Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8. Отображено 8.
13-06-2023 дата публикации

Simulation method for pressure parameters of nuclear turbine

Номер: CN116257943A
Автор: GUAN JUEXIN, SHI ZHENHAO, LIU XIAOTIAN, TANG MINJIN, XIA XIANXI, YANG LUKUAN, LAI YUNTING, ZUO DUNGUI, JIN XIAO, ZHU BAOYIN
Принадлежит:

The invention discloses a nuclear turbine pressure parameter simulation method which comprises the following steps: in the speed increasing and load increasing process of a nuclear turbine, discretization sampling is carried out on original real data, and the function relation between the rotating speed and the load and the real-time pressure value of the nuclear turbine is obtained in a logic curve fitting mode; real starting process data of the nuclear turbine is adopted as an initial value for simulation of a simulator, the simulator obtains pressure disturbance values under different theoretical working conditions by controlling a regulating valve, and the pressure disturbance values are corresponding pressure fluctuation quantities under the same working condition. And superposing the pressure real-time value and the pressure disturbance value which are associated to obtain a final pressure value under a corresponding actual working condition, and taking the final pressure value as ...

Подробнее
Номер записи: 1
18-07-2023 дата публикации

In-situ test method for shear stress of material under double-beam system

Номер: CN116448793A
Автор: WANG JI, NIE WENRUI, ZHANG XIANCHENG, ZHANG YONG, WANG WEI, LI KAISHANG, WANG RUNZI, XIA XIANXI, YAN YABIN, TU SHANDONG
Принадлежит:

The invention discloses a material shear stress in-situ testing method under a double-beam system, and relates to the technical field of shear stress testing, and the method comprises the following steps: 1, analyzing a sample block from an electron beam perspective, and determining a processing area through ion beam imaging; 2, processing the morphology of the micro-block by using an ion beam; 3, the manipulator assists in extracting and finishing the micro-blocks; step 4, depositing a microblock by using an ion beam; 5, processing and shearing the sample by using an ion beam; and 6, carrying out a pure shear test from an electron beam view angle. The invention provides the method for measuring the critical shear stress of the metal material with the specific structure on the micro-nano scale, and important support is provided for regulating and controlling plastic deformation of the metal material.

Подробнее
Номер записи: 2
07-04-2023 дата публикации

Electric power high-temperature part damage state judgment method based on correction time fractional method

Номер: CN115931532A
Автор: ZHANG TIANYU, WANG XIAOWEI, XIA XIANXI, ZHANG XIANCHENG, JIANG YONG, GONG JIANMING
Принадлежит:

The invention discloses an electric power high-temperature part damage state judgment method based on a correction time fractional method. The method comprises the steps that a plurality of samples made of the same material are obtained and divided into three parts; performing a fatigue test on the first part of the sample, performing a creep test on the second part of the sample, and performing a creep fatigue test on the third part of the sample; acquiring a fatigue damage parameter based on the fatigue test data, and acquiring a creep damage parameter based on the creep test data; determining fatigue damage based on the fatigue behavior of the creep fatigue test, and determining creep damage based on the creep behavior of the creep fatigue test; predicting the cycle life of the creep fatigue sample based on the fatigue damage and the creep damage; and judging the total damage state of the electric power high-temperature part at any moment based on the accumulated fatigue damage and the ...

Подробнее
Номер записи: 3
23-06-2023 дата публикации

Safety evaluation method for outer surface defects of steam pocket barrel

Номер: CN116296922A
Автор: ZHU BAOYIN, LUAN GAOCAN, FU YANGYANG, TANG MINJIN, JIN XIAO, MA QINZHENG, XIA XIANXI
Принадлежит:

The invention discloses a steam drum outer surface defect safety evaluation method, which comprises the following steps: carrying out fracture and plastic failure evaluation on steam drum outer surface defects, if the fracture ratio of the defects and the ratio of applied load to rheological strength load are in respective preset threshold ranges, carrying out defect fatigue evaluation, and otherwise, carrying out defect fatigue evaluation. If so, directly judging that the current repair is needed; in defect fatigue evaluation, according to a relational expression between a fatigue crack propagation rate and a stress intensity factor change range of a crack tip, a final crack propagation size of fatigue propagation and a corresponding allowable cycle index are calculated, and if an expected cycle index before next overhaul of the steam drum body is smaller than the allowable cycle index, the steam drum body is subjected to defect fatigue evaluation. If yes, it is judged that the current ...

Подробнее
Номер записи: 4
07-04-2023 дата публикации

Sampling method and analysis method for internal cracks of welded joint

Номер: CN115931422A
Автор: ZUO DUNGUI, YANG LEI, CHEN YUXI, MIAO LONG, GU HAO, ZHANG ZHONGWEI, LAI YUNTING, LI YAN, LEE SANG-WOOK, ZHAO PENGFEI, ZHU BAOYIN, XIA XIANXI, JIN XIAO, TANG MINJIN, MA QINZHENG, LUAN GAOCAN, YANG LUKUAN, FU YANGYANG
Принадлежит:

The invention discloses a welding joint internal crack sampling method which comprises the following steps: acquiring the position and the size of an internal crack in a welding joint, and setting an integral sampling area and a metallographic sampling area according to the position and the size; taking out the whole sampling area from the pressure container, and then taking out the metallographic-phase-containing sampling area from the whole sampling area to obtain a sample; the cross sections of the two opposite sides of the sample are polished and etched until cracks appear on the surfaces of the cross sections; setting a fracture sampling area according to the position and the size of the crack, taking out the fracture sampling area from the sample to obtain a fracture sampling sample, and opening the crack in the fracture sampling sample. According to the sampling method for the micro-cracks in the welding joint, the positions of the micro-cracks in the welding joint of a thick-wall ...

Подробнее
Номер записи: 5
23-06-2023 дата публикации

Preparation method of metallographic specimen of copper-aluminum wiring terminal joint

Номер: CN116296656A
Автор: ZUO DUNGUI, YANG LEI, CHEN YUXI, MIAO LONG, GU HAO, ZHANG ZHONGWEI, LAI YUNTING, LI YAN, LEE SANG-WOOK, ZHAO PENGFEI, ZHU BAOYIN, XIA XIANXI, JIN XIAO, TANG MINJIN, MA QINZHENG, LUAN GAOCAN, YANG LUKUAN, FU YANGYANG
Принадлежит:

The invention discloses a preparation method of a metallographic sample of a copper-aluminum wiring terminal joint, which comprises the following steps: a copper-aluminum wiring terminal is cut in half along the length direction to obtain a metallographic sample, and the sample comprises an aluminum part and a copper part which are connected with each other; the sample is polished; respectively preparing an aluminum part metallographic etchant and a copper part metallographic etchant, respectively corroding the aluminum part and the copper part of the polished sample, and cleaning and drying after corroding to obtain the metallographic sample; the grinding comprises accurate grinding, and the accurate grinding is to polish the sample by adopting polishing equipment. According to the preparation method of the metallographic specimen of the copper-aluminum wiring terminal connector, a polished sample of copper-aluminum dissimilar metal can be effectively obtained, and the influence of scratches ...

Подробнее
Номер записи: 6
15-10-2014 дата публикации

Real wall temperature testing system for high-temperature heating surface tube of thermal power unit and manufacturing process

Номер: CN104101441A
Автор: ZHAO YANFEN, ZHANG GUODONG, XUE FEI, ZHANG LU, XIA XIANXI, MA QINZHENG, LAI YUNTING, GENG BO, GUO HONGMEI, MENG XINMING
Принадлежит:

The invention discloses a real wall temperature testing system for a high-temperature heating surface tube of a thermal power unit and a manufacturing process. The real wall temperature testing system comprises a thermal couple, a heat collecting block, a protective casing, hoops and a heat-insulating material, wherein at least one thermocouple is provided, and is inserted into the protective casing; one end of the thermocouple is welded on a tube wall, and the other end of the thermocouple is fixed outside a boiler and is connected with a wiring box outside the boiler after being led out; the periphery of the heat collecting block is welded on the tube wall where a thermocouple welding portion is positioned; the heat collecting block is used for fixing the thermocouple and transferring heat rapidly; the heat-insulating material wraps the periphery of the heat collecting block and is fixed through the hoops. By directly welding the thermocouple on the tube wall of the boiler for directly ...

Подробнее
Номер записи: 7
18-07-2023 дата публикации

Universal swinging telescopic tapping head

Номер: CN116441646A
Автор: XIA XIANXI
Принадлежит:

The universal swing telescopic tapping head comprises an upper shaft, a lower shaft, a lower shaft and a connecting rod, a connecting rod is formed at one end of the upper shaft and used for being connected with tapping equipment, and a butt joint end is formed at the other end of the upper shaft; one end of the lower shaft is movably connected with the butt joint end, the lower shaft can axially incline after being subjected to radial force, and a screw tap is assembled at the other end of the lower shaft; the two ends of the reset mechanism are arranged on the upper shaft and the lower shaft in a sleeving mode respectively, and after the lower shaft inclines in the axial direction, the reset mechanism provides elastic support towards the axis direction of the upper shaft for the lower shaft. According to the technical scheme, tapping machining can be conducted on a machining hole with an inclined axis, the inclined lower shaft can be reset after machining is completed, meanwhile, the ...

Подробнее
Номер записи: 8