HIGH-VOLTAGE CIRCUIT BREAKER WITH IMPROVED ROBUSTNESS

    公开(公告)号:WO2018158440A1

    公开(公告)日:2018-09-07

    申请号:PCT/EP2018/055202

    申请日:2018-03-02

    Applicant: ABB SCHWEIZ AG

    Abstract: An interrupter unit (1) for gas blast circuit breakers has a central axis A and comprises a first contact portion (10) with arcing contact (12), a second contact portion (20) comprising a cylinder shaft (22) and a pin contact (25), an insulating nozzle (30) fixed to the first contact portion (10) and having a first section (32) surrounding the arcing contact (12), an intermediate cylindrical section (34) and a divergent section (36). A heating channel (40) with circumferential opening (42) leading into the nozzle (30) guides compressed gas into an arcing zone (50) during opening operation of the interrupter unit (1). At the circumferential opening (42) of the heating channel (40), a circumferential edge region (46) between a first side wall (60) of the heating channel (40) and a wall of the cylindrical nozzle section (34) comprises at least one edge (47) with an enveloping radius of at most 2 mm.

    GAS-INSULATED HIGH-VOLTAGE SWITCHING DEVICE WITH IMPROVED MAIN NOZZLE
    2.
    发明申请
    GAS-INSULATED HIGH-VOLTAGE SWITCHING DEVICE WITH IMPROVED MAIN NOZZLE 审中-公开
    具有改进的主喷嘴的气体绝缘高压开关装置

    公开(公告)号:WO2018015436A1

    公开(公告)日:2018-01-25

    申请号:PCT/EP2017/068229

    申请日:2017-07-19

    Applicant: ABB SCHWEIZ AG

    Abstract: A gas-insulated high-voltage switching device (1) is provided, which includes an arcing contact arrangement (5) having a first arcing zone member (30) and a second arcing zone member (20) that are movable relative to one another along an axis (B). An auxiliary nozzle (40) surrounds at least a part of a second arcing contact unit (21) and has an auxiliary nozzle throat (42) having an axial extension and allowing passage at least of an end of the first arcing contact unit (31). A main nozzle throat (52) has an axial extension sideways of the auxiliary nozzle throat (42) and allows passage at least of the end of the first arcing contact unit (31). A cross-sectional area of the main nozzle throat (52) is substantially decreasing in the direction away from the auxiliary nozzle throat (42) so as to form a substantially converging duct for the flow of an arc-extinguishing gas.

    Abstract translation: 提供了一种气体绝缘的高压开关装置(1),其包括具有第一电弧区构件(30)和第二电弧区构件(20)的电弧触点装置(5) 它们可以沿轴线(B)相对于彼此移动。 辅助喷嘴(40)围绕第二电弧触点单元(21)的至少一部分并具有辅助喷嘴喉部(42),该辅助喷嘴喉部具有轴向延伸并且允许第一电弧触点单元(31)的至少一端通过, 。 主喷嘴喉部(52)具有辅助喷嘴喉部(42)侧向的轴向延伸部并且允许至少第一电弧接触单元(31)的端部通过。 主喷嘴喉部(52)的横截面面积在远离辅助喷嘴喉部(42)的方向上基本上减小,从而形成用于灭弧气体流动的基本上会聚的管道。

    GAS-INSULATED LOW- OR MEDIUM-VOLTAGE LOAD BREAK SWITCH
    3.
    发明申请
    GAS-INSULATED LOW- OR MEDIUM-VOLTAGE LOAD BREAK SWITCH 审中-公开
    气体绝缘的低压或中压负载开关

    公开(公告)号:WO2017207763A1

    公开(公告)日:2017-12-07

    申请号:PCT/EP2017/063474

    申请日:2017-06-02

    Applicant: ABB SCHWEIZ AG

    Abstract: A gas-insulated low- or medium-voltage load break switch (1) comprises: a housing (2) defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact (10) and a second arcing contact (20) arranged within the housing volume, the first and second arcing contacts (10, 20) being movable in relation to each other along an axis (12) of the load break switch (1) and defining a quenching region (52) in which an arc (50) is formed during a current breaking operation; a pressurizing system (40) having a pressurizing chamber (42) arranged within the housing volume for pressurizing a quenching gas from an ambient pressure p 0 to a quenching pressure p quench during the current breaking operation; and a nozzle system (30) arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber (42) onto the arc (50) formed in the quenching region (52) during the current breaking operation. The nozzle system (30) comprises at least one nozzle (33) arranged for blowing the quenching gas from an off-axis position predominantly radially inwardly onto the quenching region (52).

    Abstract translation: 气体绝缘的低压或中压负载断路开关(1)包括:壳体(2),其限定用于将绝缘气体保持在环境压力下的壳体容积; ,布置在所述壳体容积内的第一电弧触头(10)和第二电弧触头(20),所述第一电弧触头和所述第二电弧触头(10,20)可沿着所述负载断路开关的轴线(12)相对于彼此移动, (1)并且限定在电流断开操作期间形成电弧(50)的淬火区域(52);其中, 加压系统(40),其具有布置在壳体容积​​内的加压室(42),用于将骤冷气体从环境压力p 0加压至骤冷压力p quench / i> 在当前的中断操作过程中; 以及布置在壳体容积​​内的喷嘴系统(30),用于在电流切断操作期间以亚音速流动模式将加压淬火气体从加压室(42)吹到形成在淬火区域(52)中的电弧(50)上。 喷嘴系统(30)包括至少一个喷嘴(33),该喷嘴布置成用于将淬火气体主要径向向内从离轴位置吹向淬火区域(52)。

    GAS-INSULATED LOAD BREAK SWITCH AND SWITCHGEAR COMPRISING A GAS-INSULATED LOAD BREAK SWITCH

    公开(公告)号:WO2019001946A1

    公开(公告)日:2019-01-03

    申请号:PCT/EP2018/065480

    申请日:2018-06-12

    Applicant: ABB SCHWEIZ AG

    Abstract: The disclosure relates to a gas-insulated load break switch(1) and a gas-insulated switchgear (100) comprising a gas-insulated load break switch (1). The gas-insulated load-break switch (1) has a housing (2) defining a housing volume for holding an insulation gas at an ambient pressure;a first main contact (80)and a second main contact (90), the first and second main contacts (80, 90) being movable in relation to each other in the axial direction (A) of the load break switch (1);a first arcing contact (10) and a second arcing contact (20), the first and secondarcing contacts (10, 20) being movable in relation to each other in an axial direction (A) of the load break switch (1) and defining an arcing region in which an arc is formed during a current breaking operation, wherein the arcing region is located, at least partially, radially inward from the first main contact;a pressurizing system (40) having a pressurizing chamber (42) for pressurizing a quenching gas during the current breaking operation;and a nozzle system (30) arranged and configured to blow the pressurized quenching gas onto the arc formed in the quenching region during the current breaking operation, the nozzle system (30) having a nozzle supply channel for supplying at least one nozzle (33) with the pressurized quenching gas. The first main contact (80) comprises at least one pressure release opening (85) formed such as to allow a flow of gas substantially in a radial outward direction, wherein the total area of the at least one pressure release opening (85) is configured such that during a supply of the pressurized quenching gas, a reduction of the flow of gas out of the pressure release opening (85) is suppressed.

    GAS-INSULATED HIGH-VOLTAGE SWITCHING DEVICE WITH IMPROVED MAIN NOZZLE

    公开(公告)号:EP3488458A1

    公开(公告)日:2019-05-29

    申请号:EP17743312.5

    申请日:2017-07-19

    Applicant: ABB Schweiz AG

    Abstract: A gas-insulated high-voltage switching device which includes an arcing contact arrangement having a first arcing zone member and a second arcing zone member that are movable relative to one another along an axis. An auxiliary nozzle surrounds at least a part of a second arcing contact unit and has an auxiliary nozzle throat having an axial extension and allowing passage at least of an end of the first arcing contact unit. A main nozzle throat has an axial extension sideways of the auxiliary nozzle throat and allows passage at least of the end of the first arcing contact unit. A cross-sectional area of the main nozzle throat is substantially decreasing in the direction away from the auxiliary nozzle throat so as to form a substantially converging duct for the flow of an arc-extinguishing gas.

    GAS-INSULATED LOAD BREAK SWITCH AND SWITCHGEAR COMPRISING A GAS-INSULATED LOAD BREAK SWITCH

    公开(公告)号:EP3422381A1

    公开(公告)日:2019-01-02

    申请号:EP17178561.1

    申请日:2017-06-29

    Applicant: ABB Schweiz AG

    Abstract: The disclosure relates to a gas-insulated load break switch (1) and a gas-insulated switchgear (100) comprising a gas-insulated load break switch (1).
    The gas-insulated load-break switch (1) has a housing (2) defining a housing volume for holding an insulation gas at an ambient pressure; a first main contact (80) and a second main contact (90), the first and second main contacts (80, 90) being movable in relation to each other in the axial direction (A) of the load break switch (1); a first arcing contact (10) and a second arcing contact (20), the first and second arcing contacts (10, 20) being movable in relation to each other in an axial direction (A) of the load break switch (1) and defining an arcing region in which an arc is formed during a current breaking operation, wherein the arcing region is located, at least partially, radially inward from the first main contact; a pressurizing system (40) having a pressurizing chamber (42) for pressurizing a quenching gas during the current breaking operation; and a nozzle system (30) arranged and configured to blow the pressurized quenching gas onto the arc formed in the quenching region during the current breaking operation, the nozzle system (30) having a nozzle supply channel for supplying at least one nozzle (33) with the pressurized quenching gas.
    The first main contact (80) comprises at least one pressure release opening (85) formed such as to allow a flow of gas substantially in a radial outward direction, wherein the total area of the at least one pressure release opening (85) is configured such that during a supply of the pressurized quenching gas, a reduction of the flow of gas out of the pressure release opening (85) is suppressed.

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