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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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Форма поиска

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 12. Отображено 12.
28-07-2023 дата публикации

Insulation device and method for real-time monitoring of rub-impact state of labyrinth sealing structure

Номер: CN116504473A
Автор: DENG XIANGDONG, WANG HAITAO, FENG DAQIANG, HOU JUNLIN, ZHOU JIALIN, XU CHENGHUI
Принадлежит:

The invention provides an insulation device and method for monitoring the rub-impact state of a labyrinth sealing structure in real time, and belongs to the technical field of aero-engine jet pipe tests. The insulation device is used for insulating two ends of a comb tooth when the rub-impact state of the comb tooth sealing structure is monitored in real time through a circuit. The insulation device comprises a high-pressure air supply insulation assembly arranged at the airflow outlet end of an outer sleeve at the front end of the comb tooth and a force measuring rack movable frame insulation assembly arranged at the airflow inlet end of an inner sleeve at the rear end of the comb tooth. The insulation device is compact in overall structure arrangement, convex flanges arranged at the front end and the rear end of the labyrinth structure are sealed through asbestos pads, the air tightness of a high-pressure air supply pipeline system can be guaranteed, meanwhile, a polytetrafluoroethylene ...

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Номер записи: 1
29-08-2023 дата публикации

Control method for calculating fixed weight of steel billet based on non-fixed length of bar

Номер: CN116651928A
Автор: ZOU SHUFENG, WANG HUI, ZHANG SONG, SHEN QIANG, JIANG FUXIAO, CAI QINGSHUI, XU CHENGHUI
Принадлежит:

The invention relates to the technical field of continuous casting and steel rolling production shearing control, and particularly discloses a control method for calculating the fixed weight of a steel billet based on non-fixed length of a bar, which comprises the following steps: 1) steel billet tracking in hot charging and direct rolling processes: (1) virtual position triggering, (2) flow number transmission, and (3) after the steel billet enters a rolling line, the technology is consistent with a cold billet signal tracking technology; 2) a calculation method based on the non-fixed length of the bar; (3) the rolling line double-length shear control system uploads the remaining length and the steel billet flow number after the last double-length is cut and fixed to the industrial internet platform through the PLC control system, and the industrial internet platform issues the steel billet adjusting length; 4) performing data conversion between the continuous casting primary control system ...

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Номер записи: 2
05-05-2023 дата публикации

Bar cooling bed output roller way control method

Номер: CN116060460A
Автор: LEE SUNG HWA, CAI QINGSHUI, XU CHENGHUI, DU XICHANG
Принадлежит:

The invention belongs to the technical field of bar cooling bed output control, and particularly relates to a bar cooling bed output roller way control method, two cold metal detectors are installed on the basis of an original cold metal detector, multiple-length rolled pieces on an output roller way are detected at the same time, and only when the three cold metal detectors do not have detection signals, the three cold metal detectors can detect the multiple-length rolled pieces on the output roller way. The PLC control system controls the steel moving trolley to act only when the double length of the correlation grating is not detected before cold shearing; the PLC control system controls starting and stopping of a frequency converter controlled by a roller way motor in a segmented mode. The cold shear shears the first shear as a shear head, the cold shear shears the third shear, the cold bed output roller way first-section cold detection detects a steel-free signal, and the cold bed ...

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Номер записи: 3
23-06-2023 дата публикации

Air pipeline system control method based on LSTM prediction model

Номер: CN116306221A
Автор: CHENG YUEHUA, WU YANG, ZHOU JIALIN, SHAN SHENGQIANG, XU CHENGHUI, ZHANG YANHUA, ZENG JIANYONG, HOU JUNLIN
Принадлежит:

The invention discloses an air pipeline system control method based on an LSTM prediction model, and belongs to the technical field of control and adjustment. According to the method, a neural network model for predicting the pressure and the flow when the system is stable through the current system state parameters and the adjusted opening degree of the pipeline valve is constructed. Historical data of system operation are preprocessed to obtain a data set, and a model with the best performance is selected through multiple times of training. When a strategy is formulated, a valve to be regulated is specified, the regulating range of the valve is limited, the regulating direction of the valve is set according to the relationship among the target pressure, the flow and the current value, the regulating ranges of all the valves are traversed at a certain step length to obtain valve opening combinations, and the air pressure and the flow when the system is stable under each valve opening combination ...

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Номер записи: 4
18-06-2014 дата публикации

Xylogranatumin G and preparation method and application thereof

Номер: CN103864876A
Автор: GUO YUEWEI, DING JIAN, ZHOU ZHENFANG, LIU HAILI, XU CHENGHUI
Принадлежит:

The invention relates to a new triterpenoid xylogranatumin G obtained by separating from xylocarpus granatum koenig, a preparation method and an application thereof in preparation of medicines for treating tumor. The xylogranatumin G has the following structural formula as shown in the description. Multi-time in-vitro antitumor activity experiments show that the compound has obvious activity of inhibiting tumor cells and is expected to be applied in the preparation of the medicines for treating tumor.

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Номер записи: 5
11-03-2015 дата публикации

Preparation method of high-purity nateglinide

Номер: CN104402756A
Автор: YU YAOWEN, XU CHENGHUI, ZHANG WEIMIN, LYU HEPING, WANG YUAN, XING BINGMEI, LYU LANTING, LI YUNXIA, MA ZHANBO, LI CUIPING, ZHU LIXIN, NIAN BEILEI, WANG JIU
Принадлежит:

A preparation method of high-purity nateglinide comprises the following steps: trans-4-isopropyl-cyclohexanecarboxylic acid is taken as a starting material, acyl chloride obtained by chlorinating sulfoxide chloride reacts with D-phenylalanine, the reaction product is subjected to acid hydrolysis to obtain B-type nateglinide, and then the B-type nateglinide is transformed in ethyl alcohol to obtain H-type nateglinide. The method is simple to operate, the raw materials are easy to obtain, the yield is higher and the product quality is high.

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Номер записи: 6
05-03-2014 дата публикации

Assembling device and assembling method for gearbox double-shaft assembly of tractor

Номер: CN103615518A
Автор: WANG ZHIJUN, DUAN HUARONG, WANG LINJUN, WANG JIANMING, XU CHENGHUI, ZHANG KEQING, GE PIANJING, JIN HONGHUI, YI LIANGJUN, WANG MINGHAI
Принадлежит:

The invention belongs to the field of mechanical manufacture and relates to an assembling device and an assembling method for gearbox double-shaft assemblies of a tractor. The assembling device comprises a body component (9), two sets of guide components (10), a locating component (11), a hoisting hook component (12) and a pre-installing component (13). The locating component (11), the guide components (10) and the hoisting hook component (12) are fixedly connected to the body component (9) to form a fixedly connected 'integral assembly'. According to the assembling device and the assembling method for gearbox double-shaft assemblies of the tractor, when the double-shaft assemblies conduct assembly in a casing of a power shifting gearbox in an arranging mode, mesh gears between the double-shaft assemblies are in the normal mesh state, collision mechanical damage produced on the mesh faces of the gears is avoided, and it is further ensured that the double-shaft assemblies are accurately ...

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Номер записи: 7
12-05-2023 дата публикации

Temperature control and rolling control method for high-speed bar production line

Номер: CN116099882A
Автор: ZOU SHUFENG, JIANG FUXIAO, XU CHENGHUI, ZHANG SONG, SHEN QIANG, CAI QINGSHUI
Принадлежит:

The invention belongs to the technical field of steel production, and particularly relates to a high-speed bar production line temperature control and rolling control method which is based on the design of double-high-bar 4 + 2 modular rolling mills, three water tanks are arranged between four racks and two racks, a rolled piece can be tempered and heated through the scattered modular rolling mills, an intelligent water cooling temperature control system is developed independently, and the production efficiency is improved. Temperature control rolling and graded controlled cooling processes are provided, low Si and Mn alloy production of the hot-rolled steel bars is achieved, and high-precision water cooling temperature control and accurate head and tail non-cold section control are achieved; the temperature control rolling and graded controlled cooling process is provided for the first time, high-precision water cooling temperature control and accurate head and tail non-cold section control ...

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Номер записи: 8
11-07-2023 дата публикации

High-speed bar rotating hub transmission control method

Номер: CN116408356A
Автор: ZOU SHUFENG, JIANG FUXIAO, XU CHENGHUI, SHEN QIANG, CAI QINGSHUI, ZHANG SONG
Принадлежит:

The invention belongs to the technical field of metallurgy, and relates to a high-speed bar rotating hub transmission control method, which adopts large-proportion small-integral high-dynamic characteristic control in the starting process of a rotating hub motor and small-proportion large-integral steady-state control in the braking process through a speed regulator according to a PLC control signal. When the rolling speed is high, additional torque is added on a main torque channel, real-time dynamic adjustment is carried out, and the starting time is shortened. Dynamic setting of rotating hub control process parameters is put forward for the first time, and responding rotating hub motor control parameters are set according to PLC signals in different stages; a rotating hub control model is put forward for the first time, additional torque is added on a main torque channel, rotating hub starting torque is improved, current is restrained, and the rotating hub motor response speed is improved ...

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Номер записи: 9
27-06-2023 дата публикации

Rolling line starting and stopping control method

Номер: CN116329274A
Автор: CAI QINGSHUI, ZOU SHUFENG, BO FUQUAN, XU CHENGHUI, WEI ZHENZHONG
Принадлежит:

The invention belongs to the technical field of automatic control of rolling mills in the metallurgical industry, and relates to a rolling line start-stop control method which comprises the following steps: during short-time shutdown, a rolling line PLC (Programmable Logic Controller) control system controls output, a rectification controller stops triggering work, the current of a double-secondary-side loop is zero, but a rectification module cooling fan still runs; during long-time shutdown, the universal circuit breaker is configured to be connected with a secondary loop, shunt excitation and closed lines of the universal circuit breaker are connected out, output is controlled through the rolling line PLC control system, the universal circuit breaker is controlled to be automatically switched on and switched off, and therefore operation of the rectification module is stopped; after the heating furnace is heated to a set temperature and sends out a tapping preparation signal, the universal ...

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Номер записи: 10
18-08-2023 дата публикации

Series resonance test calculation auxiliary system

Номер: CN116609620A
Автор: LU YANG, XU CHENGHUI
Принадлежит:

The invention discloses a series resonance test calculation auxiliary system which is connected with a series resonance test simulation system, and the series resonance test simulation system is used for simulating a series resonance test. The calculation auxiliary system is used for determining the model of test equipment, the number of reactors and the connection mode and comprises a data acquisition unit, a data calculation unit and an output unit which are connected in sequence. Excel with great advantages in circulation, safety and use cost is selected as an auxiliary tool platform, cable voltage is adopted as a column number, cable cross section area is adopted as a row number for indexing, INDEX and MATCH functions are used in a composite mode, the capacitance per unit length of the cable is obtained on the basis of a cable model capacitance value data table, and the cable model capacitance value data table is calculated. And result calculation is carried out in combination with ...

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Номер записи: 11
07-07-2023 дата публикации

Ankle joint multi-angle movement auxiliary rehabilitation device

Номер: CN116392359A
Автор: XU CHENGHUI, ZHAO GUANGCHUN, LU PINPIN, LI LI, DAI YAPING, ZHANG YINGZI
Принадлежит:

The invention discloses an ankle joint multi-angle movement auxiliary rehabilitation device which comprises a supporting base. The rotating mechanism comprises a connecting part, a mounting part and a rotating part, and the connecting part and the mounting part are both arranged on the supporting base; through starting of a rotating motor and cooperation of a rotating mechanism, a supporting rod drives a supporting plate to rotate back and forth, left-right rotating rehabilitation training is conducted on the ankle joint of a patient, a supporting mechanism is fixed to a threaded cylinder, and through cooperation of an adjusting mechanism and the supporting mechanism, the patient can press the supporting plate downwards with the front sole, and the adjusting motor can rotate forwards and backwards alternately; according to the technical scheme, a patient is assisted in exercising ankle joints, various rehabilitation exercises can be carried out according to the actual conditions of the ...

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Номер записи: 12