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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.
15-10-2003 дата публикации

Medicine for treating leukodermia and its preparing process

Номер: CN0001448160A
Автор: FENG GUOQUAN, GUOQUAN FENG
Принадлежит:

The present invention belongs to the field of medicine technology, and the medicine for treating leucoderma is prepared with saffron, Saussurea involucrata, giant typhonium tuber, sulfur, musk, and other five kinds of Chinese medicinal materials and through mixing, crushing and other steps. The medicine has simple preparation process, reasonable recipe, short treating period, low cost, no side effect and very less recurrence.

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Номер записи: 1
02-06-2023 дата публикации

Rolling bearing residual life prediction method based on deep learning and particle filtering

Номер: CN116204766A
Автор: WU YINGXIANG, LIU XIYANG, WANG LI, HUANG HAI, FENG GUOQUAN, DU SHAOHUI, CHEN GUO
Принадлежит:

The invention belongs to the field of rolling bearing reliability evaluation, and particularly relates to a rolling bearing residual life prediction method based on deep learning and particle filtering. According to the method, self-adaptive construction of the degradation index of the rolling bearing is realized, the self-adaptive construction of the degradation index is realized by constructing the efficient deep learning model, the model is constructed only based on normal data, evolution prediction is performed on an abnormal state, and the prediction accuracy is improved. The method is of great significance to rolling bearing state evaluation and residual life prediction under the condition of fault sample deficiency in actual engineering; adaptive division of the fault evolution stage of the rolling bearing is realized, the evolution stage is adaptively divided in an unsupervised clustering learning mode, and the method is more scientific and accurate compared with a traditional manual ...

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Номер записи: 2
06-01-2016 дата публикации

Shower nozzle manger plate device

Номер: CN0204937148U
Автор: YU ZONGYUAN, PAN HUIBIN, FENG GUOQUAN, YANG ZHONGYANG, XU HONGWEI
Принадлежит:

The utility model provides a shower nozzle manger plate device, includes outer sleeve, shower nozzle, rotation motor and baffle, and the shower nozzle sets up inside the outer sleeve, is provided with the nozzle that corresponds with the shower nozzle on the outer sleeve, and the baffle section is the central angle less than or equal to 180 of arc and its correspondence, and the baffle is connected with outer sleeve coaxial rotation, and the baffle sets up and seals between outer sleeve and shower nozzle and with the nozzle, and baffle one end is connected with the pivot of rotating the motor, the outer sleeve lower extreme is provided with the water receiving tank with the outer sleeve intercommunication.

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Номер записи: 3
25-08-2023 дата публикации

Engine main bearing fault high-frequency vibration diagnosis method

Номер: CN116644280A
Автор: WU YINGXIANG, WANG LI, SHENG JIAJIU, FENG GUOQUAN, HUANG HAI, LIU YAOBIN, DU SHAOHUI, CHEN GUO
Принадлежит:

The invention belongs to the field of aero-engine fault diagnosis, and particularly relates to an engine main bearing fault high-frequency vibration diagnosis method. Comprising the following steps: step 1, acquiring a rolling bearing signal, and calculating a wavelet envelope spectrum of the rolling bearing signal; step 2, calculating a ratio of a maximum fault frequency value in a tolerance range to a fault frequency average value in a preset frequency range in the wavelet envelope spectrum, and performing normalization by using an S-type function to obtain a feature saliency; and 3, determining a threshold value and a corresponding standard of the engine operation state according to the feature saliency, and judging the health condition of the engine according to the threshold value and the corresponding standard of the engine operation state. According to the method, wavelet transform, Hilbert transform and autocorrelation analysis are utilized to realize extraction of weak fault features ...

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Номер записи: 4
02-06-2023 дата публикации

Vibration suppression effect test device for squeeze film damper

Номер: CN116202718A
Автор: DONG CHAO, WU YINGXIANG, BAI XIAODONG, WANG XIAOWEI, FENG GUOQUAN, ZHAO XIAOYU, HUANG HAI
Принадлежит:

The invention belongs to the technical field of engine tests, and particularly relates to a device for testing the vibration suppression effect of an extrusion oil film damper. The device comprises a rotor shaft (7), the first end of which is supported by a first support (11) and a second support (12) and the second end of which is supported by a third support (13); the cantilever disc is fixed at the first end of the rotor shaft (7) and is used for simulating a power turbine disc; the elastic support (6) comprises an annular plate (61) and a support arm (62), the inner end of the annular plate (61) is rotationally connected with the rotor shaft (7), an oil film cavity (63) is formed between the outer end of the annular plate (61) and the first support (11), and the support arm (62) is connected with the second support (12); the first support (11) is a height-adjustable support, and a through hole penetrating through the oil film cavity (63) is formed in the first support (11). The device ...

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Номер записи: 5
06-06-2023 дата публикации

Method for designing number of rollers of intermediate bearing of aero-engine

Номер: CN116227058A
Автор: LIANG YUANYUAN, WANG JUAN, WANG LI, CONG PEIHONG, FENG GUOQUAN
Принадлежит:

The invention belongs to the field of aero-engines, and particularly relates to a method for designing the number of rollers of an intermediate bearing of an aero-engine. Comprising the following steps: step 1, acquiring statistical data of passing frequency and vibration amplitude of each stage of fan blade of complete machine test run, and determining target passing frequency of the fan blade and rotating speed of a high-low pressure rotor of typical test run; 2, determining the number of intermediate bearing rollers, and calculating a change curve of the characteristic frequency of the engine intermediate bearing along with the rotating speed; 3, judging whether the relation between the target passing frequency of the fan blade and the characteristic frequency of the intermediate bearing meets the requirement or not, if yes, obtaining the number of rollers of the intermediate bearing meeting the requirement, and if not, returning to the step 2 to re-determine the number of the rollers ...

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Номер записи: 6
25-08-2023 дата публикации

Aero-engine rolling bearing fault diagnosis method based on residual network

Номер: CN116644672A
Автор: WU YINGXIANG, WANG LI, KANG YUXIANG, HUANG HAI, FENG GUOQUAN, DU SHAOHUI, CHEN GUO
Принадлежит:

The invention belongs to the field of aero-engine fault diagnosis, and particularly relates to an aero-engine rolling bearing fault diagnosis method based on a residual network. Comprising the following steps: S1, obtaining an aero-engine bearing fault test model, carrying out an aero-engine bearing fault test, and collecting a vibration acceleration signal; s2, constructing a residual network model; s3, marking the vibration acceleration signals according to different fault types; s4, performing Fourier transform on the marked vibration acceleration signal to obtain a spectrogram, and taking the spectrogram as the input of the residual network model; s5, dividing an original vibration acceleration signal into a training set and a test set, and training the residual network model; and S6, fault diagnosis of the engine rolling bearing is realized through the trained residual network model. The method does not need to depend on manual feature calculation, and has the characteristics of higher ...

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Номер записи: 7
30-05-2023 дата публикации

Complete machine vibration response comprehensive simulation analysis method for peeling fault of coupling bearing

Номер: CN116187126A
Автор: WU YINGXIANG, CAO CAN, WANG LI, FENG GUOQUAN, DING XIAOFEI, HUANG HAI, LIN JINBO, DU SHAOHUI, CHEN GUO
Принадлежит:

The invention belongs to the field of aviation turbofan engine complete machine dynamics analysis design, and particularly relates to a coupling bearing peeling fault complete machine vibration response comprehensive simulation analysis method. Comprising the following steps: calculating a Hertz contact force under a main bearing peeling fault condition; obtaining a complete machine coupling dynamics one-dimensional beam model, importing the Hertz contact force as an excitation condition into the complete machine coupling dynamics one-dimensional beam model to obtain an engine complete machine vibration model containing a main bearing peeling fault, and calculating through a numerical integration method to obtain a complete machine vibration response under first main bearing fault excitation; outputting a bearing force dynamic load time history generated at the main bearing due to the fault of the main bearing; and a whole machine entity finite element model without the rotor entity finite ...

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Номер записи: 8
30-05-2023 дата публикации

Aero-engine restarting cold operation sensitive time period determination method

Номер: CN116181496A
Автор: WANG JUAN, LIANG YUANYUAN, WANG LI, FENG GUOQUAN, CONG PEIHONG
Принадлежит:

The invention belongs to the technical field of aero-engine restarting cold operation sensitive time period determination, and particularly relates to an aero-engine restarting cold operation sensitive time period determination method. In the aero-engine restarting process, the sensitive time period is obtained according to the time interval range corresponding to the limit exceeding of the maximum vibration peak value and the previous operation, the sensitive time period can be accurately determined, the possibility that part of the sensitive time period is missed or a non-sensitive time range is contained can be greatly reduced, the starting vibration reduction effect is given, and the starting efficiency is improved. When the aero-engine is restarted in a sensitive time period, the vibration reduction effect of cold operation is used for guiding practice.

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Номер записи: 9
06-06-2023 дата публикации

Underground cable partial discharge fault detection method and device based on actual characteristics of cable

Номер: CN116223989A
Автор: CHEN XIA, CHEN XINGYAO, DENG JUNCHAO, FENG JINTIAN, LI JIANWEN, FENG GUOQUAN, LI WEIJIE, ZHONG YUCHENG, SU YU, SHEN JIXIANG, XU CHUNCHUAN
Принадлежит:

The invention relates to the technical field of discharge detection, and discloses an underground cable partial discharge fault detection method and device based on actual characteristics of a cable. According to the invention, high-frequency characteristic data of the underground cable to be measured are obtained through measurement; constructing a to-be-tested underground cable structure model; calculating the total high-frequency attenuation loss of the cable by using the high-frequency characteristic data according to the model, and calculating a high-frequency attenuation constant according to the calculated value of the total high-frequency attenuation loss; and performing partial discharge analysis on the cable sample with the actual partial discharge position according to the obtained high-frequency attenuation constant calculation value, and adjusting the model based on a comparison result of the obtained partial discharge analysis position and the actual partial discharge position ...

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Номер записи: 10
06-01-2016 дата публикации

Coal haulage of container formula railway presses down dirt sprinkler

Номер: CN0204937147U
Автор: YU ZONGYUAN, PAN HUIBIN, FENG GUOQUAN, YANG ZHONGYANG, XU HONGWEI
Принадлежит:

The utility model provides a coal haulage of container formula railway presses down dirt sprinkler, includes the box and sets up vertical lift mechanism in the box, level straight line advancing mechanism and sprinkler, and vertical lift mechanism sets up in box one end, and level straight line advancing mechanism sets up in the vertical lift mechanism upper end, and sprinkler passes through level straight line advancing mechanism and vertical lift mechanism sliding connection. Still be provided with liquid storage pot and power generating equipment in the box, the liquid storage pot passes through the raceway to be connected with sprinkler, is provided with the tubing pump on the raceway.

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Номер записи: 11
26-05-2023 дата публикации

Dynamic design method for gas turbine rotor capable of simultaneously outputting power before and after

Номер: CN116167215A
Автор: DONG CHAO, ZHENG NAN, SHAO ZENGDE, WANG XIAOWEI, FENG GUOQUAN, ZHAO XIAOYU, HUANG HAI
Принадлежит:

The invention belongs to the technical field of engine design, and particularly relates to a dynamic design method for a gas turbine rotor capable of outputting power front and back simultaneously. The method comprises the following steps: S1, converting the working rotating speed of the double-rotor system into an input parameter of dynamic design; s2, determining an external transmission shaft system based on a connection mode of two rotor systems of the double-rotor system, and giving a value range of influence parameters of dynamic design; s3, establishing a simulation analysis model; s4, determining the critical rotating speed, the rotor strain energy, the external transmission shaft system strain energy and the external transmission shaft system supporting point strain energy of the dual-rotor system based on the simulation analysis model; and S5, performing optimization design on the simulation analysis model in the step S3 based on each parameter threshold. Shaft system structures ...

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Номер записи: 12
31-12-2014 дата публикации

Branching device

Номер: CN104253431A
Автор: WU TAO, WANG WANG, HU BAOYU, JI CHANGXIN, WANG YANHUI, HUANG MINGYI, FENG GUOQUAN
Принадлежит:

The invention provides a branching device which comprises a movable mechanism. The movable mechanism comprises a live-wire input end and a live-wire output end; the live-wire input end is electrically connected with one main live wire of a trunk overhead line; the live-wire output end is electrically connected with multiple branched live wires of a branched overhead line when in a first state, and is disconnected with one or multiple of the branched live wires when in a second state; and the live-wire input end is electrically connected to the live-wire output end. The branching device solves the technical problem of long-time power interruption to the trunk line during troubleshooting of the branched lines and has the technical effect of shortening power interruption time of the trunk line.

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Номер записи: 13
08-08-2023 дата публикации

Manufacturing method of filament non-woven fabric

Номер: CN116555984A
Автор: FENG GUOQUAN, HUANG GUOHONG, SHEN LIYONG
Принадлежит:

The invention relates to the technical field of filament non-woven fabric manufacturing, and discloses a filament non-woven fabric manufacturing method which comprises the steps that S1, a filament fiber spinning cake is placed on a creel, and filament fibers are unwound from the spinning cake; s2, the unwound filament fibers are led into a godet through a yarn guide; s3, the filament fibers are introduced into an airflow nozzle through a godet, and an airflow inlet used for introducing compressed air into the airflow nozzle is formed in the airflow nozzle; s4, the filament fibers are guided into a cloth net device through an airflow nozzle and compressed air introduced through an airflow inlet, the filament fibers are distributed to a moving conveying net curtain through the cloth net device, and a filament fiber net is laid on the conveying net curtain; s5, the filament fiber net is pressed through a pressing roller and then solidified and formed through a drying oven and a hot roller ...

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Номер записи: 14
23-05-2023 дата публикации

Complete machine kinetic model reduction method for aero-engine

Номер: CN116150881A
Автор: DING XIAOFEI, SHAO ZENGDE, LIN JINBO, LIANG YUANYUAN, FENG GUOQUAN, HUANG HAI, WANG JUAN
Принадлежит:

The invention belongs to the field of aero-turbofan engine complete machine dynamics analysis design, and particularly relates to an aero-engine complete machine dynamics model reduction method. Comprising the steps of defining a truncation main mode number of a reduction structure; selecting a main degree of freedom needing to be reserved in the whole machine stator entity model; reducing the whole machine stator entity model to form a super-unit model; under the same boundary condition, respectively calculating modal frequencies of the whole machine stator entity model and the super-unit model; judging whether the modal frequency error of the whole machine stator entity model and the super-unit model is smaller than a threshold value or not, if yes, entering the next step, and if not, returning to redefine the truncation main modal number of the reduction structure; all three-dimensional solid stator units in the complete machine dynamic model are deleted, only the complete machine rotor ...

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Номер записи: 15
23-06-2023 дата публикации

Squirrel cage elastic supporting structure adopting pre-adjusting concentric design

Номер: CN116296173A
Автор: DONG CHAO, ZHANG AO, ZHENG NAN, SHAO ZENGDE, FENG GUOQUAN, WANG XIAOWEI, CAO CAN
Принадлежит:

The invention belongs to the technical field of engine tests, and particularly relates to a squirrel cage elastic supporting structure adopting a pre-adjusting concentric design. The device comprises an annular main body (1), the inner wall of the annular main body (1) is rotationally connected with a power turbine rotor (100), and the outer wall of the annular main body (1) is connected to the interior of a cylinder of an elastic support mounting seat (200) in a sleeving mode through an elastic support limiting gap; a plurality of support arms (2) are uniformly arranged in the circumferential direction of the annular main body (1), and the tail end of each support arm (2) is fixedly connected to a spigot at the front end of a cylinder body of the elastic support mounting seat (200) through a mounting edge (21); the annular body (1) is of an eccentric structure with the thickness of the lower end of the body larger than the thickness of the upper end of the body, and the eccentricity is ...

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Номер записи: 16
11-04-2023 дата публикации

Aero-engine elastic ring strength design method considering assembly tightness

Номер: CN115952599A
Автор: DING XIAOFEI, SHAO ZENGDE, LIN JINBO, LIANG YUANYUAN, FENG GUOQUAN, HUANG HAI, WANG JUAN
Принадлежит:

The invention belongs to the field of aero-engine strength design, and particularly relates to an aero-engine elastic ring strength design method considering assembly tightness. According to the aero-engine elastic ring strength design method considering the assembly tightness, the strength of the aero-engine elastic ring can be designed, the iteration period of the elastic ring design can be greatly shortened, and the design efficiency is improved; the influence of the rigidity and the assembly tightness of the elastic ring is comprehensively considered, the engineering design requirement can be met, and the engineering assemblability can also be met; the strength reserve design is considered, and the long-service-life working requirement of the elastic ring in engineering can be met.

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Номер записи: 17