Keyword: Switch of outdoors high pressure; Breakdown; Reason; Harm; Rectify and reform
The graph classifies date in: TM564.1 document mark piles up: B article number: 1003-0867(2006)12-0025-03
Begin from 1998, for place of report of comfortable meet an emergency nobody are on duty need, bureau of Hangzhou Yu Hang changes in 110kV, 35kV respectively electric place 10kV#1 gives a clue FW □ was installed on lever - bear of 12/630-16 outdoors high pressure (segregation) switch, because quality of #1 bear switch is mixed,maintain an account, run the menace with was caused particular to equipment safety. To resolve the tall hair trouble of switch of #1 lever bear, offer following means of settlements now.
1 main structure and uphold a regulation
1.1 main structures
FW □ - bear of 12/630-16 outdoors high pressure (keep apart) switch, by segregation brake knife is mixed destroy arc room (hold band in the arms by base, installation, advocate brake knife, shunt-wound arc touchs a head, destroy arc room crust) composition, segregation brake knife is touched of shunt-wound arc head and bump piece, bump piece drive destroy arc room cent closes gate, destroy arc is indoor of bedspring fast orgnaization, make sure bear electric current leaves not to suffer operation speed effect.
1.2 uphold a regulation
The to the product insulation level after moving 5 years undertakes checking.
Check to destroying arc room undertakes after full load leaves.
After operation frequency is amounted to 2000 times, answer clutch operation to undertake checking.
2 breakdown place and form
2.1 breakdown place
Bear of outdoors high pressure (keep apart) although switch breakdown place has uncertainty, but brake of the plain bearing liner that the majority produces in main transfer machinery, knife and destroy on arc device, make the orgnaization cannot be operated normally, cause an accident to be sent more, what affect facility directly is normal run the safety with electrified wire netting, person.
2.2 breakdown form
Bear of outdoors high pressure (segregation) switch breakdown form has the following kinds commonly: It is burst of manipulator compose bearing firstly, finger of the switch after causing an operation is dividing the seat, and brake knife is adding up to the position actually to see a picture 1. Because machinery interlinks the breakdown of device,be secondly, create index dividing, and brake knife often reachs the designated position inseparably, cent adds up to an operation to disable, see a picture 2. Because destroy,be thirdly arc room burn down and bring about cent, add up to malfunction, see a picture 3.
Graph 1 switch finger is dividing the seat, brake knife is closing the position
Graph 2 finger are dividing the seat, brake knife is irresolvable
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