Patents Assigned to NR ELECTRIC POWER ELECTRONICS CO., LTD.
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Patent number: 10636548Abstract: A housing structure of a planar resistor is provided, wherein electrode extraction ends of the planar resistor are on the same side of the resistor. A housing structure body is made of an insulating material covering the surface of the resistor. An insulating structure having a groove opening facing toward or away from the resistor is provided around each electrode extraction end of the resistor. The insulating structure is configured to be a multi-tooth or multi-groove insulating structure.Type: GrantFiled: September 5, 2017Date of Patent: April 28, 2020Assignees: NR ENGINEERING CO., LTD, NR ELECTRIC CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTDInventors: Xiang Zhang, Chihan Chen, Zhao Li, Ge Song, Li Zheng, Fan Yang
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Patent number: 10632578Abstract: An assembly method for a DC converter valve includes: assembling a top shielding case: lifting the top shielding case to a designated height via a lifting platform, and then fixedly connecting the top shielding case to lower ends of insulators, fixedly connecting upper ends of the insulators to a truss, the truss being located on the top of a valve hall; assembling valve layers: lifting the valve layers to designated locations in a sequence from top to bottom via the lifting platform; and assembling a bottom shielding case: lifting the bottom shielding case to a designated height via the lifting platform, connecting the bottom shielding case to a lowermost valve layer and suspending the bottom shielding case below the lowermost valve layer via suspension insulators. By means of the present invention, the operation is convenient, a small quantity of devices is used, and the security and reliability are high.Type: GrantFiled: July 13, 2016Date of Patent: April 28, 2020Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang Zhang, Fan Yang, Guoxing Bai, Zhao Li, Liang Liu, Xiaodong Shi
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Patent number: 10381138Abstract: Disclosed are a resistor, a heat dissipater and a combinatory device of the resistor and the heat dissipater, and relates to the field of power electronics. The resistor is cylindrical, and comprises a metal end, an insulating part, a casing, metal bars, a resistor wire, thermally conductive insulating fillers and a metal connection mechanism. The metal connection mechanism of the resistor and the heat dissipater are connected by means of direct contact. The structure and the connection method can shorten the length of the resistor, completely insulate the electrical circuits of the resistor from the possible leakage of the water inlet- and outlet-pipe of the heat dissipater, and enable the combinatory device of the resistor and the heat dissipater to be structurally more compact and the connections thereof cleaner.Type: GrantFiled: September 29, 2015Date of Patent: August 13, 2019Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Taixun Fang, Xiang Zhang, Lei Liu, Zhao Li, Guangtai Zhang, Fengfeng Ding, Huiliang Zhang
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Patent number: 10141243Abstract: A thyristor assembly radiator for a DC converter valve. A water discharging port of an Nth radiator is communicated with a water discharging port of an (N?2)th radiator. A water feeding port of the Nth radiator is communicated with a water feeding port of an (N+2)th radiator. Or, a water feeding port of the Nth radiator is communicated with a water feeding port of the (N?2)th radiator, and a water discharging port of the Nth radiator is communicated with a water discharging port of the (N+2)th radiator. A water discharging port of an Mth radiator is communicated with a water discharging port of an (M?2)th radiator, and a water feeding port of the Mth radiator is communicated with a water feeding port of an (M+2)th radiator, or a water feeding port of an Mth radiator is communicated with a water feeding port of the (M?2)th radiator, and a water discharging port of the Mth radiator is communicated with a water discharging port of an (M+2)th radiator.Type: GrantFiled: July 13, 2016Date of Patent: November 27, 2018Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang Zhang, Taixun Fang, Dongming Cao, Chihan Chen, Guangtai Zhang, Haibin Liu
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Patent number: 10122292Abstract: A converter valve includes a top shielding cover, a bottom shielding cover, at least two vertically stacked valve layers, and a maintenance platform. The top shielding cover is disposed at an upper portion of an uppermost valve layer. The bottom shielding cover is disposed at a lower portion of a lowermost valve layer. Each of the valve layers comprises two valve modules disposed side-by-side in a horizontal direction. The two valve modules are electrically connected via a busbar and mechanically connected via securing connectors. A lower valve layer is connected to an upper valve layer in a suspended manner. A body of the maintenance platform is located between horizontal planes on which two vertically adjacent valve layers are located, or between horizontal planes on which the lowermost valve layer and the bottom shielding cover are located.Type: GrantFiled: July 13, 2016Date of Patent: November 6, 2018Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang Zhang, Lei Liu, Taixun Fang, Chihan Chen, Zhao Li, Haiying Li, Fengfeng Ding
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Publication number: 20180302993Abstract: A shell structure for a thyristor trigger unit comprises an integrally-formed shell body with a holder and a cuboid structure, and a side plate. The cuboid structure is a cuboid with an opening in its front where an open face is formed at the front opening of the cuboid. The cuboid further includes a rear panel, a left panel, a right panel, an upper panel, and a lower panel. The holder includes a square retaining plate and two triangular stiffener plates. The square retaining plate is formed by a bottom panel extending towards a side of the left panel in a long side direction of the cuboid while the triangular stiffener plates are fixedly connected between the square retaining plate and the left panel. The side plate is mated with and detachably mounted on the open face to produce a sealed 6-face cuboid structure by sealing off said open face.Type: ApplicationFiled: July 13, 2016Publication date: October 18, 2018Applicants: NR Electric Co., Ltd, NR Engineering Co., Ltd, NR Electric Power Electronics Co., Ltd.Inventors: Chihan CHEN, Taixun FANG, Fan YANG, Biao GAO, Lele LI, Lei LIU
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Publication number: 20180262120Abstract: A converter valve includes a top shielding cover, a bottom shielding cover, at least two vertically stacked valve layers, and a maintenance platform. The top shielding cover is disposed at an upper portion of an uppermost valve layer. The bottom shielding cover is disposed at a lower portion of a lowermost valve layer. Each of the valve layers comprises two valve modules disposed side-by-side in a horizontal direction. The two valve modules are electrically connected via a busbar and mechanically connected via securing connectors. A lower valve layer is connected to an upper valve layer in a suspended manner. A body of the maintenance platform is located between horizontal planes on which two vertically adjacent valve layers are located, or between horizontal planes on which the lowermost valve layer and the bottom shielding cover are located.Type: ApplicationFiled: July 13, 2016Publication date: September 13, 2018Applicants: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang ZHANG, Lei LIU, Taixun FANG, Chihan CHEN, Zhao LI, Haiying LI, Fengfeng DING
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Publication number: 20180214997Abstract: An assembly method for a DC converter valve includes: assembling a top shielding case: lifting the top shielding case to a designated height via a lifting platform, and then fixedly connecting the top shielding case to lower ends of insulators, fixedly connecting upper ends of the insulators to a truss, the truss being located on the top of a valve hall; assembling valve layers: lifting the valve layers to designated locations in a sequence from top to bottom via the lifting platform; and assembling a bottom shielding case: lifting the bottom shielding case to a designated height via the lifting platform, connecting the bottom shielding case to a lowermost valve layer and suspending the bottom shielding case below the lowermost valve layer via suspension insulators. By means of the present invention, the operation is convenient, a small quantity of devices is used, and the security and reliability are high.Type: ApplicationFiled: July 13, 2016Publication date: August 2, 2018Applicants: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang ZHANG, Fan YANG, Guoxing BAI, Zhao LI, Liang LIU, Xiaodong SHI
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Publication number: 20180218965Abstract: A thyristor assembly radiator for a DC converter valve. A water discharging port of an Nth radiator is communicated with a water discharging port of an (N?2)th radiator. A water feeding port of the Nth radiator is communicated with a water feeding port of an (N+2)th radiator. Or, a water feeding port of the Nth radiator is communicated with a water feeding port of the (N?2)th radiator, and a water discharging port of the Nth radiator is communicated with a water discharging port of the (N+2)th radiator. A water discharging port of an Mth radiator is communicated with a water discharging port of an (M?2)th radiator, and a water feeding port of the Mth radiator is communicated with a water feeding port of an (M+2)th radiator, or a water feeding port of an Mth radiator is communicated with a water feeding port of the (M?2)th radiator, and a water discharging port of the Mth radiator is communicated with a water discharging port of an (M+2)th radiator.Type: ApplicationFiled: July 13, 2016Publication date: August 2, 2018Applicants: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Xiang ZHANG, Taixun FANG, Dongming CAO, Chihan CHEN, Guangtai ZHANG, Haibin LIU
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Publication number: 20170278599Abstract: Disclosed are a resistor, a heat dissipater and a combinatory device of the resistor and the heat dissipater, and relates to the field of power electronics. The resistor is cylindrical, and comprises a metal end, an insulating part, a casing, metal bars, a resistor wire, thermally conductive insulating fillers and a metal connection mechanism. The metal connection mechanism of the resistor and the heat dissipater are connected by means of direct contact. The structure and the connection method can shorten the length of the resistor, completely insulate the electrical circuits of the resistor from the possible leakage of the water inlet- and outlet-pipe of the heat dissipater, and enable the combinatory device of the resistor and the heat dissipater to be structurally more compact and the connections thereof cleaner.Type: ApplicationFiled: September 29, 2015Publication date: September 28, 2017Applicants: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD, NR ELECTRIC POWER ELECTRONICS CO., LTD.Inventors: Taixun FANG, Xiang ZHANG, Lei LIU, Zhao LI, Guangtai ZHANG, Fengfeng DING, Huiliang ZHANG