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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 17. Отображено 17.
23-06-2023 дата публикации

Ceramic spray pipe

Номер: CN116273622A
Автор: XU TAO, ZENG XIAOFENG, XIAO LI, WEN JINTAO, CHEN JIE
Принадлежит:

The invention discloses a ceramic spray pipe which comprises a connector, a pipe body and a nozzle pressure adjusting mechanism, the connector is arranged at the water inlet end of the pipe body, the material of the connector is different from that of the pipe body, and annular anti-rotation teeth and annular dovetail grooves are arranged on the outer surface of the connector in the radial direction and embedded in the inner wall of a water inlet pipe of the pipe body in an injection molding mode. Therefore, the connector and the pipe body which are made of different materials can be in better transition connection, good mutual coherence and sealing performance are achieved, and leakage of the water inlet end can be effectively prevented in the using process. And meanwhile, the pipe body is arranged into an inner pipe and an outer pipe which are integrally formed through injection molding and demolding, the pressure of the nozzle can be conveniently adjusted, the nozzle pressure adjusting ...

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Номер записи: 1
08-08-2023 дата публикации

Ultrahigh-temperature vacuum-resistant silicon nitride ceramic material and preparation method thereof

Номер: CN116553936A
Автор: ZENG XIAOFENG, XIAO LIANG, ZHU FULIN, QIAN LIHONG, XU TAO
Принадлежит:

The invention provides an ultrahigh-temperature vacuum-resistant silicon nitride ceramic material and a preparation method thereof, and belongs to the technical field of silicon nitride ceramics. The ultrahigh-temperature vacuum-resistant silicon nitride ceramic material provided by the invention is prepared from the following raw materials in parts by mass: 80 to 95 parts of deoxidized silicon nitride, 3 to 15 parts of silicon carbide and 3 to 10 parts of sintering aid, the sintering aid comprises aluminum oxide, magnesium oxide and rare earth oxide. The result of the embodiment shows that the density of the ultrahigh-temperature vacuum-resistant silicon nitride ceramic material is greater than or equal to 99%, the Vickers hardness is greater than or equal to 18.5 GPa, the bending strength is greater than or equal to 800 MPa, the fracture toughness is greater than or equal to 6.5 MPa1/2, and the thermal conductivity is greater than or equal to 130 m.K.

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Номер записи: 2
06-06-2023 дата публикации

Ceramic antenna window

Номер: CN116231266A
Автор: ZHU FULIN, XU TAO, XIAO LI, JIANG JIEYING, LIU HAIYUAN
Принадлежит:

The invention discloses a ceramic antenna window, which comprises a mounting base, a ceramic antenna window and a dust filter screen, and is characterized in that when the ceramic antenna window needs to be mounted, the mounting base is fixed at the upper end of an antenna, and the top of the mounting base is provided with an inner side arc-shaped upper edge matched with the bottom arc-shaped lower edge of the ceramic antenna window, so that the two arc-shaped structures are clamped; when the ceramic antenna window needs to be disassembled, the ceramic antenna window is pressed downwards, the arc-shaped connecting edge retracts under the action of pressure, and then the ceramic antenna window can be drawn out, so that the assembling and disassembling efficiency of the ceramic antenna window is improved; a dust filter screen is further arranged at the top of the ceramic antenna window, dust accumulation on the upper surface of the ceramic antenna window can be effectively reduced through ...

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Номер записи: 3
23-06-2023 дата публикации

Nanometer composite ceramic material and preparation method and application thereof

Номер: CN116283307A
Автор: ZENG XIAOFENG, XU TAO, XIAO LI, JIANG JIEYING, LI NENG
Принадлежит:

The invention discloses a nano composite ceramic material and a preparation method thereof, and the nano composite ceramic material is prepared from the following raw materials in parts by weight: 40-60 parts of a silicon-based material, 1-20 parts of a sintering aid, 1-15 parts of a carbon-containing material, 0.1-10 parts of a rare earth material, 5-20 parts of a zirconium-containing compound and 1-10 parts of a solvent. The prepared nano-composite ceramic material has the advantages of being good in fracture toughness, high in hardness, high in bending strength and the like, the problem that silicon nitride ceramic in the prior art is insufficient in toughness is solved, the application field of the ceramic is widened, and the nano-composite ceramic material can be applied to the fields of aerospace, cutters and the like.

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Номер записи: 4
25-07-2023 дата публикации

Personalized healthy old-age care system based on 5G and intelligent building

Номер: CN116485335A
Автор: ZHOU YIXIA, TIAN WEIYI, ZHAO LUHENG, LI XIAOJIE, XU TAO, SHI GUOFENG
Принадлежит:

The invention provides a personalized health old-age care system based on 5G and a smart building, and the system comprises a smart home terminal, a smart safety protection system, a smart care service module, a smart health management module, and a smart emotion care module. The smart home terminal comprises a wearable smart device, a 5G network connection device, a health care institution display terminal, an evaluation feedback terminal and a server, and the 5G network connection device is in network connection with the wearable smart device, the health care institution display terminal and the evaluation feedback terminal through the server; the intelligent safety protection system is used for monitoring the old people in real time and performing safety early warning; the intelligent nursing service module is used for providing medicines or medical services for the old; the intelligent health management module is used for managing health archives of the old and providing remote inquiry ...

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Номер записи: 5
11-08-2023 дата публикации

News and stock association method based on business content

Номер: CN116579844A
Автор: YANG JIANG, HAN BIN, XU TAO, XU JIE
Принадлежит:

The invention discloses a business content-based news and stock association method, which belongs to the field of natural language processing and comprises the following steps of: 1, crawling annual newspapers and news of listed companies; 2, intercepting a business content part in the annual report, and then carrying out word segmentation processing on a text; 3, screening out irrelevant vocabularies by using a self-established financial inactive word bank; 4, extracting business content keywords of the listed company by using an improved word frequency-inverse file frequency algorithm (TF-IDF) to improve the representativeness of the keywords on the business content; and 5, carrying out word segmentation on the news, and then matching keywords with the news to realize the association between the stock and the news. In order to solve the problem that a current stock and news association method can only excavate a small number of stocks which are highly associated with news, the business ...

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Номер записи: 6
01-08-2023 дата публикации

Range hood fan rotating speed control device and control method thereof

Номер: CN116517865A
Автор: XU TAO, HU YUBO
Принадлежит:

The invention discloses a control device and method for the rotating speed of a draught fan of a range hood. A plurality of first magnetic pieces are evenly distributed on an impeller of the draught fan in the circumferential direction, and a plurality of second magnetic pieces are evenly distributed on a volute in the circumferential direction. The number of the first magnetic parts corresponds to the number of the second magnetic parts, and a pressure sensor is arranged below one second magnetic part. Judging whether the rotating speed of the impeller fluctuates; and if the rotating speed of the impeller fluctuates, judging that the rotating speed of the impeller is too high or too low, and adjusting the acting force according to the too high or too low rotating speed of the impeller until the rotating speed of the impeller is stable. According to the fan rotating speed control device and the control method thereof, whether the rotating speed fluctuates or not can be measured, fluctuation ...

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Номер записи: 7
11-08-2023 дата публикации

Mounting structure and mounting control method for hanging type electric appliance and hanging type electric appliance

Номер: CN116576491A
Автор: XU TAO, HE LIBO, ZHU XUBIAO, HE FENG
Принадлежит:

The invention relates to a mounting structure for a hanging type electric appliance, a mounting control method and the hanging type electric appliance, and the mounting structure for the hanging type electric appliance comprises a screw rod which is used for being fixed with an external mounting foundation; the hook is used for being connected with a hanging type electric appliance, and a hanging hole for the screw rod to penetrate through is formed in the hook; the fastening piece is arranged on the screw rod in a sleeving manner, is arranged above the hook and/or below the hook, and is used for locking the screw rod and the hook; the piezoelectric module is made of a piezoelectric material which can be deformed after being electrified, and the piezoelectric module is sleeved on the screw rod and is arranged between the fastener and the hook. The suspended ceiling type electric appliance mounting device has the advantages that the suspended ceiling type electric appliance is prevented ...

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Номер записи: 8
18-04-2023 дата публикации

Silicon nitride wave-transparent ceramic material with low thermal conductivity

Номер: CN115974559A
Автор: XU TAO, XIAO LIANG, XIAO LI, JIANG JIEYING, TAN HAOWEN
Принадлежит:

The invention provides a low-thermal-conductivity silicon nitride wave-transparent ceramic material, which is prepared by the following steps: S1, adding silicon nitride powder and a sintering aid into anhydrous propanol, stirring, and carrying out ball milling; s2, adding a polymethyl methacrylate and polyvinyl butyral ester composition into the silicon nitride matrix slurry, and continuing ball milling to obtain silicon nitride matrix slurry; s3, drying, crushing and grinding the silicon nitride matrix slurry to obtain silicon nitride matrix powder; s4, forming the silicon nitride matrix powder to obtain a silicon nitride matrix blank; s5, carrying out high-temperature glue discharging treatment on the silicon nitride matrix blank; and S6, adding padding into the silicon nitride matrix blank subjected to glue removal treatment for landfill, and performing high-temperature sintering treatment to obtain the low-thermal-conductivity silicon nitride wave-transparent ceramic material after ...

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Номер записи: 9
07-07-2023 дата публикации

Traditional Chinese medicine fumigation device for preventing stress injury

Номер: CN116392381A
Автор: ZHOU YIXIA, LI JIE, TIAN WEIYI, SHI GUOFENG, CAO FENG, XU TAO, SHUAI WEI, DENG NIAN
Принадлежит:

A traditional Chinese medicine fumigation device for preventing pressure injury comprises a fixing seat, a basin-shaped cavity with an upward opening is formed in the upper end face of the fixing seat, a first connecting hole is formed in the fixing seat, the upper end of the first connecting hole is communicated with the bottom of the basin-shaped cavity, the lower end of the first connecting hole is connected with an atomization mechanism, and an annular groove is formed in the upper surface of the fixing seat; a downward notch is formed in the left end of the fixing seat, the annular groove is communicated with the notch, an arc-shaped pipe is slidably connected into the annular groove, ports of the two ends of the arc-shaped pipe are jointly and rotationally connected with a connecting shaft pipe, a fumigation assembly is connected to the connecting shaft pipe, and the fumigation assembly can rotate by a preset angle when sliding to the notch; the lower end of the second connecting ...

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Номер записи: 10
08-08-2023 дата публикации

Carbon deposit cleaning device for fuel nozzle of aero-engine

Номер: CN116557184A
Автор: CHEN XU, WEN LIANGRONG, ZHANG YUN, WANG JUN, WANG JIANJUN, XIE PENGLING, QIU FENG, WU MENG, YAO LIANGWU, XU TAO, GOU HUAZHONG, WANG SEN, WANG YUEZONG
Принадлежит:

The invention belongs to the technical field of aero-engine repair, and particularly relates to a carbon deposition cleaning device for a fuel nozzle of an aero-engine, which is used for non-off-line carbon deposition cleaning of the fuel nozzle and comprises a guide shaft, a pull rod and a cleaning part. On the premise that main parts of the engine are not disassembled, the special portable guarantee equipment for cleaning the engine nozzle carbon deposition is developed, so that online maintenance of the engine is achieved, the time for disassembling and assembling the engine and the parts is shortened, the repair guarantee efficiency is improved, and economic benefits are improved.

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Номер записи: 11
28-07-2023 дата публикации

Production and processing equipment for silicon nitride antenna housing

Номер: CN116494393A
Автор: XU TAO, XIAO LIANG, XIAO LI, TANG NA, JIANG JIEYING
Принадлежит:

The invention relates to the field of antenna housing processing, in particular to silicon nitride antenna housing production and processing equipment. The technical problem that an existing silicon nitride radome punching device is not provided with a scrap and dust intercepting structure, a large number of ceramic scraps generated during punching are scattered all around, and surrounding air is polluted is solved. According to the technical scheme, the silicon nitride antenna housing production and processing equipment comprises a bottom plate, a mounting frame and the like; two mounting frames are fixedly connected to the upper side of the bottom plate, and the two mounting frames are symmetrically arranged left and right. The first baffle is arranged to seal the silicon nitride antenna housing, chips generated by punching are intercepted, and air is blown to the inner wall of the silicon nitride antenna housing through the first baffle, so that ceramic chips are blown into the second ...

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Номер записи: 12
01-08-2023 дата публикации

Oil cup water removal method of range hood and range hood

Номер: CN116518437A
Автор: XU TAO, HE LIBO
Принадлежит:

The invention discloses an oil cup dewatering method of a range hood and the range hood, and relates to the technical field of oil smoke purification. The oil cup dewatering method of the range hood specifically comprises the steps that firstly, the volume of a medium in an oil cup is obtained, namely, the total volume of an oil-water mixture in the oil cup is obtained, then the volume of the medium in the oil cup is compared with a first preset volume, and if the volume of the medium in the oil cup is larger than the first preset volume, the oil cup is heated; the water in the oil cup is continuously evaporated in the heating process, and the boiling point of the oil is higher than that of the water, so that only oil is left in the oil cup after the water in the oil cup is evaporated. By means of the method, under the condition that water is accumulated in the oil cup in the cooking process or the cleaning process of a user, only water can be evaporated through heating, so that resources ...

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Номер записи: 13
08-08-2023 дата публикации

Silicon nitride composite ceramic material for sealing ring and preparation method of silicon nitride composite ceramic material

Номер: CN116553937A
Автор: XU TAO, ZHU FULIN, XIAO LI, WEN JINTAO, SHAYAMA SUI
Принадлежит:

The invention provides a silicon nitride composite ceramic material for a sealing ring, which is prepared from the following raw materials in parts by weight: 60 to 80 parts of silicon nitride, 3 to 5 parts of Ti3C2, 8 to 15 parts of MXOY and 2 to 6 parts of binder. The prepared silicon nitride composite ceramic material is small in pore and high in density, and the volume density is larger than 3.2 g/cm < 2 >. The heat conductivity coefficient is high, the linear expansion coefficient is small, and cracking is avoided when the heat shock is borne. When being used as a sealing ring material, the sealing ring material has enough strength, rigidity and corrosion resistance, is small in deformation during use, and can still keep the sealing property when working conditions fluctuate; and meanwhile, the material has excellent thermal shock resistance and relatively good toughness, does not deform under high-temperature and high-pressure working conditions, and is long in service life.

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Номер записи: 14
08-08-2023 дата публикации

Dynamic balance control method, device and equipment of fan system and storage medium

Номер: CN116557351A
Автор: XU TAO
Принадлежит:

The invention discloses a dynamic balance control method, device and equipment of a draught fan system and a storage medium, the draught fan system comprises an impeller and at least two electromagnets, a pressure sensor is arranged at the bottom of any electromagnet, bases are arranged at the bottoms of the other electromagnets, and the bases and the pressure sensors are the same in height; the dynamic balance control method comprises the steps that at least one historical pressure value and at least one current pressure value of a pressure sensor corresponding to the current rotating speed of an impeller are obtained; whether the absolute value of the difference value between any historical pressure value and any current pressure value is larger than or equal to a preset pressure value or not is judged, and if yes, the input current value of at least one electromagnet is adjusted. In the operation process of the fan system, the input current of the electromagnet is adjusted according ...

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Номер записи: 15
30-06-2023 дата публикации

Ceramic wear resistance testing equipment

Номер: CN116359056A
Автор: XIAO LIANG, XU TAO, ZHU FULIN, XIAO LI, QIAN LIHONG
Принадлежит:

The invention relates to the field of material testing equipment, in particular to ceramic wear resistance testing equipment. The ceramic wear resistance testing equipment provided by the invention comprises a rotating mechanism, an electromagnetic net assembly and the like, the rotating mechanism is connected with the electromagnetic net assembly. According to the ceramic wear resistance testing equipment, the density of iron sand hitting a ceramic plate on the supporting plate is adjusted through the testing mechanism connected to the testing pipe, the strength of wear resistance testing of the ceramic plate is effectively changed, the iron sand is magnetically attracted by the electromagnetic net assembly when flowing back, and meanwhile fine ceramic plate fragments are screened off by the electromagnetic net assembly; and when the rotating mechanism carries the electromagnetic net assembly to pass through the recovery pipe, iron sand adsorbed on the electromagnetic net assembly is demagnetized ...

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Номер записи: 16
23-06-2023 дата публикации

Silicon nitride wave-transparent ceramic material with low thermal conductivity and preparation method thereof

Номер: CN116283237A
Автор: ZENG XIAOFENG, ZHU FULIN, XIAO LIANG, XIAO LI, XU TAO
Принадлежит:

The invention relates to the technical field of silicon nitride functional ceramic materials, and provides a low-thermal-conductivity silicon nitride wave-transparent ceramic material and a preparation method thereof. The preparation method comprises the following steps: mixing raw materials including silicon nitride chopped fibers, an opacifying agent, aluminum oxide, yttrium oxide, phenolic resin and a solvent, and performing ball milling to obtain a wet mixture; sequentially drying, sieving and carrying out compression molding to obtain a blank, and finally carrying out gradient sintering to obtain the low-thermal-conductivity silicon nitride wave-transparent ceramic material. The silicon nitride chopped fibers and the opacifying agent are matched for use, so that the heat conductivity of the silicon nitride wave-transparent ceramic material is reduced, and the strength of the silicon nitride wave-transparent ceramic material is improved by adding the phenolic resin; the porous silicon ...

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Номер записи: 17