摘要:
Circuit breaker (1) insulated by a dielectric fluid which comprises a first pair of contacts (10, 20), which can move in translation with respect to one another, an arc extinction chamber (30), a compression chamber (40) suitable for propelling a part of the dielectric fluid by piston effect into the extinction chamber (30). The circuit breaker (1) is adapted so that the dielectric fluid propelled by the compression chamber (40) is introduced into the extinction chamber (30) through an end of the first contact (10). According to one possibility of the invention, the extinction chamber is surrounded by a fixed thermal chamber perforated with orifices and thus ensuring blasting as close as possible to the arc contacts.
摘要:
A contact arrangement has a longitudinal axis (z) and comprises at least a first contact (4a) and at least a second contact (4b) interacting electrically and mechanically with each other for closing and opening the contact arrangement. The first contact (4a) is surrounded by a protecting cover element (2) in such a way that a contacting extremity of the first contact (4a) protrudes beyond the cover element (2). The first contact (4a) and the cover element (2) are arranged with respect to one another in such a way that a gap (7) is provided between them along at least a portion of their elongation, wherein the gap (7) has a first opening (10) towards a first volume (15) surrounding the first contact (4a). The cover element (2) comprises at least one chamber (9) connected at least to the gap (2).
摘要:
A particulate and pressure redirection barrier for an electrical breaker as well as a breaker embodying such a barrier. Such a barrier includes first through fifth segments, where the first segment includes a first and second side section and a bottom section that are coupled to each other so as to form a generally U shaped structure. The second segment is coupled to the first side section so it extends outwardly at an angle from the first side section. The third segment is coupled to the second side section so as to extend outwardly and at an angle from the second side section. The fourth segment is coupled to the second segment so as to extend outwardly from and at an angle with respect to the second segment. The fifth segment is coupled to the third segment so as to extend outwardly from and at an angle with respect to the third segment. Such a configuration of the fourth and fifth segments is such that gas flowing along a surface of the second or third segments is redirected at an angle with respect to that surface.
摘要:
The electrical apparatus is located in a metal container filled with pressurized dielectric gas and comprises: an electrical conductor (1) with a longitudinal axis (X), the conductor being intended to hold a voltage and being placed inside the container (6); and two corona-shield caps (10, 12) partially surrounding the conductor (1), at least one of the corona-shield caps (10) comprising a hollow, electrically conductive body (14) having a longitudinal axis substantially coaxial with the axis of the case (6), said body (14) comprising an annular depression (22) in its external surface and holes (26) passing through said body (14), the holes being produced in the bottom of said depression. The holes (26) ensure that the dielectric gas can circulate between a zone internal to and a zone external to the corona-shield cap (10) by convective exchange.
摘要:
L'invention concerne un procédé d'évacuation de gaz chauds issus d'une coupure d'un disjoncteur (1) haute tension comprenant une cuve métallique (2) remplie de gaz isolant, une enveloppe (3) comprenant des ouvertures (30) de sortie de gaz et agencée à l'intérieur de la cuve métallique (2) en communiquant avec les ouvertures, caractérisé en ce qu' on aspire du gaz isolant (GI) depuis l'intérieur de l'enveloppe (3), parallèlement à la totalité de flux de gaz chauds (GC) issus de la coupure, de sorte à les mélanger à l'intérieur de l'enveloppe (3) avant leur évacuation par les ouvertures (30) de sortie de gaz de l'enveloppe vers l'intérieur de la cuve métallique (2). L'invention concerne également un disjoncteur haute tension associé, qui comprend des moyens d'aspiration (5) de gaz isolant depuis l'intérieur de l'enveloppe (3), parallèlement à la totalité de flux de gaz chauds.
摘要:
The invention relates to an electrical switchgear (1), especially a generator switch (1), and a method for improved switching gas cooling. According to the invention, gas jets (12) are formed by a nozzle body (10) in the exhaust region (7), said gas jets are directed towards a deflector (14, 140), and are then subjected to turbulence. Said deflector forms part of the switching chamber housing (3) and has a high heat capacity and/or heat conductivity, such that the switching gas is cooled in a highly efficient manner by turbulent convection of the switching gas turbulence (13) on the deflector (14, 140). Forms of embodiment include the shape of the deflector (14, 140) and the nozzle body (10). The invention is advantageous, inter alia, in that the switching chamber housing (3) is protected from hot gases, the cooling of the switching gas is improved, and the switching capacity is increased.