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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 12. Отображено 12.
01-08-2023 дата публикации

High-speed turbine vacuum pump operation state monitoring system

Номер: CN116517857A
Автор: ZHANG YONG, NIE XIANGHUA, MO TIANYANG, FANG ZHIXIANG, GE YUZHU, DU HAIYING
Принадлежит:

The invention provides a high-speed turbine vacuum pump operation state monitoring system, which belongs to the technical field of high-speed turbine vacuum pumps, and comprises a plurality of temperature sensors, pressure sensors and vibration sensors which are preset at monitoring positions of a vacuum pump, the pressure sensor is connected with the PLC control system through a pressure transmitter, and the vibration sensor is connected with the PLC control system through a vibration transmitter. The multiple temperature sensors, the multiple pressure sensors and the multiple vibration sensors are preset at the monitoring positions of the vacuum pump, temperature, pressure and vibration are comprehensively monitored during operation of the air inlet and outlet of the vacuum pump, the gear box and the permanent magnet synchronous motor, the abnormal state during operation of the vacuum pump is effectively recognized, and fault recognition and early warning are conducted according to monitoring ...

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Номер записи: 1
07-07-2023 дата публикации

Dynamic balance monitoring system and method for centrifugal impeller rotor of turbine vacuum pump

Номер: CN116398460A
Автор: ZHANG YONG, NIE XIANGHUA, FANG ZHIXIANG, MO TIANYANG, DU HAIYING
Принадлежит:

The invention discloses a dynamic balance monitoring system and method for a centrifugal impeller rotor of a turbine vacuum pump. The method comprises the following steps that high-speed vibration signals are collected in real time in the vertical direction based on the bearing position of the centrifugal impeller rotor; performing real-time filtering processing on the high-speed vibration signal acquired in real time, and converting the high-speed vibration signal into frequency domain data, so that the frequency domain data of the high-speed vibration signal is distributed under the vibration spectrum frequency; tracking a vibration speed effective value under the rotating speed fundamental frequency of the centrifugal impeller rotor, and judging whether the surface scaling condition of the centrifugal impeller rotor reaches the cleaning standard or not according to the vibration speed effective value; if the cleaning standard is not met, the dynamic balance state of the high-speed centrifugal ...

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Номер записи: 2
21-01-2015 дата публикации

Measuring system and method of gas response sensitivity in oxygen-free environment

Номер: CN104297297A
Автор: SUN YANHUI, DU HAIYING, SONG PENG, QIAN RUI, CHEN SHIYAO
Принадлежит:

The invention relates to a measuring system and a measuring method of the gas response sensitivity in an oxygen-free environment. The measuring system comprises the oxygen-free environment, a gas chamber, a VOC (Volatile Organic Compound) gas sensor, a signal acquisition and transmission system and an upper computer, wherein the gas chamber is in the oxygen-free environment. The measuring method comprises the steps of (S1) obtaining a gas chamber in a vacuum environment; (S2) connecting the VOC gas sensor with a voltage dividing resistor in series, so as to form a voltage dividing circuit; (S3) distributing gas; (S4) measuring output voltage of the voltage dividing resistor, calculating to obtain voltage in measured gas when the VOC gas sensor is adsorbed, and selecting an appropriate voltage dividing resistor; (S5) desorbing the VOC gas sensor, measuring the output voltage of the voltage dividing resistor, and calculating to obtain voltage in air after the VOC gas sensor is desorbed; and ...

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Номер записи: 3
23-06-2023 дата публикации

Water-wheel-shaped friction nanometer-electromagnetic composite power generation device suitable for multi-frequency wave band of water flow

Номер: CN116292040A
Автор: LIU TING, LIU WENYUE, DU HAIYING, XIN YIDA, LONG FEIFEI
Принадлежит:

The invention discloses a water-wheel-shaped friction nanometer-electromagnetic composite power generation device suitable for a water flow multi-frequency wave band, belongs to the field of friction nanometer power generation, and aims to synchronously solve the problem that the power generation performance of a single-type liquid-solid friction nanometer power generator is relatively and obviously reduced due to low-frequency change of critical water flow. The first rotary power generation device comprises an electromagnetic power generation part for rotary driving; the second rotating power generation device comprises a friction nanometer power generation part used for rotating driving; and the second rotating power generation device transmits mechanical power to the first rotating power generation device through the transmission device, and the effect of improving the power generation performance is achieved.

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Номер записи: 4
30-05-2023 дата публикации

Gear-driven ultra-compact centrifugal compressor

Номер: CN116181668A
Автор: LEI XUEMEI, GE YUZHU, DU HAIYING, FANG ZHIXIANG
Принадлежит:

The gear-driven ultra-compact centrifugal compressor comprises a high-speed permanent magnet synchronous motor, a step-up gear box and a pneumatic acting assembly which are integrally designed, the high-speed permanent magnet synchronous motor comprises a driving shaft, a motor rotor assembly, a motor stator and a motor shell, and the motor rotor assembly is arranged on the driving shaft; the motor stator is arranged on the outer side of the motor rotor assembly, the motor stator and the motor rotor assembly are coaxial, the motor shell is arranged on the outer side of the high-speed permanent magnet synchronous motor, the high-speed permanent magnet synchronous motor is connected with the step-up gear box through a driving shaft, and a driving large gear of the step-up gear box is arranged on the driving shaft of the high-speed permanent magnet synchronous motor. And an impeller of the pneumatic acting assembly is arranged on a high-speed output gear shaft of the step-up gear box. The ...

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Номер записи: 5
06-06-2023 дата публикации

Method for detecting artificial sweetener by using fragrant eupatorium herb fluorescent carbon quantum dots

Номер: CN116216696A
Автор: DU HAIYING, LIU JI, YANG QING, JIANG YUQIU, PENG YAO
Принадлежит:

The invention relates to the field of food additive detection, and provides a method for detecting an artificial sweetener by using fragrant eupatorium herb fluorescent carbon quantum dots. The method comprises the following steps: a, airing fragrant eupatorium herb, putting powder into a beaker, adding distilled water, carrying out ultrasonic treatment for 10 minutes, and transferring into a high-pressure reaction kettle; b, putting the high-pressure reaction kettle into a drying oven, and reacting at a set temperature; and c, after the reaction is finished, cooling to room temperature, filtering, and collecting filtrate for later use. The prepared fluorescent carbon quantum dot has high fluorescent quantum yield, good stability and water solubility, the optimal linear detection range of aspartame is 0-750 [mu] mol/L, the detection limit of aspartame is 4.2383 [mu] mol/L, the optimal linear detection range of neotame is 0-400 [mu] mol/L, the detection limit of neotame is 6.8834 [mu] mol ...

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Номер записи: 6
25-07-2023 дата публикации

Collaborative linkage intelligent disinfectant spraying method for relatively closed public places

Номер: CN116474145A
Автор: LEE SUN-YOUNG, DU HAIYING, LI QINGYU, ZHAO LONG
Принадлежит:

The invention relates to a cooperative linkage intelligent disinfectant spraying method for relatively closed public places, belongs to the field of public place disinfection, and aims to solve the problem that the relatively closed public places are disinfected in a refined and targeted manner according to different personnel densities and different personnel use frequencies, an infrared sensing module collects thermal images of users in a scene; the single-chip microcomputer responds to the thermal imaging and outputs information to the access control module, the access control module controls the door lock to be locked to enable the relatively closed public place to form a closed space, and disinfectant is sprayed to the closed space, and the disinfection method has the advantages that in the relatively closed place, automatic detection and spraying can be achieved, and the disinfection efficiency is improved. And full detection is carried out before spraying and during spraying, so ...

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Номер записи: 7
25-11-2015 дата публикации

Medical respirator

Номер: CN0204798568U
Автор: DU HAIYING
Принадлежит:

The utility model discloses a medical respirator, including the face guard body, the middle part position department of face guard body is provided with a circular -arc division board, the division board has the recess of an arc, be provided with waterproof pad in the recess, waterproof spacer has a curved first recess, on the lateral surface of face guard body, be located the top position department of division board is provided with the wash port, the inside of face guard body, pass through the division board is separated into upper portion and is held chamber and lower part appearance chamber, the outside of face guard body be provided with with upper portion holds the communicating oxygen suppliment in chamber end and atomizing end, the outside of face guard body be provided with with the lower part holds the communicating first oxygen suppliment end in chamber and the end is supplied with to the liquid food, the device can be in the in -process cooperation atomizing of oxygen suppliment ...

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Номер записи: 8
13-07-2011 дата публикации

Double-sprayer bipolar electrostatic spinning method

Номер: CN0102121137A
Автор: JING WANG, MEIYING SU, HAIYING DU, YANGONG ZHENG, WANG JING, SU MEIYING, DU HAIYING, ZHENG YANGONG
Принадлежит:

The invention relates to a spinning method for bipolarly preparing an oxide fiber by a double-sprayer, belonging to the technical field of preparation of nano fiber materials. The invention is characterized in that an instrument comprises a high-voltage direct current power supply, two containers provided with sprayers and a collecting board. The circuit connection method comprises the following steps: applying a forward direct current voltage to one sprayer, applying a reverse direct current voltage to the other sprayer, and connecting the collecting plate connected with an earth terminal of the circuit between the two sprayers. When the circuit is switched on, the oxide fiber precursor materials sprayed by the two sprayers are interweaved together owning to the attraction of charges of different polarities, thus forming a two-oxide nano fiber interweaved network-shaped material after firing. The invention has the following effects and benefits: the material can be widely applied, such ...

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Номер записи: 9
28-07-2023 дата публикации

Dynamic balance design and operation method of transcritical flexible rotor system

Номер: CN116502357A
Автор: ZHANG YONG, MO TIANYANG, LU ZHANG, YI DIAN, DU HAIYING
Принадлежит:

The invention discloses a dynamic balance design and operation method of a transcritical flexible rotor system, which comprises the following steps of: establishing a kinetic analysis model of a high-speed centrifugal impeller rotary subsystem, and calculating vibration response caused by unbalanced excitation of the high-speed centrifugal impeller rotary subsystem; a vibration response analysis result caused by unbalanced excitation and the critical rotating speed of the rotor system are obtained, and the dynamic balance level of the high-speed centrifugal impeller rotating subsystem is determined; each rotating part of the high-speed centrifugal impeller rotating subsystem performs dynamic balance so as to determine that the dynamic balance level of each rotating part meets the design requirement; after the high-speed centrifugal impeller rotating subsystem reaches dynamic balance, circumferential position marking is conducted on all parts, then all rotating parts are repeatedly assembled ...

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Номер записи: 10
23-05-2023 дата публикации

Integrated lubricating method for ultra-compact high-speed centrifugal compressor

Номер: CN116146525A
Автор: LEI XUEMEI, GE YUZHU, DU HAIYING, YAN DONG
Принадлежит:

The invention provides an integrated lubricating method for an ultra-compact high-speed centrifugal compressor, and belongs to the technical field of centrifugal compressors, the ultra-compact high-speed centrifugal compressor comprises a high-speed permanent magnet synchronous motor, a gear speed-increasing gearbox, a pneumatic acting element and a lubricating oil filter, the high-speed permanent magnet synchronous motor is fixedly connected with the gear speed-increasing gearbox, and the pneumatic acting element is fixedly connected with the lubricating oil filter. The gear speed increasing box is fixedly connected with the pneumatic acting element, the lubricating oil filter is fixedly arranged on the high-speed permanent magnet synchronous motor, the high-speed permanent magnet synchronous motor is provided with a motor shell, a motor shell lubricating oil flow channel is arranged in the motor shell, and the high-speed permanent magnet synchronous motor is communicated with the lubricating ...

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Номер записи: 11
18-08-2023 дата публикации

High-power two-stage centrifugal compressor

Номер: CN116608139A
Автор: DU HAIYING, LU ZHANG, GONG JUNXIA, GE YUZHU, ZHANG YONG
Принадлежит:

The invention provides a high-power two-stage centrifugal compressor, and belongs to the technical field of centrifugal compressors, the high-power two-stage centrifugal compressor comprises an interstage cooler, a first-stage compression assembly, a gear speed-increasing box, a second-stage compression assembly and a motor, the motor drives the gear speed-increasing box to operate, and the first-stage compression assembly and the second-stage compression assembly are fixedly connected to the two sides of the gear speed-increasing box respectively; a high-speed shaft is arranged in the gear speed-increasing box, the two ends of the high-speed shaft extend out of the gear speed-increasing box respectively, the two ends of the high-speed shaft are fixedly connected with the first-stage compression assembly and the second-stage compression assembly respectively, and the first-stage compression assembly and the second-stage compression assembly are communicated with the two ends of the interstage ...

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Номер записи: 12