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发明公开
CN110649547A 一种气体绝缘金属封闭输电线路及其轴向伸缩节 无效 - 驳回

一种气体绝缘金属封闭输电线路及其轴向伸缩节
摘要：
本发明提供了一种气体绝缘金属封闭输电线路及其轴向伸缩节，其中，轴向伸缩节包括同轴顺次连接形成短筒状结构的第一、第二、第三波纹管，短筒状结构相背的两端设有法兰结构以用于分别连接气体绝缘金属封闭输电线路的两管段外筒；还包括由第一拉杆和第二拉杆组成的拉杆组件，第一拉杆滑动穿过第一波纹管和第二波纹管之间的法兰结构，且两端分别固定连接在第一波纹管的法兰结构上及第二波纹管和第三波纹管之间的法兰结构上；第二拉杆滑动穿过第二波纹管和第三波纹管之间的法兰结构，且两端分别固定连接在第一波纹管和第二波纹管之间的法兰结构上及第三波纹管的法兰结构上；轴向伸缩节具有较大的轴向补偿量，还保证在进行伸缩时的具有较好的稳定性。
摘要（英）：

The invention provides a gas-insulated metal-enclosed power transmission line and an axial expansion joint thereof. The axial expansion joint comprises a first corrugated pipe, a second corrugated pipe and a third corrugated pipe which are coaxially and sequentially connected to form a short cylindrical structure, and flange structures are arranged at the two opposite ends of the short cylindricalstructure and used for being connected with two pipe section outer cylinders of the gas-insulated metal-enclosed power transmission line respectively. The axial expansion joint further comprises a pull rod component composed of a first pull rod and a second pull rod, the first pull rod penetrates the flange structure between the first corrugated pipe and the second corrugated pipe in a sliding mode, and the two ends of the first pull rod are fixedly connected to the flange structure of the first corrugated pipe and the flange structure between the second corrugated pipe and the third corrugated pipe respectively; the second pull rod penetrates the flange structure between the second corrugated pipe and the third corrugated pipe in a sliding mode, and the two ends of the second pull rod are fixedly connected to the flange structure between the first corrugated pipe and the second corrugated pipe and the flange structure of the third corrugated pipe respectively. The axial expansion joint has a large axial compensation amount, and good stability during expansion and contraction is guaranteed.

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