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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 10. Отображено 10.
02-06-2010 дата публикации

Cobalt-nickel-free based alloy for strengthening coating of sealing surface of nuclear power valve

Номер: CN0101717881A
Автор: FU GEYAN, LIU SHUANG, LIU XIUBO, LU JIANDONG, SHI SHIHONG, SUN CHENGFENG, WEI HONGPU, ZHANG ZONGLIE, GEYAN FU, SHUANG LIU, XIUBO LIU, JIANDONG LU, SHIHONG SHI, CHENGFENG SUN, HONGPU WEI, ZONGLIE ZHANG
Принадлежит:

The invention discloses a cobalt-nickel-free based alloy for a strengthening coating of a sealing surface of a nuclear power valve. The alloy contains the following components by weight percentage: 37.5%-38.5% of chromium, 5.0-6.0 % of carbon, 2.0%-2.5% of silicon, 1.0%-1.5% of boron, 0.5%-1.5% of yttrium oxide and the balance of nickel. The mixing alloy powder is compounded, and the strengthening coating is prepared by a laser cladding technology. The obtained cobalt-nickel-free based alloy strengthening coating of the sealing surface of the nuclear power valve has the relative parameters as follows: the average hardness HRC is 45-50, and is 39-43 higher than the traditional cobalt-nickel alloy coating; the grain size is 11-12, and is finer than the traditional plasma spray-welding coating of 9-10 and the flame surfacing welding layer of 8-9, which is favorable for the comprehensive mechanical property correspondingly; the combined bandwidth of the coating and the base body is 25-40 mum ...

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Номер записи: 1
25-04-2023 дата публикации

Heavy water reactor high-tritium loop low-leakage ball valve device

Номер: CN116006715A
Автор: OH NAHOON, WU ZHIGANG, WEI HONGPU, PAN QIANG, CHEN MINGJUN, DONG JUN, LIU SHAOWEI, GAO BINGBING, GONG DAFEI, YANG SHENGKAI, WU WEIJIE, CHEN TIANMIN, LI PANPAN, WANG LONGXIANG, ZHANG XIAOHUI
Принадлежит:

The invention relates to the technical field of operation and maintenance of nuclear power stations, and particularly discloses a heavy water reactor high-tritium loop low-leakage ball valve device. The device comprises a dynamic sealing part and a static sealing part, the dynamic sealing part comprises a V-shaped sealing ring, a spring ring and a disc spring assembly, the V-shaped sealing ring is arranged between the bottom of a valve rod and a valve body in a sleeving mode, and the spring ring is arranged between the middle of the valve rod and the valve body in a sleeving mode to seal the valve rod and the valve body; the disc spring assembly is arranged above the filler assembly in a sleeving mode and applies downward reset pressure to the filler assembly. The static sealing part comprises a mounting flange, a sealing gasket and an O-shaped ring, and the mounting flange is of a hollow columnar structure and wraps the outer side of the valve body; the O-shaped rings are arranged in the ...

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Номер записи: 2
22-09-2010 дата публикации

Cobalt-free nickel-based alloy

Номер: CN0101838758A
Автор: GEYAN FU, SHUANG LIU, JIANDONG LU, HONGPU WEI, ZONGLIE ZHANG, FU GEYAN, LIU SHUANG, LU JIANDONG, WEI HONGPU, ZHANG ZONGLIE
Принадлежит:

The invention discloses cobalt-free nickel-based alloy powder. The cobalt-free nickel-based alloy powder comprises the following components in percentage by weight: 1.0 to 1.2 percent of carbon (C), 24.0 to 28.0 percent of chromium (Cr), 4.0 to 6.0 percent of wolfram (W), 2.4 to 2.8 percent of silicon (Si), 6.0 to 10.0 percent of aluminum (Al), 4.0 to 6.0 percent of molybdenum (Mo), 0.8 to 1.0 percent of boron, 1.0 to 5.0 percent of yittrium oxide (Y2O3) and the balance of nickel (Ni). The alloy coating prepared by combining the formula of the cobalt-free nickel-based alloy powder with the laser cladding process has a compact structure and no defects, can be well and metallurgically combined with a nuclear valve substrate and has high wear resistance at a high temperature, so that the cobalt-free nickel-based alloy powder is particularly suitable for a nuclear valve sealing face and meets the requirements of the valve working in a nuclear environment.

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Номер записи: 3
01-09-2010 дата публикации

Nickel chromium alloy for sealing face of nuclear power valve

Номер: CN0101629256B
Автор: FU GEYAN, SHI SHIHONG, LIU XIUBO, ZHANG ZONGLIE, LU JIANDONG, WEI HONGPU, LIU SHUANG, GEYAN FU, SHIHONG SHI, XIUBO LIU, ZONGLIE ZHANG, JIANDONG LU, HONGPU WEI, SHUANG LIU
Принадлежит:

The invention discloses a nickel chromium alloy for a sealing face of a nuclear power valve. The nickel chromium alloy comprises the following components in percentage by weight: 26.0-28.0 percent of chrome, 2.0-2.5 percent of silicon, 1.1-1.3 percent of boron, 4.5-5.5 percent of molybdenum, 3.0-4.0 percent of tungsten, 0.9-1.1 percent of carbon and the balance of nickel. Meanwhile, a coating layer is prepared by a laser cladding technology so as to obtain a sealing face coating layer of a nickel-based alloy nuclear power valve, which has the following relevant parameters: the rigidity is HRC42-46 which is slightly higher than HRC39-43 of a Stellite-6 cobalt-based alloy coating layer; the tissue grain fineness number of the coating layer is 11-12 grades which is superior to 9-10 grades of a general plasma jet welding layer and 8-9 grades of a flame resurfacing welding layer; and the width of a combination band of the coating layer and a basal body is 10-30 micrometers which is superior ...

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Номер записи: 4
10-08-2011 дата публикации

Cobalt-free nickel-based alloy

Номер: CN0101838758B
Автор: GEYAN FU, SHUANG LIU, JIANDONG LU, HONGPU WEI, ZONGLIE ZHANG, FU GEYAN, LIU SHUANG, LU JIANDONG, WEI HONGPU, ZHANG ZONGLIE
Принадлежит:

The invention discloses cobalt-free nickel-based alloy powder. The cobalt-free nickel-based alloy powder comprises the following components in percentage by weight: 1.0 to 1.2 percent of carbon (C), 24.0 to 28.0 percent of chromium (Cr), 4.0 to 6.0 percent of wolfram (W), 2.4 to 2.8 percent of silicon (Si), 6.0 to 10.0 percent of aluminum (Al), 4.0 to 6.0 percent of molybdenum (Mo), 0.8 to 1.0 percent of boron, 1.0 to 5.0 percent of yittrium oxide (Y2O3) and the balance of nickel (Ni). The alloy coating prepared by combining the formula of the cobalt-free nickel-based alloy powder with the laser cladding process has a compact structure and no defects, can be well and metallurgically combined with a nuclear valve substrate and has high wear resistance at a high temperature, so that the cobalt-free nickel-based alloy powder is particularly suitable for a nuclear valve sealing face and meets the requirements of the valve working in a nuclear environment.

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Номер записи: 5
11-08-2010 дата публикации

No-co ferrous alloy powder composition for sealing face of nuclear power valve

Номер: CN0101797643A
Автор: GEYAN FU, JIEGUO HE, JIA LIU, SHUANG LIU, XIUBO LIU, SHIHONG SHI, HONGPU WEI, MEI XU, FU GEYAN, HE JIEGUO, LIU JIA, LIU SHUANG, LIU XIUBO, SHI SHIHONG, WEI HONGPU, XU MEI
Принадлежит:

The invention belongs to the field of alloy material, relating to no-co ferrous alloy, in particular to no-co ferrous alloy for enhancing material of the sealing face of a nuclear power valve. The no-co ferrous alloy powder composition contains the following ingredients by weight percent: 20.5%-21.5% of Cr, 3.0%-3.5% of Ni, 3.0%-3.5% of Mn, 2.0%-2.5% of Si, 0.9%-1.0% of C, 1.5%-2.0% of Mo, 0.7%-1.2% of W, 0.3%-0.5% of V, P is less than or equal to 0.02%, S is less than or equal to 0.02%, 0.5%-1.0% of Y and the balance of Fe. The no-co ferrous alloy powder composition contains no noble metal of Co, at the same time, since laser cladding technology is adopted to prepare the coating, the microhardness of the cladding layer is 1.6-1.8 times of that the stainless steel matrix. The no-co ferrous alloy powder composition has excellent high-temperature abrasion performance and high-temperature corrosion resistance, so the no-co ferrous alloy powder composition can prolong the service life of the ...

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Номер записи: 6
16-04-2014 дата публикации

CFD (computational fluid dynamics) based method for computing equivalent length of valve

Номер: CN103729505A
Автор: CHEN TIANMIN, WEI HONGPU, YAO QING, WU JINGPU, WANG LONGXIANG, GAO KAIKE
Принадлежит:

The invention relates to a CFD (computational fluid dynamics) based method for computing equivalent length of a valve. The method includes the steps: establishing a three-dimensional assembly model of the valve, after an extension section is added to an entry and exit position of the valve model, importing the model into CFD software, working out pressure values of multiple working conditions by analog calculation of the CFD software and computing corresponding pressure differences; according to the pressure differences, respectively computing multiple flow coefficient values through a formula, and then computing an average flow coefficient value; computing an equivalent length value of the valve through a formula. Flow performance data of the valve are obtained by the aid of CFD technological analogue simulation, only drawings are needed to be used for completion in a virtual prototype phase in the initial stage of development, and the situations that manpower and material resources are ...

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Номер записи: 7
24-08-2011 дата публикации

No-co ferrous alloy powder composition and its uses

Номер: CN0101797643B
Автор: FU GEYAN, HE JIEGUO, LIU JIA, LIU SHUANG, LIU XIUBO, SHI SHIHONG, WEI HONGPU, XU MEI, GEYAN FU, JIEGUO HE, JIA LIU, SHUANG LIU, XIUBO LIU, SHIHONG SHI, HONGPU WEI, MEI XU
Принадлежит:

The invention belongs to the field of alloy material, relating to no-co ferrous alloy, in particular to no-co ferrous alloy for enhancing material of the sealing face of a nuclear power valve. The no-co ferrous alloy powder composition contains the following ingredients by weight percent: 20.5%-21.5% of Cr, 3.0%-3.5% of Ni, 3.0%-3.5% of Mn, 2.0%-2.5% of Si, 0.9%-1.0% of C, 1.5%-2.0% of Mo, 0.7%-1.2% of W, 0.3%-0.5% of V, P is less than or equal to 0.02%, S is less than or equal to 0.02%, 0.5%-1.0% of Y and the balance of Fe. The no-co ferrous alloy powder composition contains no noble metal of Co, at the same time, since laser cladding technology is adopted to prepare the coating, the microhardness of the cladding layer is 1.6-1.8 times of that the stainless steel matrix. The no-co ferrous alloy powder composition has excellent high-temperature abrasion performance and high-temperature corrosion resistance, so the no-co ferrous alloy powder composition can prolong the service life of the ...

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Номер записи: 8
13-04-2011 дата публикации

Cobalt-nickel-free based alloy for strengthening coating of sealing surface of nuclear power valve

Номер: CN0101717881B
Автор: FU GEYAN, LIU SHUANG, LIU XIUBO, LU JIANDONG, SHI SHIHONG, SUN CHENGFENG, WEI HONGPU, ZHANG ZONGLIE, GEYAN FU, SHUANG LIU, XIUBO LIU, JIANDONG LU, SHIHONG SHI, CHENGFENG SUN, HONGPU WEI, ZONGLIE ZHANG
Принадлежит:

The invention discloses a cobalt-nickel-free based alloy for a strengthening coating of a sealing surface of a nuclear power valve. The alloy contains the following components by weight percentage: 37.5%-38.5% of chromium, 5.0-6.0 % of carbon, 2.0%-2.5% of silicon, 1.0%-1.5% of boron, 0.5%-1.5% of yttrium oxide and the balance of nickel. The mixing alloy powder is compounded, and the strengthening coating is prepared by a laser cladding technology. The obtained cobalt-nickel-free based alloy strengthening coating of the sealing surface of the nuclear power valve has the relative parameters asfollows: the average hardness HRC is 45-50, and is 39-43 higher than the traditional cobalt-nickel alloy coating; the grain size is 11-12, and is finer than the traditional plasma spray-welding coating of 9-10 and the flame surfacing welding layer of 8-9, which is favorable for the comprehensive mechanical property correspondingly; the combined bandwidth of the coating and the base body is 25-40 mum ...

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Номер записи: 9
20-01-2010 дата публикации

Nickel chromium alloy for sealing face of nuclear power valve

Номер: CN0101629256A
Автор: FU GEYAN, SHI SHIHONG, LIU XIUBO, ZHANG ZONGLIE, LU JIANDONG, WEI HONGPU, LIU SHUANG, GEYAN FU, SHIHONG SHI, XIUBO LIU, ZONGLIE ZHANG, JIANDONG LU, HONGPU WEI, SHUANG LIU
Принадлежит:

The invention discloses a nickel chromium alloy for a sealing face of a nuclear power valve. The nickel chromium alloy comprises the following components in percentage by weight: 26.0-28.0 percent of chrome, 2.0-2.5 percent of silicon, 1.1-1.3 percent of boron, 4.5-5.5 percent of molybdenum, 3.0-4.0 percent of tungsten, 0.9-1.1 percent of carbon and the balance of nickel. Meanwhile, a coating layer is prepared by a laser cladding technology so as to obtain a sealing face coating layer of a nickel-based alloy nuclear power valve, which has the following relevant parameters: the rigidity is HRC 42-46 which is slightly higher than HRC39-43 of a Stellite-6 cobalt-based alloy coating layer; the tissue grain fineness number of the coating layer is 11-12 grades which is superior to 9-10 grades of a general plasma jet welding layer and 8-9 grades of a flame resurfacing welding layer; and the width of a combination band of the coating layer and a basal body is 10-30 micrometers which is superior ...

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Номер записи: 10