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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 16. Отображено 16.
25-03-2015 дата публикации

Partial discharge measurement device for GIS device under site impulse voltage

Номер: CN104459494A
Автор: DONG MING, REN MING, ZHANG CHONGXING, YE RIXIN, WEN FUXIN, LIU JIALIN, DAI JIANZHUO
Принадлежит:

The invention discloses a partial discharge measurement device for a GIS device under site impulse voltage. The device is used for conducting partial discharge measurement on the GIS device when the GIS device conducts site impulse withstand voltage experiments, the device is used for detecting insulation defects which may exist in the GIS device, and the reliability of the safe operation of the GIS device is improved. The partial discharge measurement device comprises open-loop type rogowski coil sensors, a double-layer shielding cable, a signal differentiator, a signal summer, an attenuator assembly, a filter assembly, a transient voltage clamp device, an I/O data acquisition card and software for measuring and analyzing partial discharge under impulse voltage. The partial discharge measurement device suitable for the GIS device on a site can accurately measure pulse current waveforms of partial discharge, can also more actually obtain the discharge amount of a device with an insulation ...

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Номер записи: 1
07-01-2015 дата публикации

Nitrogen-increasing manganese-increasing method for high-strength steel production

Номер: CN104263876A
Автор: WANG QIANG, BI YONGJIE, WANG MINGJIE, YU LIANGTAO, HU ZENGYUE, WEN FUXIN, ZOU CHUNFENG
Принадлежит:

The invention relates to a nitrogen-increasing manganese-increasing method for high-strength steel production. The method comprises the following steps: feeding manganese nitride core-spun yarns into molten steel for increasing nitrogen and manganese in an LF furnace refining process, wherein the diameter of the manganese nitride core-spun yarns is 12-14mm, the core powder weight of the manganese nitride core-spun yarns is 450-500g/m, and the tare weight is 125-175g/m; feeding 280-300 meters of manganese nitride core-spun yarns into the molten steel per ton, realizing complete nitrogen increase, stably controlling the nitrogen increase of the molten steel to be 50-60ppm, and finishing partial manganese increase in the process of realizing complete nitrogen increase, wherein the manganese increase amount is 0.09-0.10 percent. According to the method, nitrogen is not needed to be blown in each process, the nitrogen increase amount is controlled in one step, the increase of nitrogen in the ...

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Номер записи: 2
28-07-2023 дата публикации

Oil-immersed mutual inductor end screen grounding monitoring protection system

Номер: CN116500492A
Автор: NIU ZONGTAO, WANG ARONG, WEN FUXIN, LIANG RUI, WANG YIBO, ZHAO FENG
Принадлежит:

The invention aims to provide an oil-immersed mutual inductor end screen grounding monitoring protection system with photoelectric signals, which comprises an oil-immersed mutual inductor end screen grounding electric signal monitoring loop, an oil-immersed mutual inductor end screen grounding optical signal monitoring loop and an oil-immersed mutual inductor end screen grounding protection loop, the system can monitor the good grounding state of the end screen, the poor grounding state of the end screen, the non-grounding state of the end screen and the power-off maintenance state. According to the scheme, the grounding state of the end screen can be monitored during operation, the situation that the grounding state is not detected in place by the maintainer and the grounding state is poor in the operation process is avoided, and when the end screen is not grounded, the lightning arrester protects the end screen from being damaged.

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Номер записи: 3
11-03-2015 дата публикации

Method for smelting high-phosphorus molten iron by duplex-slag remaining process

Номер: CN104404195A
Автор: WEN FUXIN, GUO WEIDA, ZHANG PEI, SHEN BINBIN, ZHANG XINSHUO, WANG RONGJIA, GAO SHAN, ZHANG HAIBO, LIU ZHONGJIAN
Принадлежит:

The invention discloses a method for smelting high-phosphorus molten iron by a duplex-slag remaining process, which comprises the following steps: 1) carrying out dephosphorizing smelting in a converter 1; 2) adding semisteel obtained by dephosphorizing smelting into a converter 2 to carry out decarbonizing smelting; 3) carrying out decarbonizing smelting in the converter 2 to obtain acceptable molten steel; and 4) carrying out spattering drying on the furnace slag subjected to decarbonizing smelting, carrying out slag remaining, carrying out next-furnace dephosphorizing smelting, and repeating the steps 1)-3) to complete the smelting of the next-furnace high-phosphorus molten iron. The method can effectively ensure the dephosphorization effect of the dephosphorizing furnace, so that the end phosphorus content of the semisteel in the dephosphorizing furnace is stable at 0.040% below.

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Номер записи: 4
23-09-2015 дата публикации

Oven baking method for top-bottom combined blowing converter

Номер: CN104928433A
Автор: YU LIANGTAO, SHEN BINBIN, WEN FUXIN, ZHANG PEI, WANG MINGJIE, XING MINGMING, WANG QIANG, HU ZENGYUE, ZHANG HAIBO, GAO SHAN, ZOU CHUNFENG
Принадлежит:

The invention relates to an oven baking method for a top-bottom combined blowing converter. Carbon coke enters a steel scrap hopper and a converter overhead bunker respectively; when an oven is baked so as to open a new converter, carbon coke in the steel scrap hopper is ignited in advance, and the oven is baked with medium fire firstly; during baking, the converter overhead bunker adds an appropriate amount of carbon coke in the converter every 4-5 minutes, and the baking time is controlled to be 50-60 minutes; the oven is baked with big fire, and during baking, an appropriate amount of carbon coke is added in the converter every 2 minutes; when the flame at the converter mouth becomes white after the carbon coke in the overhead bunker is added in the converter, the oxygen supply is closed by lifting an oxygen lance, and the oven baking is finished. According to the oven baking method for the converter, which is disclosed by the invention, the carbon coke is sufficiently combusted, the ...

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Номер записи: 5
03-06-2015 дата публикации

Shut-down heat preservation method for converter

Номер: CN104673955A
Автор: WEN FUXIN, GUO WEIDA, ZHANG PEI, WANG MINGJIE, SHEN BINBIN, YU LIANGTAO, WANG QIANG, HU ZENGYUE, ZOU CHUNFENG, GAO ZHIBIN
Принадлежит:

The invention discloses a shut-down heat preservation method for a shut-downconverter. The method comprises steps as follows: (1), 7-9 tons of coke is prepared before converter baking and is ignited with oxygen; (2), a body of the converter is tilted forwards by 50 degrees, the ignited coke is poured into the converter, the body is shaken to a zero position, an oxygen lance is lowered until the head of the oxygen lance is 2.3-2.8 meters higher than the bottom of the converter for oxygen blowing and combustion assistance, the oxygen blowing pressure is controlled in a range of 0.09-0.11Mpa, and the oxygen blowing time is controlled in a range of 9-11 minutes; (3) a converter opening is sealed by a steel plate for heat preservation, the body is shaken forwards to be flat during heat preservation, meanwhile, oxygen is introduced for combustion assistance, the temperature of a converter shell is higher than 100 DEG C during the show-down period, and the temperature of a converter chamber is ...

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Номер записи: 6
22-04-2015 дата публикации

Refining argon blowing method applied to SPHC steel grade

Номер: CN104531953A
Автор: WANG QIANG, WANG MINGJIE, YU LIANGTAO, HU ZENGYUE, WEN FUXIN, ZOU CHUNFENG, BI YONGJIE
Принадлежит:

The invention discloses a refining argon blowing method applied to an SPHC steel grade. The method comprises the flowing steps that (1) ferro-manganese-aluminum is used for deoxidizing when steel is sent out from a converter, and after the steel is sent out, molten steel temperature of a steel ladle is controlled to range from 1600 DEG C to 1620 DEG C; (2) after the steel ladle enters a station, argon is pumped, stirring is conducted for 2-2.5 min, the pressure of the argon ranges from 0.8 MPa to 1.2 MPa, then the pressure of the argon is adjusted to range from 0.2 MPa to 0.4 MPa to measure temperature and determine oxygen, feeding aluminum wire alloying is conducted according to measured aluminum content, and the aluminum content is controlled to range from 0.04% to 0.05%; (3) after the feeding aluminum wire alloying is finished, argon stirring is conducted for 2-3 min, and the pressure of the argon ranges from 0.8 MPa to 1.2 MPa; after stirring, the argon is closed, and the steel ladle ...

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Номер записи: 7
09-04-2014 дата публикации

Method for cooling molten iron by using converter fly ash

Номер: CN103710487A
Автор: WANG QIANG, BI YONGJIE, LU BO, JIAO JINPENG, WANG MINGJIE, YU LIANGTAO, HU ZENGYUE, WEN FUXIN
Принадлежит:

The invention relates to a method for cooling molten iron by using converter fly ash. The method comprises the following steps: conveying collected converter fly ash to a stock bin for later use; performing KR desulfuration and stirring treatment on the molten iron in a molten iron tank according to the prior art, wherein the clearance height of the molten iron tank is 500-900 millimeters, and the amount of the molten iron in the molten iron tank is 100-140 tons; after the KR desulfuration and stirring treatment is finished, measuring the temperature of molten iron in the molten iron tank; when the measured temperature of the molten iron is higher than 1,280 DEG C, blowing 1.2-3t of converter fly ash into the molten iron tank from the stock bin by using high-pressure nitrogen gas. According to the method, the converter fly ash does not need to be subjected to subsequent processing, and only a fixed amount of converter fly ash is added according to the temperature of the molten iron, so ...

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Номер записи: 8
02-07-2014 дата публикации

Method for cooling KR desulfurized molten iron by use of pig iron

Номер: CN103898267A
Автор: WANG QIANG, WANG MINGJIE, YU LIANGTAO, HU ZENGYUE, WEN FUXIN, ZOU CHUNFENG
Принадлежит:

The invention belongs to the technical field of steelmaking and specifically relates to a method for cooling KR (Knotted Reactor) desulfurized molten iron by use of pig iron. The method for cooling the KR desulfurized molten iron by use of the pig iron comprises the following steps: 1) picking up the pig iron by using an electromagnetic chuck mounted on a travelling crane, hoisting and stopping at a position which is 20-50 centimeters above a molten iron tank in which molten iron at a temperature higher than 1320 DEG C is held, roasting the pig iron by using radiant heat of the molten iron tank for 30-60 seconds and then cancelling the electromagnetic attraction so that the pig iron drops into the molten iron under the action of own gravity of the pig iron; 2) stirring and melting the added pig iron by using a stirring paddle for KR desulfurization; 3) repeating the steps 1) and 2) until the temperature of the molten iron is reduced below 1320 DEG C. The method is simple in process and ...

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Номер записи: 9
25-03-2015 дата публикации

Method for reducing content of total iron in final slag of dephosphorization furnace

Номер: CN104451022A
Автор: WEN FUXIN, ZHANG PEI, SHEN BINBIN
Принадлежит:

The invention discloses a method for reducing content of total iron in final slag of a dephosphorization furnace. The method comprises the following steps: (1) completing addition of a cold charge during blowing of the dephosphorization furnace when having 2-4 minutes to a blowing endpoint; and (2) after the blowing is over, starting bottom blowing and strong stirring for 50-70 seconds, and then controlling nitrogen lance position modes in a high-low-low manner, wherein the nitrogen pressure is at 1.5-1.8MPa, the nitrogen blowing time lasts for 50-70 seconds, and the content of the total iron in the final slag of the dephosphorization furnace is reduced to below 14.2% after the melting is finished.

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Номер записи: 10
05-02-2014 дата публикации

Control method for reducing total iron content of SPHC (steel plate heat commercial) final slag

Номер: CN103555879A
Автор: WEN FUXIN, GUO WEIDA, ZHANG PEI, SHEN BINBIN, WANG MINGJIE
Принадлежит:

The invention provides a control method for reducing the total iron content of SPHC (steel plate heat commercial) final slag. The control method comprises the following steps: in a molten iron pretreatment process, controlling the temperature of the molten iron fed into a furnace at 1220-1300 DEG C; controlling the addition amount of sinter at 4.3-4.7 tons, and adding the sinter in a batch addition manner; adopting lime, limestone and dolomite for the first batch of slag charge, adopting limestone for the next batch of slag charge at the end point, and adopting lime for the last batch of slag charge; completely adding the next batch of slag charge 4 minutes before the smelting end point of a converter, and adding the last batch of lime before the sublance TSO measurement at the end point; controlling the process lance position; controlling the process oxygen pressure; controlling the lance pressing time; after the sublance TSO measurement, starting bottom blowing and strong stirring, and ...

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Номер записи: 11
01-07-2015 дата публикации

Portable partial discharge detecting and diagnosing device

Номер: CN104749498A
Автор: DONG MING, REN MING, XIAO ZHIGANG, ZHANG CHONGXING, WEN FUXIN, LIU JIALIN
Принадлежит:

The invention discloses a portable partial discharge detecting and diagnosing device. The device comprises a partial discharge detector, a cable, a pre-sensor and a charger device, wherein the partial discharge detector comprises a lower computer and an upper computer; the lower computer comprises a simulation unit module, an FPGA module, an ARM module, a clock and reset module and a power management module; the upper computer is a Linux industrial personal computer. The portable partial discharge detecting and diagnosing device is provided with a 14-bit 100MHz two-channel acquisition system having the maximum storage depth of 64Mbit; the display of the characteristic spectrum of defects and the model identification of faults can be completed accurately in such a manner of PRPD clustering analysis in combination with impulse waveform time-frequency analysis; meanwhile, a radio-frequency sensor and an ultrahigh-frequency sensor are simultaneously provided, and the pulse current detection ...

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Номер записи: 12
12-05-2023 дата публикации

Device for detecting grounding and state of end screen of high-voltage bushing of transformer

Номер: CN116106783A
Автор: WEN FUXIN, NIU ZONGTAO, ZHAO FENG, LIANG RUI, WANG YIBO, ZHOU YUAN
Принадлежит:

The invention discloses a grounding and state detection device for a high-voltage bushing end screen of a transformer. The grounding and state detection device comprises a bushing end screen, an end screen grounding unit and a grounding detection unit, wherein the end screen grounding unit and the grounding detection unit are electrically connected with the bushing end screen; the end screen grounding unit comprises an end screen lead column, a grounding pressing device, an end screen grounding cover, a grounding spring, a grounding electrode and a fastening bolt A; the grounding detection unit comprises an insulation fixing module, a parallel lead column, a bushing tap grounding monitoring loop, a monitoring bolt, a protective cover and a fastening bolt B. According to the invention, while the grounding reliability of the end screen is improved, the grounding state of the end screen can be detected in time through the parallel detection loop after maintenance is finished, and the grounding ...

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Номер записи: 13
25-03-2015 дата публикации

Device for measuring and analyzing partial discharge under surge voltage

Номер: CN104459497A
Автор: REN MING, DONG MING, ZHANG CHONGXING, WEN FUXIN, LIU JIALIN, YE RIXIN, DAI JIANZHUO
Принадлежит:

The invention discloses a device for measuring and analyzing the partial discharge under surge voltage. Partial discharge measurement is conducted on a GIS while on-site impulse withstand voltage is conducted on the GIS, the device is used for detecting insulation defects possibly existing in the device, and the safety running reliability of the GIS is improved. The device comprises an open-loop type radio frequency current sensor, a dual-layer shielding cable, an attenuator suite, a filter suite, a transient voltage clamping device, an I/O data acquisition card and software for measuring and analyzing partial discharge under surge voltage. The open-loop type radio frequency current sensor is used for inputting acquired signals to the data acquisition card through the attenuator suite, the high-pass filter suite and the transient voltage clamping device in sequence by means of the dual-layer shielding cable. Digital signals acquired by the I/O data acquisition card are displayed and are ...

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Номер записи: 14
23-05-2023 дата публикации

Subcutaneous longitudinal crack control method for peritectic high-aluminum steel continuous casting billet

Номер: CN116140568A
Автор: CHEN CHANGYI, TONG SHENGGANG, ZHAO DENGBAO, WEN FUXIN, CHO MIN, GAO LONGYONG, SHAO MINGHAI, ZHAO XIAOLUN, ZHANG LIBIAO, NIU HONGBO, ZHAO LIANG, MA QIANG, LI CHENGLONG, GUO JINXIANG, LI NING, LIU TONGTANG, REN PENG
Принадлежит:

The invention belongs to the technical field of metallurgical steelmaking, and particularly relates to a peritectic high-aluminum steel continuous casting billet subsurface longitudinal crack control method which is used for reducing the AL content of peritectic high-aluminum steel. A horn mouth large ladle sleeve is designed for plug-in casting and a silica gel sealing gasket; designing covering slag special for peritectic alloy high aluminum, and stabilizing the viscosity and crystallization temperature of the covering slag; the argon blowing flow of the large ladle sleeve is increased to 70-90 L/min; the highest pulling speed of peritectic high-aluminum steel is controlled to 1.4 m/min; designing a special slag salvaging process for the crystallizer; the variation range of the insertion depth of the submersed nozzle is reduced; and a weak cooling peritectic water distribution process is adopted. The influence of Als element redox on denaturation of the casting powder is reduced, and ...

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Номер записи: 15
14-05-2014 дата публикации

Duplex steel making method of converter

Номер: CN103789482A
Автор: GUO WEIDA, ZHANG PEI, WEN FUXIN, BI YONGJIE, WANG MINGJIE, SHEN BINBIN, YU LIANGTAO, WANG QIANG, HU ZENGYUE
Принадлежит:

The invention discloses a duplex steel making method of a converter. The duplex steel making method comprises the following steps: pretreating hot metal; dephosphorizing in the converter; decarbonizing in the converter, wherein in the dephosphorizing process of the converter, a low-sulfur briquette is added in the molten steel, and the addition amount is 50-70 kg/t. By using the duplex steel making method of the converter, disclosed by the invention, the quality of the molten steel can be improved.

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Номер записи: 16