110kV CT126-1 Circuit Breaker Spring Operating Mechanism 110kV CT126-1 Circuit Breaker Spring Operating Mechanism

Dinamika gbanja na 110kV CT126-1 shine "gbanja na abinci" na mafi girma a jikohi mai girma. An yi tsohon kayan aiki a matsayin muhimmin kayan aiki, da "girman iya amfani da zama, da inganci, da kuma gaskeza" domin cin bayanai. Daga fadada aiki da rarrabe energy, yana daidaita wajen kula da sauki da karamin dinamika gbanja, kuma ana amfani da shi da dama a cikin substation 110kV, hanyoyi na rarrabe masu karfi, da kuma tattalin arziki mai girma don tabbatar da zama ko karamin tsakanin na hanyoyi mai girma. ​
1、 Tsohon Bayanai: Gargajiya Energy da Rarrabe a Farkon Masu Girma
1. Fadada dual spring energy storage system
Wannan matsayin amsa da take da aiki a dinamika gbanja 110kV (power na karamin aiki ≥ 450J), an yi design da dual spring combination "main closing spring+auxiliary energy storage spring":
Main spring: Yana da damar 28mm da 60Si2MnA high-strength alloy spring steel, quenched a 1050 ℃ da tempered a 450 ℃, tensile strength ya haɗa 2100MPa, da kuma yake da iya kula 520J energy a maximum deformation da 35mm, yana ba da core power don karamin aiki; ​
Auxiliary spring: Yana da damar 12mm 50CrVA spring steel, compressed synchronously with the main spring to assist in load sharing, reduce fatigue loss of the main spring, and extend the overall spring component life (≥ 15000 energy storage cycles). ​
Yanayin energy storage yana da dual modes "electric+manual" da yake daidaita wajen aiki a wurin emergency
Electric energy storage: Ana fito da 2.2kW three-phase asynchronous motor (AC380V, speed 1450r/min), shaft na energy storage yana daidaita wajen zuwa don rotation through three-stage helical gear reduction (reduction ratio 1:150), da kuma cam mechanism yana push spring don compress. Ba da wannan energy storage an yi mechanical lock by the double pawl, and the travel switch triggers the motor to cut off power. The whole process takes ≤ 25s
Manual energy storage: A wurin emergency, insert a Z-shaped extended rocker handle (650mm in length, designed with a labor-saving lever). When the rocker handle rotates at 20r/min, energy storage can be completed within ≤ 60 turns, meeting the emergency operation needs during power outages

2. Coordination of high-voltage opening and closing actions
The transmission connection between the mechanism and CT126-1 circuit breaker has been precisely calibrated to ensure precise operation in high-voltage scenarios
Closing process: After receiving the closing signal, the DC220V closing electromagnet (suction force ≥ 90N) pushes the release pin, and the double claws are synchronously released. The main spring instantly releases energy, and the main shaft of the circuit breaker is driven to rotate through the chrome molybdenum steel transmission connecting rod (φ 20mm, yield strength ≥ 800MPa), and the moving contact quickly closes. The closing time is ≤ 80ms, ensuring the rapid restoration of power supply to the 110kV line; At the same time, the opening spring synchronously stretches and stores energy, and the pre tightening force can be fine tuned within the range of 50-80N by adjusting the nut, adapting to the opening speed requirements of different arc extinguishing chambers. ​
Opening process: When the system detects faults such as short circuit (short circuit current ≤ 40kA), overload, etc., the opening electromagnet (or manual opening handle) will act, the opening lock will release, the opening spring will release energy, and the transmission mechanism will drive the moving contact to open. The opening time is ≤ 30ms, and it will cooperate with the arc extinguishing chamber of the circuit breaker to quickly cut off the high-voltage arc, avoiding the expansion of the fault. The opening rebound amount is ≤ 2mm, which meets the requirements of GB/T 1984-2014 "High Voltage AC Circuit Breaker" standard.