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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 10. Отображено 10.
25-04-2023 дата публикации

Asynchronous double-end traveling wave distance measurement method and device for power distribution network and storage medium

Номер: CN116008719A
Автор: LUO XUNHUA, WU JINGYANG, JIA PENGJUN, DENG ZHIMING, YANG HANHAO, GUO YIYI
Принадлежит:

The invention provides a power distribution network asynchronous double-end traveling wave distance measurement method and device and a storage medium, and the method comprises the steps: collecting line three-phase voltage signals before and after a fault through distributed power distribution terminals disposed at a feeder branch point and the head and tail ends of a feeder according to a traveling wave distance measurement request; performing transformation and detail coefficient processing on the three-phase voltage signal of the line; acquiring a coincident wave of the three-phase voltage signal of the line; performing zeroing processing on the non-coincident traveling waves distributed between the two coincident waves after regularization, and determining a time difference; further determining a power distribution terminal of a fault near end; and determining a fault distance according to the time difference of the near-end power distribution terminal, and reporting the fault distance ...

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Номер записи: 1
10-09-2014 дата публикации

Alloy blade for machining external threads of sealing screwed joint

Номер: CN104028857A
Автор: LIU QIANG, WANG JIANDONG, SONG SHENGYIN, BAI QIANG, LI DEJUN, WU GANG, JIA PENGJUN
Принадлежит:

The invention provides an alloy blade for machining external threads of a sealing screwed joint. The alloy blade comprises a body with a cutting bevel. The oblique angle of the cutting bevel ranges from nine degrees to fifteen degrees. Thread cutting teeth are arranged on the cutting bevel. Each thread cutting tooth comprises a thread guiding cutting face, a tooth bottom guiding transition circular arc, a tooth bottom cutting face, a tooth bottom bearing transition circular arc, a bearing cutting face, a tooth crest bearing transition circular arc and a tooth crest cutting face, wherein the thread guiding cutting face, the tooth bottom guiding transition circular arc, the tooth bottom cutting face, the tooth bottom bearing transition circular arc, the bearing cutting face, the tooth crest bearing transition circular arc and the tooth crest cutting face are connected with one another in sequence to form a thread cutting tooth working curved surface. The body comprises a front end face which ...

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Номер записи: 2
23-04-2014 дата публикации

Method and equipment for detecting pipe

Номер: CN103743816A
Автор: LIU YAN, YAO HUAN, SHE WEIJUN, YAN MILIN, YANG FENGPING, JIA PENGJUN
Принадлежит:

The invention discloses a method and equipment for detecting a pipe. The method comprises the following steps: picking up leaked pipes; washing pipes left after the leaked pipes are picked up by using a high-pressure water gun, wherein the left pipes are pipes to be detected; carrying out primary detection on the washed pipes to be detected; if the washed pipes to be detected, which are primarily detected, have mechanical damages, judging that the washed pipes to be detected are pipes needing to be blocked, wherein the mechanical damages at least include one of concave pits, metal thinning and cracks; carrying out secondary detection on the washed pipes to be detected, which are subjected to the primary detection and are not judged to be the pipes needing to be blocked; outputting a detection result; and comparing the detection result with a pre-set judging threshold value and judging whether the washed pipes to be detected need to be blocked or not according to a comparing result. According ...

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Номер записи: 3
23-06-2023 дата публикации

Molding method of composite material spherical segment workpiece

Номер: CN116278044A
Автор: WANG YUKAI, GUO HONGJUN, ZHANG JIAWEI, TU SHANGPING, JIA PENGJUN
Принадлежит:

The invention relates to a composite material spherical segment part forming method. The method comprises the following steps that S1, materials are prepared, specifically, material pieces are cut to obtain a plurality of round tops, a plurality of first scalloped segments and a plurality of second scalloped segments; s2, paving and pasting: S21, coating a mold release agent on a female mold, paving and pasting a dome on the mold, sequentially lapping a plurality of first scalloped segments around the circumference of the dome, butting the first scalloped segments with the dome, and at the moment, forming a first paving layer by the dome and the plurality of first scalloped segments; at least two first paving layers are continuously paved on the outermost side of the left half cover; s23, the multiple second melon petals are sequentially connected in a lap joint mode in the circumferential direction of the dome, and at the moment, the multiple second melon petals form a second laying layer ...

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Номер записи: 4
23-06-2023 дата публикации

Composite joint tool and using method thereof

Номер: CN116277629A
Автор: WANG YUKAI, GUO HONGJUN, WU BINBIN, LI QIAN, JIA PENGJUN
Принадлежит:

The composite material joint tool comprises a core mold and a supporting platform, and the core mold is fixedly placed on the supporting platform; the core mold comprises a left side core mold, a middle core mold and a right side core mold, and the left side core mold, the middle core mold and the right side core mold are spliced together to form the core mold; the widths of the ends, in contact with the supporting platform, of the left side core mold and the right side core mold are respectively smaller than the widths of the other ends of the left side core mold and the right side core mold; a first bolt hole is formed in the end, making contact with the supporting platform, of the middle core mold, unthreaded holes are formed in the ends, making contact with the supporting platform, of the left side core mold and the right side core mold respectively, and second bolt holes corresponding to the first bolt hole and the unthreaded holes respectively are formed in the supporting platform ...

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Номер записи: 5
17-09-2014 дата публикации

Solid expandable casing for thermal production well and manufacturing method thereof

Номер: CN104046906A
Автор: LI DEJUN, LIU QIANG, BAI QIANG, SONG SHENGYIN, WU GANG, LYU NENG, JIA PENGJUN
Принадлежит:

The invention relates to a heat-resistant steel, and heat-resistant steel based solid expandable casing for thermal production well and a manufacturing method thereof. The heat-resistant steel includes, by weight, 0.06-0.15% of C, 20-25% of Mn, 5-7% of Cr, 0.9-1.2% of Si, no more than 0.030% of P, 0.6-1.0% of Mo, S, N and Fe, no more than 0.030% of S and no more than 0.005% of N and the balance of Fe. The invention provides a heat-resistant steel with high uniform elongation, high plasticity and low yield strength and the manufacturing method of the expandable casing based on the heat-resistant steel.

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Номер записи: 6
16-06-2023 дата публикации

Method for judging damage degree of circumferential weld defect of pipeline

Номер: CN116263430A
Автор: LIU YAN, YANG FENGPING, XU CHUNYAN, QUE YONGBIN, ZHANG HONGBO, YAO HUAN, WU JIANCHENG, MU JINLIANG, JIA HAIDONG, TIAN YE, LI ANJUN, JIA PENGJUN, LAI JIANGANG, CHEN LEILEI, WANG GUAN
Принадлежит:

The invention discloses a method for judging the damage degree of a pipeline circumferential weld defect. Radiographic detection and TOFD detection are carried out on the pipeline circumferential weld defect; judging and classifying the pipeline circumferential weld defects subjected to radiographic detection and TOFD (Time of Flight Diffraction) detection, including surface opening defects and buried defects; judging the surface opening defect as a harmful defect; carrying out TOFD (Time of Flight Diffraction) detection on buried defects and ultrasonic checking on excessive defect parts, and judging that the buried defects are acceptable defects and unqualified defects; the unqualified defects are divided into point-shaped defects and linear defects, and then acceptable defects and harmful defects are judged. The method can reduce the number of unqualified circumferential welds, can reduce the number of decision-making repair circumferential welds, meets the requirements of comprehensive ...

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Номер записи: 7
23-06-2023 дата публикации

Nondestructive testing method and system for self-height of circumferential weld defect of pipeline

Номер: CN116305708A
Автор: ZHANG HONGBO, LIU YAN, MO RUNYANG, HUANG LEI, JIA PENGJUN, YAO HUAN, LAI JIANGANG, CHEN LEILEI
Принадлежит:

The invention discloses a pipeline circumferential weld defect self-height nondestructive testing method and system, mathematical modeling is carried out by using a statistical method, a model is trained by using a deep learning method, a defect self-height real-time prediction model is constructed, and automatic evaluation of the defect height is realized. The defect height prediction model is optimized by using sample data of known defect height and defect parameters to obtain a defect height detection model, the defect height detection model is used for detecting and comparing a test sample to obtain a compensation parameter, and the compensation parameter is used as a compensation prediction result, so that the detection precision can be accurately improved; the method is simple, high in timeliness and high in precision, and can be conveniently popularized and used in the circumferential weld hidden danger checking and quality improvement field of various large pipeline companies. According ...

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Номер записи: 8
23-06-2010 дата публикации

Anti-titanium sludge blocking processing device

Номер: CN0101745291A
Автор: JIA PENGJUN, LI HONG, LI NING, LIN JIANLIANG, LIU DONGGUANG, LIU RUIFENG, LU JUN, MA ZHONGYUAN, SHAO BAOSHUN, YANG GANG, ZHOU RONGHUI, PENGJUN JIA, HONG LI, NING LI, JIANLIANG LIN, DONGGUANG LIU, RUIFENG LIU, ZHONGYUAN MA, BAOSHUN SHAO, GANG YANG, RONGHUI ZHOU
Принадлежит:

The invention discloses an anti-titanium sludge blocking processing device and relates to an absorption device used for chemical production. The device comprises a leaching tower, a dust collector connected with the leaching tower and a spraying gun arranged at the top of the leaching tower, and an oscillator is arranged on the outer side wall of the leaching tower. Impurities hung on the side wall of the leaching tower can be oscillated off after the oscillator is additionally mounted, thereby avoiding the impurities from being hung on the side wall, reducing the frequency of clearing and reducing the labor intensity.

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Номер записи: 9
08-07-2015 дата публикации

Novel rubber control device

Номер: CN104760306A
Автор: QIU MAOSHUN, ZHANG NING, JIA PENGJUN, ZHANG DONGCHUN, LIU XIAOPING, LIU LINGTONG
Принадлежит:

The invention provides a novel rubber control device, which comprises a first group of rubber extruding rollers, a second group of rubber extruding rollers and a support device, wherein the first group of rubber extruding rollers comprise rubber extruding rollers I and rubber extruding rollers II, which are in a constant-section cylindrical form; the second group of rubber extruding rollers comprise rubber extruding rollers III in a variable-section cylindrical form and rubber extruding rollers IV in a constant-section cylindrical form or a variable-section cylindrical form; an upper bearing, a lower bearing and a spring are arranged in the support device; threaded holes are formed in the top of the support device; and adjusting bolts are arranged in the threaded holes. The rubber control device has the characteristics of simultaneously regulating and controlling different gum impregnation rates, such as edge and middle regions with different gum content requirements, and hybrid reinforcing ...

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Номер записи: 10