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公开(公告)号：US11988713B2
公开(公告)日：2024-05-21
申请号：US17640774
申请日：2020-08-26
发明人： Wei Zeng , Min Chang , Xiaobeng Huang , Haiming Liao , Haisheng Jin , Enlin Wang
IPC分类号： G01R31/327 , G01N9/00 , H01H35/24
CPC分类号： G01R31/3274 , G01N9/00 , H01H35/24
摘要： A contact signal acquisition circuit for online checking a gas density relay on site is provided, including a first connecting circuit, connecting a contact of a gas density relay to a contact signal control loop, and a second connecting circuit, connecting a contact of the gas density relay to a contact signal sampling interface of an online check device. In a non-checking state, the second connecting circuit is disconnected, and the first connecting circuit is closed; and in a checking state, the first connecting circuit is disconnected, and the second connecting circuit is connected, so as to connect the contact of the gas density relay to the contact signal sampling interface of the online check device, guaranteeing that no contact action signal is uploaded during checking and safe operation of a power grid is not affected.
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公开(公告)号：US20220317008A1
公开(公告)日：2022-10-06
申请号：US17616034
申请日：2021-03-02
发明人： Libo Luo , Xuejun Zhang , Min Chang , Bing He , Xiaoli Shen , Haiyong Jin
摘要： A high anti-vibration gas density monitor is provided, including a monitor enclosure, a signal control mechanism, and an indication value display mechanism independent from the signal control mechanism which are provided in the monitor enclosure. The signal control mechanism includes at least one corrugated pipe, a sealed compensation chamber, a signal generator, and a signal regulation mechanism. The corrugated pipe is perpendicular to a side wall of a control casing. The monitor enclosure includes an independent sealed compartment used to mount the indication value display mechanism. The sealed compartment is filled with anti-vibration oil, or is hermetically filled with gas. The indication value display mechanism includes a Bourdon tube, a base, an end holder, a movement, a pointer, and a dial.
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公开(公告)号：US12099093B2
公开(公告)日：2024-09-24
申请号：US17776219
申请日：2020-12-09
发明人： Min Chang , Xiaobeng Huang , Tiexin Xia , Zhengcao Guo , Wei Zheng , Haiyong Jing
IPC分类号： G01R31/327 , G01D21/02 , G01N9/26 , H01H35/28
CPC分类号： G01R31/3274 , G01D21/02 , G01N9/266 , H01H35/28
摘要： The present disclosure provides a method for modifying a gas density relay and a gas density relay having an online self-check function and a check method therefor. The gas density relay having an online self-check function is used for high-voltage and medium-voltage electrical devices, and includes a gas density relay body, a gas density detection sensor, a gas path blocking pressure regulation mechanism, an online check contact signal sampling unit and an intelligent control unit. The intelligent control unit controls a blocking member of the gas path blocking pressure regulation mechanism to move, so as to block a gas path between a first interface and a second interface. Moreover, a volume of a sealed cavity changes, a gas pressure of the gas density relay body slowly falls, thereby generating contact action, the contact action is transmitted to the intelligent control unit by means of the online check contact signal sampling unit, and the intelligent control unit detects an alarm and/or blocking contact signal action value and/or return value according to a density value during the contact action, such that check can be completed without maintenance personnel on site, and the reliability and efficiency of a power grid are greatly improved while cost is lowered.
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4.发明授权公开(公告)号：US12038480B2
公开(公告)日：2024-07-16
申请号：US17640776
申请日：2020-08-26
发明人： Tiexin Xia , Bing He , Min Chang , Zhengcao Guo , Haiming Liao , Haiyong Jin , Enlin Wang
IPC分类号： G01R31/327 , G01N9/00 , G01R15/20 , G01R19/00 , H01H35/26
CPC分类号： G01R31/3278 , G01N9/002 , G01R15/202 , G01R19/0092 , H01H35/26 , G01N2009/006
摘要： The application provides an electrical system with online sampling and check function and its check method for high-voltage and medium-voltage electrical equipment, including electrical equipment, gas density relay, gas density sensor, valve, pressure regulating mechanism, online check contact signal sampling unit and intelligent control unit. The pressure is increased or decreased by the pressure regulating mechanism to enable the contact action of the gas density relay of electrical equipment. The contact action is transmitted to the intelligent control unit through the online check contact signal sampling unit. The intelligent control unit detects the alarm and/or blocking contact signal operating value and/or return value according to the density value of the contact action; the check of the gas density relay can be completed without maintenance personnel on site, which greatly improves the reliability of the power grid and the work efficiency, and reduces the O&M cost. At the same time, it also realizes the mutual self-inspection between gas density relay and gas density sensor, and further realizes the maintenance-free.
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5.发明授权公开(公告)号：US12046433B2
公开(公告)日：2024-07-23
申请号：US17640779
申请日：2020-08-26
发明人： Haiyong Jin , Tiexin Xia , Xiaobeng Huang , Zhengcao Guo , Min Chang , Lele Wang
IPC分类号： H01H35/26 , G01N9/26 , G01R31/327 , H01H35/32 , H02B13/065 , H01H35/36
CPC分类号： H01H35/26 , G01N9/26 , G01R31/3271 , H01H35/32 , H02B13/065 , H01H35/36 , H01H2300/052
摘要： The application provides an electrical system with online sampling and check function and its check method for high-voltage and medium-voltage electrical equipment, including electrical equipment, gas density relay, gas density sensor, temperature regulation mechanism, online check contact signal sampling unit and intelligent control unit. The temperature rise and fall of the temperature compensation element of the gas density relay is regulated through the temperature regulation mechanism to enable the contact action of the gas density relay of electrical equipment. The contact action is transmitted to the intelligent control unit through the online check contact signal sampling unit. The intelligent control unit detects the alarm and/or blocking contact signal operating value and/or return value according to the density value of the contact action; the check of the gas density relay can be completed without maintenance personnel on site, which greatly improves the reliability of the power grid and the work efficiency, and reduces the O&M cost. At the same time, it also realizes the mutual self-inspection between gas density relay and gas density sensor, and further realizes the maintenance-free.
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公开(公告)号：US11885827B2
公开(公告)日：2024-01-30
申请号：US17616034
申请日：2021-03-02
发明人： Libo Luo , Xuejun Zhang , Min Chang , Bing He , Xiaoli Shen , Haiyong Jin
CPC分类号： G01N9/266 , H01H35/2657 , H01H35/2671
摘要： A high anti-vibration gas density monitor is provided, including a monitor enclosure, a signal control mechanism, and an indication value display mechanism independent from the signal control mechanism which are provided in the monitor enclosure. The signal control mechanism includes at least one corrugated pipe, a sealed compensation chamber, a signal generator, and a signal regulation mechanism. The corrugated pipe is perpendicular to a side wall of a control casing. The monitor enclosure includes an independent sealed compartment used to mount the indication value display mechanism. The sealed compartment is filled with anti-vibration oil, or is hermetically filled with gas. The indication value display mechanism includes a Bourdon tube, a base, an end holder, a movement, a pointer, and a dial.
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