves the target calibration efficiency.
Owner:西安应用光学研究所

Word processing system with fault tolerance function and method

A work processing system with the fault tolerance function comprises an input module, a character fault tolerant table, a fault tolerance processing module, a word stock, a word search module, a distribution module and an output module, wherein, the input module is marked with a first character; the character fault tolerant table comprises a first character and a second character which is fault-tolerant of the first character; the fault tolerance processing module is used for finding out the second character which is fault-tolerant of the first character in the character fault tolerant table; the word stock is used for storing words; the word search module is used for finding out the words formed by the second character in the word stock; the distribution module is used for classifying the words; the output module is used for outputting the words which are found out; fault tolerant relations are set up between one or more first characters and one or more second characters. By adopting the fault-tolerant input technology, setting up the mutual fault tolerant relations between the input characters and the output characters and associating the fault tolerant relations with the position relations among the characters on the input module, correct output is not affected by mis-pressing other characters because of incaution in the process of inputting characters, thereby increasing the precision rate of character input. The invention also provides a use method adopting the system.
Owner:GUANGDONG GUOBI TECH

Experimental device and experimental method for cylindrical isentropic compression

The invention discloses an experimental device and an experimental method for cylindrical isentropic compression. The experimental device comprises a cylindrical implosion magnetic flux compression generator; the cylindrical implosion magnetic flux compression generator comprises a metal sleeve, wherein two fixed coils are symmetrically arranged on the outer side of the metal sleeve; an explosive ring is arranged between the two coils; a synchronous detonating network is arranged on the outer side of the explosive ring; a cylindrical isentropic compression target is arranged in a metal sleeve; a laser speed measurement probe is mounted in the cylindrical isentropic compression target. According to the experimental device and the experimental method, the method for measuring the compression degree of a material in prior art is changed by designing a novel cylindrical isentropic compression target; a complex flash photography device is not required; the technical difficulty of measurement is greatly reduced; the cost of equipment is also reduced; the laser speed measurement technology involved in the invention is the standard measurement technology in the compression scientific field at present; the technology is mature and reliable; the measurement precision can reach 1 to 2 percent; therefore, the precision of the measurement data is greatly improved.
Owner:INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS

System and method for testing performance of underwater non-dispersible slurry in water conservancy and hydropower engineering

PendingCN112198301AThe test plan is scientific and reasonableClose to engineering applicationFlow propertiesPreparing sample for investigationWater flowSlurry
The invention provides a system and a method for testing the performance of underwater non-dispersible slurry in water conservancy and hydropower engineering. The testing system comprises an upper opening type transparent water tank, a grouting funnel, a test beaker and a test mold, an overflow hole is formed in the upper portion of the transparent water tank, a stirrer and a heating element are arranged in the transparent water tank, and the grouting funnel is erected above the middle of the transparent water tank through a funnel support. The system can control the water temperature, the water flow state and the feeding and water inlet positions, and can simulate the field environment to test the underwater expansion degree, the underwater coagulation time and the underwater compressivestrength of underwater non-dispersed slurry and the suspended matter content and the pH value of a water body. According to the method, different test environments are customized in a personalized mode, the field working condition is simulated, the test scheme is scientific and reasonable, the dispersion resistance, the mixture performance and the mechanical performance of the underwater non-dispersible slurry are compared and analyzed through multiple quantitative indexes, and technical support is provided for scheme comparison and selection, true performance evaluation and the like of the underwater non-dispersible slurry.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Hybrid permanent magnet memory starter/generator and operation method thereof

The invention discloses a hybrid permanent magnet memory starter/generator and an operation method thereof, and belongs to the field of permanent magnet synchronous motors. Hybrid permanent magnet memory starter/generator comprises a hybrid permanent magnet rotor, a stator iron core, armature windings, air gaps and a rotating shaft. Two sets of windings are wound on the stator iron core in the same groove and in the same direction to jointly form an armature winding which is also used for adjusting magnetism; the two sets of windings work in a series or parallel state as required; a high-coercivity permanent magnet, a low-coercivity permanent magnet and a triangular magnetic barrier are arranged on the hybrid permanent magnet rotor; two tangentially magnetized low-coercive-force permanent magnets and two radially magnetized high-coercive-force permanent magnets are arranged below each magnetic pole of the hybrid permanent magnet rotor to form a W-shaped structure; and a triangular magnetic barrier is arranged at the junction of each low-coercivity permanent magnet and each high-coercivity permanent magnet. The motor adopts alternating-current pulse magnetic adjustment; when magnetic adjustment is needed, the armature winding is used for applying magnetic adjustment pulses; the permanent magnets are placed on the motor rotor; and the motor is simple in structure, easy and convenient to machine and manufacture, and the technology is mature.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Playing authentication method and playing authentication system

The invention discloses a playing authentication method and a playing authentication system. The method comprises the following steps: a playing authentication server receives a first playing authentication request which is sent by a client side and aims at a program; parsing the first playing authentication request, and acquiring a client side identifier of the client side and a program identifier of the program; judging whether to charge according to the program identifier; if so, inquiring whether an effective ordering record corresponding to the client side identifier exists in client ordering records created in advance; if the effective ordering record is inquired, matching the effective ordering record with the program identifier to generate an authentication result, and returning the authentication result back to the client side; if the effective ordering record is not inquired, returning the authentication result back to the client side and indicating payment. The playing authentication method claimed in the invention provides various configurable charging strategies for operation of content providers at an operator platform, reduces playing operational processes, guarantees real-time property of playing of competitions and guarantees stability and easy-to-maintain property of the system.
Owner:SUNING INTELLIGENT TERMINAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products