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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.
05-05-2023 дата публикации

Vacuum pump assembly capable of improving process object containing capacity and dry vacuum pump

Номер: CN116066365A
Автор: WEI MIN, LEI XIAOHONG, LEI XIAOBO, PENG CHONG
Принадлежит:

The invention relates to a vacuum pump assembly capable of improving process object containing capacity and a dry vacuum pump. The vacuum pump assembly comprises a front bearing plate, an upper shell, a lower shell, a long rotor, a short rotor and a rear bearing plate. The long rotor and the short rotor respectively rotate around respective rotating shafts in opposite directions, and the axes of the rotating shafts of the long rotor and the short rotor are parallel to each other; each of the long rotor and the short rotor comprises multiple stages of rotors, and the multiple stages of rotors are arranged at intervals in the axis direction of rotating shafts of the long rotor and the short rotor; the long rotor and the short rotor are correspondingly meshed with each other, and dust storage grooves are formed in the non-key faces where the rotors are meshed with each other. According to the invention, the accommodating capacity of a process object is improved, and the phenomena of pump blocking ...

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Номер записи: 1
23-06-2023 дата публикации

Roots vacuum pump rotor with wavy bionic structure and roots vacuum pump

Номер: CN116292281A
Автор: LEI XIAOHONG, CHEN FENG, WANG WEICHAO, PENG CHONG, QIAO HUI
Принадлежит:

The invention relates to a Roots vacuum pump rotor with a wavy bionic structure and a Roots vacuum pump. The Roots vacuum pump comprises a left rotor and a right rotor, the sections, perpendicular to the rotating axis, of the left rotor and the right rotor are in the shape of an 8-shaped leaf, and leaf top wave-shaped bionic structures are arranged at the two opposite top points of the 8-shaped leaf. When one rotor is vertically arranged, the other rotor is horizontally arranged, and when the rotors rotate, the wave-shaped bionic structure at one end can reduce impact and backflow of airflow to the interior of the pump shell all the time, and vibration and leakage amount of the pump are reduced. Periodic impact of fluid in the blade top area on the pump shell is reduced, airflow excitation in gaps between the rotors and gaps between the rotors and the inner wall face of the vacuum pump shell can be obviously improved, the good effect of restraining leakage flow between the rotors and gaps ...

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Номер записи: 2
09-06-2023 дата публикации

Multi-stage roots vacuum pump and working method thereof

Номер: CN116241461A
Автор: LEI XIAOBO, LEI XIAOHONG, ZHANG JIANHUA, FU QIANG, WEI QIANG
Принадлежит:

The invention relates to a multistage roots vacuum pump and a working method thereof. The multistage roots vacuum pump comprises a pump shell, a first rotor and a second rotor. The pump shell comprises an upper shell body and a lower shell body, and airflow channels are formed in the upper shell body and the lower shell body. The first rotor and the second rotor respectively rotate around respective rotating shafts in opposite directions, and the axes of the rotating shafts of the first rotor and the second rotor are parallel to each other; the first rotor and the second rotor respectively comprise multiple stages of rotors, and the multiple stages of rotors are arranged at intervals in the axis direction of the rotating shaft; the sections, perpendicular to the rotation axis, of the multi-stage rotors of the first rotor and the second rotor are in an 8-shaped profile and/or a four-leaf profile and/or a five-leaf profile.

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Номер записи: 3
25-07-2023 дата публикации

Method for machining small-angle-like features of inner cavity through angle head

Номер: CN116475470A
Автор: LEI XIAOHONG, WEI MIN, LEI XIAOBO, ZHANG KAI
Принадлежит:

The invention discloses a method for machining small-angle characteristics of an inner cavity through an angle head. The method comprises the following steps that S1, the 0-point position of a machine tool is set when a swing shaft of the machine tool is 0 degree; s2, the machine tool pendulum shaft drives the part to rotate by a degree, so that after the machine tool pendulum shaft drives the part to rotate by a degree, the cooling air hole to be machined is parallel to the tool nose of the angle head; s3, calculating a zero point position change value of the bed; s4, according to a calculation result, original five-axis machining is converted into three-axis machining; and S5, machining of the small-angle features of the inner cavity is completed through three-axis side milling machining. The angle head and the cutter can directly enter the part to machine the inclined hole, the operation method is simplified, the requirement of machining for special post-processing of software is lowered ...

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Номер записи: 4
30-05-2023 дата публикации

Energy level regulation and control PbS quantum dot photoelectric detector and preparation method thereof

Номер: CN116190485A
Автор: YU LIJING, TANG LIBIN, TIAN PIN, HAO QUN, ZHONG HEFU, ZUO WENBIN, LEI XIAOHONG, DENG GONGRONG, WANG JINGYU, HUANG JUNBO, FENG JIANGMIN, YUAN JUN, GONG XIAOXIA, SHI JINGMEI
Принадлежит:

The invention discloses an energy level regulation and control PbS quantum dot photoelectric detector and a preparation method thereof, and belongs to the technical field of photoelectricity. The detector comprises a substrate; the ITO transparent electrode layer is formed on the substrate; the AZO functional layer is formed on the ITO transparent electrode layer; the PbS colloidal quantum dots are formed on the AZO functional layer; the bismuth telluride (Bi2Te3) charge transport layer is formed on the PbS colloidal quantum dots; and the Al electrode is formed on the Bi2Te3 charge transport layer. According to the preparation method of the detector, the AZO functional layer is realized through a magnetic control method, the PbS quantum dot film is realized through multiple times of spin coating and ligand exchange, bismuth telluride (Bi2Te3) grows through a magnetron sputtering method, and the Al electrode layer is realized through a vacuum evaporation method. According to the detector ...

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Номер записи: 5
24-06-2015 дата публикации

Novel structure of solar cell sintering furnace belt

Номер: CN204421601U
Автор: LEI XIAOHONG, LI GUOLIANG
Принадлежит: BEIJING GRANDHITEK CO LTD, BEIJING GRANDHITEK CO., LTD.

The utility model provides a novel structure of a solar cell sintering furnace belt. The novel structure comprises a conveying mesh belt and a plurality of supporting frame sets arranged on the conveying mesh belt at equal intervals. Each supporting frame set is formed by two corresponding supporting frames, the conveying mesh belt comprises a plurality of transverse bars and an outer frame, wherein the transverse bars are equal in length and are evenly arranged in the outer frame in parallel, and the two ends of the transverse bars are connected with the corresponding inner sides of the outer frame respectively. The supporting frames are in a right splay shape, the bottoms of the supporting frames are connected with the transverse bars, and the two supporting frames symmetrically arranged in each supporting frame set are arranged on the two sides of the center of the same transverse bar. According to the novel structure, the shielding to the back faces of cells by the conveying mesh belt ...

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Номер записи: 6
07-04-2023 дата публикации

Stator pressure maintaining tool and use and production method thereof

Номер: CN115931247A
Автор: MENG YONGJIAN, WEI MIN, LEI XIAOHONG, DING YINMING, WANG XIN, LIU JIANWEI
Принадлежит:

The invention relates to a stator pressure maintaining tool and an installation, use and production method thereof. The stator pressure maintaining tool comprises a plug, at least two stator sealing rings, at least one stator and a rear end cover. According to the stator pressure maintaining tool, the stability of the tool can be improved, compatibility of various stators can be achieved, pressure maintaining testing of complex stators with external protrusions and the like can be achieved, and meanwhile pressing leakage detection of the stators can be achieved, and vacuumizing leakage detection of the stators can also be achieved.

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Номер записи: 7
22-08-2012 дата публикации

Load power takeoff (PTO) device for high-lift portal crane

Номер: CN0102070088B
Автор: CHUANMIN WANG, AN JIE JIAN, YISONG SUI, DAMING GAO, MEIJING ZHOU, YAQIN XIE, XIAOHONG LEI, WANG CHUANMIN, JIE JIAN'AN, SUI YISONG, GAO DAMING, ZHOU MEIJING, XIE YAQIN, LEI XIAOHONG
Принадлежит:

The invention provides a load power takeoff (PTO) device for a high-lift portal crane. The PTO device comprises a tension sensor and a stress release device for fixing a hoisting rope. The stress release device comprises a crossbeam, a thrust ball bearing, a rotating joint and a standard wire rope sling, wherein, the standard wire rope sling is fixedly connected below the rotating joint, the thrust ball bearing is arranged between the rotating joint and the crossbeam, the rotating joint is fixedly connected with the crossbeam in a free rotation manner, and two ends of the crossbeam are connected with the tension sensor through a pulling plate; and output of the tension sensor is connected to a main machine of a moment limiter in a cab of the crane. The load PTO device has the advantages that load measurement accuracy is improved and wear of the wire rope is reduced in the case of load hoistingzmeasurement; and a wire rope fixing device is equipped with the thrust ball bearing which can ...

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Номер записи: 8
11-08-2023 дата публикации

Rotor and vacuum pump

Номер: CN116576107A
Автор: WEI MIN, LEI XIAOHONG, LIU JIANWEI, WANG XIN, DING YINMING
Принадлежит:

The present application provides a rotor and a vacuum pump, the rotor comprising: a body having an outer peripheral surface; the blades and the body are integrally arranged, and the blades extend from the peripheral surface in the direction away from the body; wherein the outer peripheral surface is provided with a lightening hole, and the axis of the lightening hole is perpendicular to the outer peripheral surface. The lightening holes are formed in the outer peripheral surface of the body, so that the self weight of the rotor can be reduced, the load of a bearing and a motor in the vacuum pump using the rotor is reduced, and the service life of the vacuum pump is prolonged, and meanwhile, due to the reduction of the self weight of the rotor, the axis of the lightening holes is perpendicular to the outer peripheral surface; the influence of the lightening holes on the compression function of the vacuum pump can be reduced.

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Номер записи: 9
06-06-2023 дата публикации

Roots pump rotor with pneumatic sealing grooves and roots pump

Номер: CN116221110A
Автор: LEI XIAOHONG, PENG CHONG, WEI MIN, ZHANG JIANHUA, FENG WEI, ZHANG KAI
Принадлежит:

The invention relates to a roots pump rotor with pneumatic sealing grooves and a roots pump. Rotors of the Roots vacuum pump work in pairs, the sections, perpendicular to the rotation axis, of the Roots vacuum pump and the Roots vacuum pump are in the shape of an 8-shaped leaf, and annular pneumatic sealing grooves are formed in the two side faces of the 8-shaped leaf. The pneumatic sealing groove formed in the side face can reduce the leakage amount of a gap between the side face and the wall face of the pump body. According to the pneumatic sealing principle, the pressure difference between the two sides of the sealing device is reduced, and backflow loss and air leakage loss in gaps between the side faces of the two sides of the rotor and the wall face of the pump body can be obviously reduced on the premise that the thickness size of the rotor is not changed by combining a vortex structure formed in the groove when the rotor rotates; gap leakage flow caused by pressure difference in ...

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Номер записи: 10
25-07-2023 дата публикации

Oil sealing and air sealing device for dry vacuum pump and rotary machine

Номер: CN116480584A
Автор: LEI XIAOHONG, WEI MIN, LEI XIAOBO, PENG CHONG
Принадлежит:

The invention relates to an oil and gas sealing device for a dry vacuum pump and a rotary machine. The oil and gas sealing device comprises an oil tank cover, lubricating oil, an oil flinger, a locking nut, a bearing, a bearing fixing seat, a fixing plate, a shaft seal, an O-shaped ring, an expansion ring, a stator and a rotor. The oil sealing and air sealing device for the dry vacuum pump and the rotary machine is good in sealing effect, suitable for the dry vacuum pump, simple in sealing structure, easy to implement, small in occupied space, free of newly-added parts, easy to machine and low in cost, and sealing design is only carried out on components of the oil sealing and air sealing device.

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Номер записи: 11
01-08-2023 дата публикации

Variable-phase-angle multistage roots vacuum pump and working method thereof

Номер: CN116517828A
Автор: LEI XIAOHONG, WEI MIN, LEI XIAOBO, FENG WEI
Принадлежит:

The invention discloses a variable-phase-angle multistage roots vacuum pump and a working method thereof. The variable-phase-angle multistage roots vacuum pump comprises a pump shell, a right rotor 1 and a left rotor 2, wherein the right rotor 1 and the left rotor 2 respectively rotate around respective rotating shafts in opposite directions; the right rotor 1 and the left rotor 2 comprise multiple stages, the position where the connecting line of the gravity center of the first-stage rotor 7 of the right rotor 1 and one blade top coincides with the vertical line passing through the gravity center of the rotor is the initial phase of the right rotor 1, and the initial phase of the second-stage rotor 8 rotates by an angle beta in the rotation direction of the rotor relative to the initial phase of the first-stage rotor 7, and the initial phase rotation angle of the third-stage rotor 9 is 2 * beta, and so on. The passive flow control technology is adopted, the pumping speed fluctuation range ...

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Номер записи: 12