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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 18. Отображено 18.
25-03-2015 дата публикации

Time-domain pulse detection method of water inlet state of cross-linked cable connector

Номер: CN104458821A
Автор: XIA RONG, WANG YULI, MENG SHAOXIN, YANG FAN, ZHAO JIANKANG, YANG DAN
Принадлежит:

The invention discloses a time-domain pulse detection method of a water inlet state of a cross-linked cable connector. The method comprises the following steps: separating a circuit in which the cable is arranged from a power grid in a power cutoff manner, and respectively carrying out phase-splitting short connection of a metal shield layer of each phase cable in the circuit; testing resistance values on two ends of the cross-linked cable and resistance values on two ends of the cross-linked cable connector by utilizing a resistance tester, wherein the resistance values are a cable characteristic resistance Z1, a connector characteristic resistance Z2, a connector characteristic resistance Z3 and a cable characteristic resistance Z4 in sequence from left to right; injecting a steep rising edge pulse Imp with known polarity into a space between a conductor wire core and the metal shield layer of the cross-linked cable on the beginning end of the cable, wherein the rising edge time is less ...

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Номер записи: 1
08-09-2010 дата публикации

Medium-high voltage single-core crosslinked cable induction voltage and circular-current online detection method and device

Номер: CN0101825657A
Автор: WENJIE LI, JUNHUA LUO, SHAOXIN MENG, RONG XIA, HONGJUN ZHANG, LI WENJIE, LUO JUNHUA, MENG SHAOXIN, XIA RONG, ZHANG HONGJUN
Принадлежит:

The invention discloses a medium-high voltage single-core crosslinked cable induction voltage and circular-current online detection method and a device. The method comprises the following steps: a load-current sensor is sheathed on a cable body under the charged operation condition so as to couple cable load current; a grounding current sensor is sheathed on a cable metallic protecting layer grounding outgoing line so as to couple grounding current of the metallic protecting layer; and the induction voltage of the cable metallic protecting layer is obtained by an induction voltage pickup probe clamped between a fracture of the cable metallic protecting layer grounding outgoing line and a grounding electrode or between the metallic protecting layer outgoing line of a cable line protection grounding side and the grounding electrode. The induction voltage and circular current values of the medium-high voltage single-core crosslinked cable metallic protecting layer can be obtained by optical ...

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Номер записи: 2
17-02-2010 дата публикации

Method for detecting and identifying constructional deficiencies of high-voltage and supervoltage cables and cable sets

Номер: CN0101650404A
Автор: LUO JUNHUA, ZHAO JIANKANG, LI WENJIE, XIA RONG, MENG SHAOXIN, JUNHUA LUO, JIANKANG ZHAO, WENJIE LI, RONG XIA, SHAOXIN MENG
Принадлежит:

The invention provides a method for detecting and identifying constructional deficiencies of high-voltage and supervoltage cables and cable sets, which belongs to the field of power cable detection. Ameasurement unit conditions and acquires signals of a sensor and the signals are transmitted to an industry control computer by a USB communication mode. Software extracts various characteristic quantities of a discharge spectrum from local discharge signals and compares with a local discharge spectrum caused by the constructional deficiency of a prepared typical joint so as to judge whether an on-site running cable joint has deficiencies or not and judge the type of the deficiencies. The invention has the advantages that the method can carry out local discharge detection on electrified cablemiddle joints and effectively monitor insulated conditions according to the on-site requirement, thereby realizing the detection and the identification on the constructional deficiencies of the joints, ...

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Номер записи: 3
08-04-2015 дата публикации

Verification method for high-frequency partial discharge live detection of high-voltage cable accessory

Номер: CN104502876A
Автор: XIA RONG, WANG YULI, ZHAO JIANKANG, MENG SHAOXIN, YANG DAN, LI WENJIE, ZHANG HONGJUN, LIU HONGWU
Принадлежит:

The invention discloses a verification method for high-frequency partial discharge live detection of a high-voltage cable accessory. The method comprises the following steps: clamping a high frequency current transformer (HFCT) on a metal sleeve outgoing line of an insulating joint; arranging external coupling capacitors Cc on both sides of a joint insulating flange; injecting a verification pulse IPG through the Cc by adopting a standard pulse generator; detecting Id transmitted to the outgoing line of the IPG by adopting the HFCT; selecting a frequency band FD3 on which the signal to noise ratio of the HFCT is highest; injecting five IPGs with different quantities of electric charge Qcal in sequence; calculating the equivalent discharge Qd of the Id in the FD3; calculating the equivalent coefficient kmi of the Qcal and the Qd; performing linear regression on the kmi to obtain a verification coefficient Fcal; correcting QHFCT detected by the HFCT with the Fcal to obtain QCAL. By adopting ...

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Номер записи: 4
18-02-2015 дата публикации

Lateral slip measurement unit used for operation of high-voltage cable laid in snaking shape

Номер: CN104359439A
Автор: ZHANG ZHENPENG, MENG SHAOXIN, ZHAO JIANKANG, RAO WENBIN
Принадлежит:

The invention discloses a lateral slip measurement unit used for operation of a high-voltage cable laid in a snaking shape. The measurement unit comprises an encapsulated displacement sensor, the measurement end of the displacement sensor is connected with a stainless steel ring buckle, and the other end and the encapsulated bottom end of the displacement sensor are connected with a bottom end fixing device. The stainless steel ring buckle is arranged on a cable sheath at the snakelike wave crest of the cable laid in the snaking shape, and the bottom end fixing device is fixed to the ground. By means of the action of load currents and operation temperature, the cable laid in the snaking shape is lifted to a certain position from the original laying position, and lateral slip is generated; meanwhile, due to change of the load currents and the operation temperature, the lateral slip changes, the displacement sensor needs two-direction measurement, and change of the lateral slip can be measured ...

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Номер записи: 5
25-03-2015 дата публикации

Direct-current cable insulation material

Номер: CN104448493A
Автор: CHEN ZHENGZHENG, ZHAO JIANKANG, OUYANG BENHONG, MENG SHAOXIN, LI JIANYING, WANG SHIHANG
Принадлежит:

The invention provides a direct-current cable insulation material. The insulation material is prepared from the following components in parts by weight: 100 parts of low-density polyethylene, 0.5 to 5 parts of modified nano aluminum hydroxide, 1 to 2.5 parts of a cross-linking agent and 0.1 to 0.5 part of an antioxidant. According to the prepared direct-current cable insulation material, the influence of the temperature to the electric conductivity can be effectively improved, namely the property that the electric conductivity of the polyethylene is increased along with the temperature can be changed, and the property that the field intensity in the direct-current cable insulation is changed along with the change of the temperature can be effectively improved; the insulation material can be used for suppressing the accumulation of the space charge and improving the local electric field distribution, and the insulation property is relatively good.

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Номер записи: 6
25-06-2008 дата публикации

Method for testing cable insulation thickness

Номер: CN0101206109A
Автор: YANG LIMING, MENG SHAOXIN, LIMING YANG, SHAOXIN MENG
Принадлежит:

The invention relates to a measurement method for XLPE power cable insulation thickness which consists of a scanner and a data processor. The invention is characterized in that: the scanner is responsible for scanning the sample sheet and producing the sample sheet into a picture, the data processor analyzes and computes the picture through the image identification technology, the inspection result is displayed by the data processor, and the result data and the marked picture are generated into a record report. The invention adopts the method that the scanner is firstly used to scan the insulation sheet of the cable and then the operation is circularly checked by the data processor, to automatically compute the insulation thickness and the eccentricity of the insulation sheet of the cable the thickness and the unevenness of the inner shield layer and the outer shield layer, so the method of the invention is simple and reliable, and has high accuracy and quick detection speed.

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Номер записи: 7
09-06-2010 дата публикации

Method for testing cable insulation thickness

Номер: CN0101206109B
Автор: MENG SHAOXIN, YANG LIMING, SHAOXIN MENG, LIMING YANG
Принадлежит:

The invention relates to a measurement method for XLPE power cable insulation thickness which consists of a scanner and a data processor. The invention is characterized in that: the scanner is responsible for scanning the sample sheet and producing the sample sheet into a picture, the data processor analyzes and computes the picture through the image identification technology, the inspection result is displayed by the data processor, and the result data and the marked picture are generated into a record report. The invention adopts the method that the scanner is firstly used to scan the insulation sheet of the cable and then the operation is circularly checked by the data processor, to automatically compute the insulation thickness and the eccentricity of the insulation sheet of the cablethe thickness and the unevenness of the inner shield layer and the outer shield layer, so the method of the invention is simple and reliable, and has high accuracy and quick detection speed.

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Номер записи: 8
06-07-2011 дата публикации

Distributed local discharge on-line monitoring method and device for high voltage cable system

Номер: CN0102116824A
Автор: JUNHUA LUO, WENJIE LI, JIANKANG ZHAO, SHAOXIN MENG, RONG XIA, LUO JUNHUA, LI WENJIE, ZHAO JIANKANG, MENG SHAOXIN, XIA RONG
Принадлежит:

The invention provides a distributed local discharge on-line monitoring method and a distributed local discharge on-line monitoring device for a high voltage cable system. A high-frequency broadband electromagnetic coupling sensor is arranged on each accessory of an entire cable line; the sensors are sleeved on grounding lines or crossed and interconnected lines of the cable accessories for coupling a local discharge signal; a 50Hz current sensor is sleeved on a cable body for coupling a power frequency current signal; a lower computer is used for conditioning a sensor signal, acquiring the sensor signal at a high speed and preprocessing the sensor signal; and a digital signal is transmitted to upper computer monitoring software through an optical fiber transmission network; thus on-line monitoring of distributed local discharge of high voltage cable equipment is realized. The method and the device have the advantage that: the on-line monitoring of the local discharge can be realized by ...

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Номер записи: 9
17-02-2010 дата публикации

Local discharge on-line detection method and device of high-voltage cross-linking polythene cable system

Номер: CN0101650406A
Автор: LI WENJIE, LUO JUNHUA, ZHAO JIANKANG, MENG SHAOXIN, XIA RONG, WENJIE LI, JUNHUA LUO, JIANKANG ZHAO, SHAOXIN MENG, RONG XIA
Принадлежит:

The invention relates to local discharge on-line detection method and device of a high-voltage cross-linking polythene cable system. The device comprises a local discharge signal sensor, a local discharge signal conditioning and acquiring unit and an industry control computer. Software anti-interference is carried out on local discharge signals, various kinds of interference and noise are suppressed, weak local discharge signals are extracted from strong interference and are displayed in a discharge capacity form, a three-dimensional spectrum containing discharge times, the discharge capacityand a discharge phase is formed, and data which are continuously monitored by an enclosure are written into a database for the convenience of history inquiry, so that the trend change of the dischargecapacity of each enclosure is grasped and technical data for determining the insulated state of the cable system is provided. The invention has the advantages that: according to the on-site requirements ...

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Номер записи: 10
16-11-2011 дата публикации

Method and apparatus for partial discharge detection of high-voltage electrical power equipment with hardware anti-interference utilization

Номер: CN0102243289A
Автор: ZHENGZHENG CHEN, JIANKANG ZHAO, SHAOXIN MENG, HUIMIN LIU, CHEN ZHENGZHENG, ZHAO JIANKANG, MENG SHAOXIN, LIU HUIMIN
Принадлежит:

The invention provides a method and an apparatus for partial discharge detection of high-voltage electrical power equipment with hardware anti-interference utilization. The apparatus comprises a main-broadband high-frequency sensor, an auxiliary- broadband high-frequency sensor, a power-frequency voltage sensor and a calculating host of synchronous analysis. The calculating host of synchronous analysis, which comprises a data acquisition module, a data processing module, an interference filtering module, and an input and output module, is used for collecting a partial discharging signal, a background interference signal, and a power frequency voltage signal as well as eliminating an interference and storing data. The main-broadband high-frequency sensor, the auxiliary- broadband high-frequency sensor, and the power-frequency voltage sensor are accessed in parallel to the data acquisition module of the calculating host of synchronous analysis. An advantage of the invention is to utilize ...

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Номер записи: 11
09-05-2012 дата публикации

Method for detecting and identifying constructional deficiencies of high-voltage and supervoltage cables and cable sets

Номер: CN0101650404B
Автор: JUNHUA LUO, JIANKANG ZHAO, WENJIE LI, RONG XIA, SHAOXIN MENG, LUO JUNHUA, ZHAO JIANKANG, LI WENJIE, XIA RONG, MENG SHAOXIN
Принадлежит:

The invention provides a method for detecting and identifying constructional deficiencies of high-voltage and supervoltage cables and cable sets, which belongs to the field of power cable detection. A measurement unit conditions and acquires signals of a sensor and the signals are transmitted to an industry control computer by a USB communication mode. Software extracts various characteristic quantities of a discharge spectrum from local discharge signals and compares with a local discharge spectrum caused by the constructional deficiency of a prepared typical joint so as to judge whether an on-site running cable joint has deficiencies or not and judge the type of the deficiencies. The invention has the advantages that the method can carry out local discharge detection on electrified cable middle joints and effectively monitor insulated conditions according to the on-site requirement, thereby realizing the detection and the identification on the constructional deficiencies of the joints ...

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Номер записи: 12
11-07-2012 дата публикации

Intelligent ultrahigh-voltage XLPE power cable capable of monitoring partial discharge on line

Номер: CN0101783204B
Автор: SHAOXIN MENG, RONG XIA, JIANKANG ZHAO, MENG SHAOXIN, XIA RONG, ZHAO JIANKANG
Принадлежит:

The invention relates to an intelligent ultrahigh-voltage XLPE power cable capable of monitoring partial discharge on line, which comprises the following components from inside to outside in sequence: a conductor core, an inner semi-conductive layer, an XLPE insulator, an outer semi-conductive layer, a semi-conductive buffer layer, partial discharge detection space phase fiber gratings, fiber casing pipes containing buffer protective layers, a corrugated aluminum sheath, an anti-corrosion coating and an outer sheath. Two fiber casing pipes containing the buffer protective layers are pre-embedded in the semi-conductive buffer layer; each fiber casing pipe containing the buffer protective layer is coated with one partial discharge detection fiber grating to form a set of partial discharge fiber grating detection unit; and each set of partial discharge fiber grating detection unit is spirally wound in the semi-conductive buffer layer. Due to the adoption of the invention, the insulation state ...

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Номер записи: 13
04-07-2012 дата публикации

Medium-high voltage single-core crosslinked cable induction voltage and circular-current online detection method and device

Номер: CN0101825657B
Автор: WENJIE LI, JUNHUA LUO, SHAOXIN MENG, RONG XIA, HONGJUN ZHANG, LI WENJIE, LUO JUNHUA, MENG SHAOXIN, XIA RONG, ZHANG HONGJUN
Принадлежит:

The invention discloses a medium-high voltage single-core crosslinked cable induction voltage and circular-current online detection method and a device. The method comprises the following steps: a load-current sensor is sheathed on a cable body under the charged operation condition so as to couple cable load current; a grounding current sensor is sheathed on a cable metallic protecting layer grounding outgoing line so as to couple grounding current of the metallic protecting layer; and the induction voltage of the cable metallic protecting layer is obtained by an induction voltage pickup probe clamped between a fracture of the cable metallic protecting layer grounding outgoing line and a grounding electrode or between the metallic protecting layer outgoing line of a cable line protection grounding side and the grounding electrode. The induction voltage and circular current values of the medium-high voltage single-core crosslinked cable metallic protecting layer can be obtained by optical ...

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Номер записи: 14
21-07-2010 дата публикации

Intelligent ultrahigh-voltage XLPE power cable capable of monitoring partial discharge on line

Номер: CN0101783204A
Автор: MENG SHAOXIN, XIA RONG, ZHAO JIANKANG, SHAOXIN MENG, RONG XIA, JIANKANG ZHAO
Принадлежит:

The invention relates to an intelligent ultrahigh-voltage XLPE power cable capable of monitoring partial discharge on line, which comprises the following components from inside to outside in sequence: a conductor core, an inner semi-conductive layer, an XLPE insulator, an outer semi-conductive layer, a semi-conductive buffer layer, partial discharge detection fiber gratings, fiber casing pipes containing buffer protective layers, a corrugated aluminum sheath, an anti-corrosion coating and an outer sheath. Two fiber casing pipes containing the buffer protective layers are pre-embedded in the semi-conductive buffer layer; each fiber casing pipe containing the buffer protective layer is coated with one partial discharge detection fiber grating to form a set of partial discharge fiber grating detection unit; and each set of partial discharge fiber grating detection unit is spirally wound in the semi-conductive buffer layer. Due to the adoption of the invention, the insulation state in the ultrahigh-voltage ...

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Номер записи: 15
18-04-2023 дата публикации

Method and device for evaluating extrusion flow characteristics of crosslinked polyethylene insulation material

Номер: CN115983055A
Автор: ZHANG ZHENPENG, LI ZHONGLEI, XU TAO, PENG CHAO, MENG SHAOXIN, ZHAO JIANKANG, XU MINGZHONG, HAN TAO, DU BOXUE
Принадлежит:

The embodiment of the invention discloses a method and a device for evaluating extrusion flow characteristics of a crosslinked polyethylene insulating material, which are based on a pre-established extrusion model of an extrusion head of the crosslinked polyethylene insulating material and a predetermined viscosity-temperature relational expression of the crosslinked polyethylene insulating material. According to the extrusion model, the preset melt temperature, melt density and melt flow velocity of the crosslinked polyethylene insulation material and the number of filter screens of the extrusion machine head, finite element simulation software is adopted for conducting simulation calculation on the extrusion model, and the extrusion flow characteristics of the crosslinked polyethylene insulation material are determined according to the simulation calculation result. According to the method and the device, the extrusion flow characteristics of the cross-linked polyethylene insulating material ...

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Номер записи: 16
13-04-2021 дата публикации

Special gripper for robot shell manufacturing

Номер: CN212947806U
Автор: MENG SHAOXIN, YE SHILIN, MA JINXUAN, GONG YE, ZANG CHUANMING, 孟少新, 叶世林, 马进宣, 龚叶, 臧传明
Принадлежит: JIANGSU SMART SPECIAL VALVE CO LTD, JIANGSU SMART SPECIAL VALVE CO., LTD., 江苏智能特种阀门有限公司

The utility model discloses a special gripper for robot shell manufacturing, and relates to the technical field of shell manufacturing grippers. The device comprises a fifth shaft of the robot, the top end of the fifth shaft of the robot is connected with a fixed connecting piece in a welded mode, a rotation stopping rod is clamped in the fixed connecting piece, a sixth shaft of the robot is welded to one end of the fifth shaft of the robot, and one end of the sixth shaft of the robot is connected with a connecting flange through screws. Wherein one end of the connecting flange is fixedly connected with the assembling connecting piece, a flange connecting plate is fixed at one end of the assembling connecting piece, an annular rotating multi-loop gas-liquid assembly is fixed at one end of the flange connecting plate, and a rotation stopping connecting plate is fixed at one end of the annular rotating multi-loop gas-liquid assembly. By separating the rotating mechanism from the telescopic ...

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Номер записи: 17
19-03-2014 дата публикации

High-voltage cable insulation defect partial discharge on-line monitoring diagnosis method

Номер: CN103645425A
Автор: XU XIAOGANG, MAI XIAOMING, YU XIN, MENG SHAOXIN, LI WENJIE
Принадлежит:

The invention discloses a high-voltage cable insulation defect partial discharge on-line monitoring diagnosis method, which involves analyzing obtained partial discharge data of various actual manufacturing typical defects from the perspectives of time domain waveform characteristics, spectrum distribution differences, separate spectrum analysis and the like, and establishing a discharge database and a comparison database of the various defects. By use of a high-voltage cable partial discharge detection system, through utilizing signal separating technologies including a three-phase amplitude relation atlas, a three-frequency range amplitude relation atlas and the like, pulse current waveform parameter characteristic value integrated information is analyzed, a discharge accumulation spectrum of on-site measuring data and a same-kind characteristic pulsed discharge cluster are formed, and finally a comparison is made between the discharge accumulation spectrum and the same-kind characteristic ...

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Номер записи: 18