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- 00:00:00,000 --> 00:00:05,586
- GW4A型220千伏隔离刀闸是采用双柱水平旋转式结构
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- 00:00:05,586 --> 00:00:08,901
- 其三个系统作为隔离和切换三相线路
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- 00:00:08,901 --> 00:00:10,541
- 进出线位于两端
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- 00:00:10,541 --> 00:00:12,840
- 其明显断开点和接地系统
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- 00:00:12,840 --> 00:00:15,675
- 确保了电路的安全连接和断开
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- 00:00:15,675 --> 00:00:19,830
- 主要由底架、支柱绝缘子及导电系统等三部分组成
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- 00:00:19,840 --> 00:00:22,600
- 采用三级一体式同步操作结构
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- 00:00:22,600 --> 00:00:24,875
- 使得它采用单头接地系统
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- 00:00:24,875 --> 00:00:26,620
- 也可升级为双接地系统
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- 00:00:27,134 --> 00:00:30,374
- 其操作系统是将电能转换成机械能
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- 00:00:30,374 --> 00:00:33,680
- 通过机械连杆将机械能传递到执行机构
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- 00:00:33,680 --> 00:00:36,160
- 我们假设现在线路已接通
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- 00:00:36,161 --> 00:00:37,266
- 电机运转
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- 00:00:37,266 --> 00:00:39,911
- 经涡轮减速机带动数轴旋转
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- 00:00:39,911 --> 00:00:41,536
- 两个平行杆运动
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- 00:00:41,536 --> 00:00:44,107
- 分别带动各自的旋转瓷瓶旋转
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- 00:00:44,107 --> 00:00:46,477
- 两触头向相反方向运动
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- 00:00:46,477 --> 00:00:48,032
- 直到平行结束
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- 00:00:48,032 --> 00:00:49,832
- 当线路需要检修时
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- 00:00:49,832 --> 00:00:51,497
- 我们可利用接地系统
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- 00:00:51,507 --> 00:00:53,407
- 将线路做可靠接地
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- 00:00:53,407 --> 00:00:56,237
- 接地系统中操作机构的电机旋转
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- 00:00:56,237 --> 00:00:58,014
- 带动涡轮减速机减速
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- 00:00:58,014 --> 00:01:00,094
- 经连杆到达执行机构
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- 00:01:00,094 --> 00:01:02,039
- 动触头做切线运动
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- 00:01:02,039 --> 00:01:03,979
- 和接地静触头插接
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- 00:01:03,979 --> 00:01:05,734
- 实现明显可靠接地
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- 00:01:05,747 --> 00:01:10,094
- 可对线路实现冷储备和检修操作提供安全保证
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- 00:01:10,095 --> 00:01:11,405
- 投入线路时
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- 00:01:11,405 --> 00:01:13,550
- 需先将接地刀闸分闸
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- 00:01:13,550 --> 00:01:15,948
- 然后才能进行隔离刀闸合闸
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- 00:01:15,948 --> 00:01:16,988
- 合闸时
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- 00:01:16,988 --> 00:01:18,613
- 只需将电机反转
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- 00:01:18,613 --> 00:01:20,078
- 通过连杆联动
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- 00:01:20,078 --> 00:01:22,193
- 带动瓷瓶和动触头合拢
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- 00:01:22,201 --> 00:01:25,591
- 触头是靠自身弹簧刀闸能量自行夹紧
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- 00:01:25,591 --> 00:01:29,081
- 避免了目前主流因弹簧加紧中的弹簧锈蚀、
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- 00:01:29,081 --> 00:01:32,015
- 发热退火而引起的触头夹紧力降低
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- 00:01:32,015 --> 00:01:36,441
- 接触电阻增加 触头发热加剧的恶性循环故障
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- 00:01:36,442 --> 00:01:39,387
- 其简单的机械结构和可靠的性能
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- 00:01:39,387 --> 00:01:43,108
- 广泛应用于110到330千伏电力系统
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- 00:01:43,108 --> 00:01:46,188
- 适用于变电站、发电厂等户外场所
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