摘要:
The present disclosure relates to a circuit breaker of a gas-insulated switchgear, and more particularly, to a self-blast circuit breaker of a gas-insulated switchgear, which reuses arc heat. A self-blast circuit breaker having a heat expansion chamber and a puffer chamber includes auxiliary intake valves which introduce a hot gas exhausted through an inside of an actuating rod, into the heat expansion chamber.
摘要:
A pair of fixed arc electrodes (30a), (30b) are arranged facing each other within a sealed container that is filled with arc-extinguishing gas 1. There are provided: a compression puffer chamber (12) for accumulating pressurized gas (35) that is obtained by elevating the pressure of the arc-extinguishing gas (1); and an insulated nozzle (32) that directs the pressurized gas (35) towards the arc discharge (7) from the compression puffer chamber (12). A buffer chamber (36) is provided, in which hot exhaust gas (20) generated by the heat of the arc discharge (7) is temporarily accumulated. A pressurized gas through-flow space (43) is provided, communicating with the compression puffer chamber (12) . In the pressurized gas through-flow space (43), an opening/closing section (41) prevents inflow of hot exhaust gas (20) by assuming a closed condition during the earlier half of the current interruption period, and in the latter half of the current interruption period the opening/closing section 41 is opened to allow flow of pressurized gas (35).
摘要:
The invention relates to an isolating switch comprising: a fixed arc contact (20) and a mobile arc contact (22); an isolating nozzle (24) enveloping a part of a first arc contact (20) in such a way that, when the electric arc is formed during a manoeuvre for opening or closing the isolating switch, the isolating nozzle (24) is in contact with the electric arc and undergoes an ablation by the electric arc; and a screen (25) which is mounted on the second arc contact (22), an isolating tip (25b) of the screen (25) being mounted against an end (22a) of the second arc contact (22), which is located on the side of the first arc contact, the isolating tip (25b) being arranged so as to be in contact with the electric arc and to increase the length thereof.
摘要:
The invention relates to a switchgear arrangement with a switch path (2), comprising an insulating material nozzle (7). The insulating material nozzle (7) at least partly encloses the switch path (2). A nozzle channel (8) for the insulating material nozzle (7) opens with a outlet opening (13) in a hot gas space (10). A deflector element (15a, 15b, 15c) is arranged within the hot gas space (10) which defines a deflector channel (14a, 14b, 14c). The deflector channel (14a, 14b, 14c) comprises a section which has an expanding cross-section in the stream direction of a switching gas in the hot gas space (10).
摘要:
A switching device assembly comprising a contact gap (6) comprises a nozzle (7) made of insulating material. The nozzle (7) made of insulating material comprises a nozzle channel (8) that ends in a heating gas volume (10). Within the heating gas volume (10), a deflector element (14a, 14b) is arranged, which is supported inside the deflector channel (15a, 15b).
摘要:
Large-diameter part 16 is formed at the axial-middle part of rotary shaft 15 that rotates driven by operating device. Insulated operating rod 14, the distal end of which makes move in the form of a segment of a circle effected by the rotation of rotary shaft 15, is formed integrally using filler-filled resin over large-diameter part 16 of rotary shaft 15 by cast so that the large-diameter part 15 is embedded into one end of insulated operating rod 14. The contact and connection between insulated operating rod 14 and moving rod 13 is given such sliding surface 21 as is formed for example in an elliptical shape so that the contact occur always at almost one-point on the axis line of the moving rod 13.
摘要:
Der Leistungsschalter enthält einen isoliergasgefüllten Behälter (K) und eine im Behälter (K) angeordnete, längs einer Achse (X) ausgerichtete und mit Hochspannung beaufschlagbare Schalteinheit (E) mit einer Löschkammer (20) und einem Auspuffvolumen (30). Das Auspuffvolumen (30) ist über einen Gaseinlass (22) mit einer beim Ausschalten in der Löschkammer (20) sich bildenden Lichtbogenzone (27) verbunden und kommuniziert über einen im Gehäuse (10) angeordneten Gasauslass (36) mit dem Inneren des Behälters (K). Das Auspuffvolumen weist eine ringförmig um die Achse (X) geführte Kammer (32) auf, in der aus der Lichtbogenzone (27) zuströmendes Heissgas (S1) durch Rezirkulation mit kühlem Isoliergas vermischt wird. Um das Heissgas besonders wirkungsvoll zu kühlen und um so die Schaltleistung zu verbessern, ist die Mischkammer (32) nach Art eines Hohlzylinders ausgebildet und weist zwei kreisringförmige Stirnseiten (3, 3') auf, ist eine vom Heissgas angeströmte beider Stirnseiten (3) von zwei axial gegeneinander versetzt angeordneten Platten gebildet, und ist zwischen den beiden Platten ein radial ausgerichteter Ringspalt angeordnet, durch den das zugeführte Heissgas (S1) überwiegend in radialer Richtung ins Innere der Mischkammer (32) strömt.
摘要:
An interrupter unit (1) for a high-voltage power switch supported by a supporting element (5, 6) radially surrounding the interrupter element (1) and consisting of two sections (5a, 5b, 6a, 6b) . The second section (5b, 6b) is radially enlarged in relation to the first section (5a,6a). A discharge opening (10,11) for a quenching gas arising during a switching process is disposed between the two sections (5a, 5b, 6a, 6b)
摘要:
The invention relates to a compressed gas power switch having a first actuatable electric arc contact (2), a second stationary electric arc contact (3), a rated current pathway (4) and a compression device (9). At least the first actuatable electric arc contact (2) is supported by a switching tube. The discharge volume (16) at the exit (15) of the switching tube (16) is connected to the low pressure chamber (18) by blow-out openings (17) and is separated from a suction area (23) by a wall (26).