Screw type arc extinguishing mechanism of power circuit breaker
A circuit breaker, screw-type technology, applied in the field of screw-type arc extinguishing mechanism, can solve the problems of circuit disconnection delay, power circuit breaker shell damage, ablation, etc.
Inactive Publication Date: 2019-01-01
嘉控电力股份有限公司
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Problems solved by technology
[0002] At present, the existing power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. During the process of making or closing, a high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be drawn out quickly and extinguished, it will ablate the contact point between the two contacts, and damage the power circuit breaker. The shell causes great damage, and more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; the arc extinguishing mechanism is very important for the power short circuit
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[0024] Such as figure 1 , 2 , 3, it includes fixed end 1, U-shaped lug 2, switch block 3, first fixed plate 4, first belt 5, second pulley 38, first pulley 7, first gear 8, third pulley 9. Second fixed plate 10, third fixed plate 11, double bevel gear 12, screw rod 13, first bevel gear 14, arc strike plate 15, third bevel gear 16, second bevel gear 17, first fixed shaft 18. Second fixed shaft 19, fourth fixed plate 20, third fixed shaft 21, first helical groove 22, second helical groove 23, drive gear 24, fourth fixed shaft 25, return spring 26, limit plate 27. Fifth fixed shaft 28, first T-shaped slot 29, second T-shaped slot 30, cylindrical pin 31, sixth fixed shaft 32, second T-shaped block 33, first T-shaped block 34, seventh fixed shaft 35, the fourth pulley 36, the second gear 37, the second pulley 38, the third gear 39, the first one-way ring 40, the second one-way ring 41, the fourth bevel gear 42, such as image 3 As shown, one end of the U-shaped lug 2 is installe...
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The invention, which belongs to the technical field of circuit breakers, particularly relates to a screw type arc extinguishing mechanism of a power circuit breaker. The screw type arc extinguishing mechanism comprises a fixed end, a U-shaped lug, a switch block, a first fixed plate, a first belt, a second belt pulley, a first belt pulley, a first gear, a third belt pulley, a second fixed plate, athird fixed plate, a double-bevel gear unit, and a screw rod and the like. One end of the U-shaped lug is installed at one side of the upper end surface of the third fixed plate; the switch block isinstalled at the U-shaped lug by cylindrical pin; and a driving gear is installed at the cylindrical pin. A first T-shaped slot and a second T-shaped slot are formed in the end surface of the first fixed plate successively from top to bottom. While the moving screw rod adapts to the arc motion, the arc is segmented into multiple segments and the energy at the arc is absorbed quickly by the screw rod. Since the energy of the arc formed by the circuit breaker is absorbed quickly, the unnecessary accidents are avoided.
Description
technical field [0001] The invention belongs to the technical field of circuit breakers, in particular to a spiral arc extinguishing mechanism of a power circuit breaker. Background technique [0002] At present, the existing power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. During the process of making or closing, a high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be drawn out quickly and extinguished, it will ablate the contact point between the two contacts, and damage the power circuit breaker. The shell causes great damage, and more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; the arc extinguishing mechanism is very important for the power short circuiter. In order to increase the extingui...
Claims
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IPC IPC(8): H01H73/18H01H9/34H01H71/10
Inventor 不公告发明人
Owner 嘉控电力股份有限公司